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🌀 What Is a Circulator Pump ? A circulator pump  is a specialized type of pump designed to circulate liquids, gases, or slurries within a closed-loop system that has minimal elevation changes. It is commonly used in heating and cooling systems (Hydronic Systems)  to keep hot or chilled water flowing continuously throughout the piping network. Unlike standard water pumps designed to lift water to higher levels, circulator pumps focus on providing high flow rates  to overcome friction losses in the pipes. This design allows them to operate efficiently with lower energy consumption — making them ideal for closed-loop systems in residential and commercial buildings. ⚙️ Structure and Operation of a Circulator Pump Most circulator pumps are small electric centrifugal pumps , especially those used in homes. These pumps are typically sealed units , integrating the impeller, motor, and bearings directly into the water circuit to minimize leakage from the motor shaft. For commercial and industrial applications , circulator pumps are larger and more powerful — often equipped with mechanical couplings to separate the motor from the pump body. Small to medium-sized circulator pumps are usually supported directly by the pipe flanges , while larger pumps are base-mounted  on concrete or metal frames for added stability. 🧱 Pump Materials For closed-loop systems  such as heating or cooling circuits, circulator pumps can be made from cast iron , since the water in the system is deoxygenated or chemically treated to prevent corrosion. However, for domestic water supply systems , where potable water flows continuously, pumps must be made of non-corrosive materials such as bronze or stainless steel  to ensure hygiene, durability, and long service life. 💧 Application in Domestic Hot Water Systems One of the most popular uses of circulator pumps is in domestic hot water systems , where they help deliver instant hot water  to faucets without the long wait. In a typical plumbing system without a circulation pump, cold water remains in the pipes after use, causing delays and water waste when the tap is reopened. A circulator pump continuously moves hot water  from the water heater through the pipes and back, ensuring that hot water is always available. Although this adds slight energy consumption from the pump’s operation, it greatly saves water, increases comfort , and enhances convenience — especially in large homes or buildings. 🔥 Thermostatically Controlled Circulator Pumps Modern technology has introduced thermostatically controlled circulator pumps , allowing users to set the desired hot water temperature . The pump operates only when the temperature drops below the set point, significantly reducing energy consumption. Additionally, timer functions can be programmed so the pump runs only during periods of high hot water demand — such as mornings and evenings — minimizing heat loss and improving energy efficiency throughout the day. ⚡ Pump Efficiency and Maintenance Key performance parameters of circulator pumps include: Flow Rate (Q) Head Pressure (H) Power Consumption (P) Pump Efficiency (η) It’s essential to ensure that these parameters are properly matched to your system to maintain optimal performance. Also, users should avoid cavitation , a condition caused by excessively low pressure that can lead to impeller damage and reduced efficiency. ✅ Conclusion The Circulator Pump  plays a vital role in hot water, cooling, and closed-loop circulation systems. It helps save water, reduce energy costs, and enhance system performance  in residential, commercial, and industrial settings. If you’re looking for a high-performance, quiet, and energy-saving circulator pump ,👉 LEO Circulator Pump  is your perfect choice — built for durability, efficiency, and comfort in every application.

Vertical In-Line Pump 🚀 What is an In-Line Pump? 8 Benefits that Make the LEO LPP In-Line Inverter Pump Your Best Choice! The LEO In-Line Pump  is engineered to integrate directly into your piping system, delivering maximum performance and significant space savings . You may have heard of an "In-Line Water Pump"  or an "In-Line Circulating Pump,"  but you might be unsure what this type of pump is and how it differs from conventional pumps. An In-Line pump  is designed for direct installation in line  with the water supply pipe. This design makes it highly space-efficient and exceptionally high-performing. LEO is here to detail the 8 key advantages  that meet your needs for both energy efficiency  and silent operation . 1. ⚡ Supreme Energy Efficiency (Low Running Costs) One of the most crucial benefits of the In-Line Circulating Pump  is its superior energy efficiency . These pumps are designed to use minimal power while maintaining optimal performance. Leo LPP In-Line inverter pump The LEO In-Line Inverter Pump  features advanced motor technology and an Inverter system . The motor automatically reduces its speed when water demand is low (e.g., opening a single faucet), eliminating unnecessary power consumption. This results in a noticeable reduction in electricity bills . Savings in Heating Systems:  Using an in-line pump in heating systems ensures a consistent flow of hot water throughout the building. This prevents the boiler from overworking, significantly extending its lifespan  and saving substantial energy .   2. 🏗️ Space-Saving Design The compact design is another major selling point of the In-Line Water Pump : Direct Pipe Installation:  Unlike traditional pumps requiring a separate mounting base, the In-Line pump can be installed directly onto the existing piping system. This makes it ideal for applications with limited space . Lower Installation Cost:  The compact size simplifies installation and maintenance. Minimal pipe modification is required, reducing both time and installation costs . Modular Design:  The structure is designed for easy access to internal components, making maintenance and repairs quick and hassle-free. For instance, in commercial buildings or pump rooms with tight footprints, installing the LEO In-Line Pump  directly into the plumbing system saves valuable space for other uses.     3. 🔇 Quiet Operation In-Line Circulating Pumps  are well-known for their very quiet operation , achieved through advanced noise-reduction technology. The quiet performance of these pumps is perfect for both residential  and commercial buildings  that require a peaceful environment for resting or working, such as hotels, apartments, or offices. Users can be confident that pump noise will not be a disturbance. 4. 🎚️ Precise Flow Control By employing advanced control systems, such as Variable Frequency Drives ( VFDs  in Inverter models), the In-Line Water Pump  provides highly precise flow control . This allows users to adjust the liquid flow rate precisely according to demand. System Optimization:  Precise flow control ensures that the optimal volume of liquid is delivered at the perfect time, maximizing system performance. Reduced Damage Risk:  It minimizes the risk of damage to equipment and various components in the system, such as a cooling system that requires a correct and consistent volume of coolant circulation.   5. 💪 Reliability and Durability LEO In-Line Circulating Pumps  are built with a focus on maximum reliability and durability: Manufactured from high-quality materials  like Stainless Steel  and cast iron, which are resistant to corrosion and wear. A design featuring robust components and advanced sealing technology prevents leaks, ensuring long-term performance . 6. 🔄 Versatility The outstanding feature of the In-Line pump  is its wide range of applications: Heating/Cooling Systems:  Used to circulate hot water through radiators or chilled water through air conditioners and other cooling equipment. Plumbing Systems:  Used to maintain a continuous water flow to fixtures and appliances within a home or building. Industrial Applications:  Used for transferring liquids such as chemicals, oils, and gases.   7. 🌱 Environmental Friendliness In-Line Circulating Pumps  are environmentally friendly because they help reduce energy consumption  and carbon emissions . By operating more efficiently and using less power, they decrease the demand for fossil fuels and other non-renewable energy sources. 8. 💰 Long-Term Cost-Effectiveness While the initial cost of an In-Line Pump  may be slightly higher than a conventional pump, the long-term cost-effectiveness is far superior: Savings on energy expenses  (due to high efficiency). Savings on maintenance and replacement costs  (due to high durability). Leo LPP In-Line pump Conclusion               In summary, the advantages of using inline circulating pumps are numerous and significant, from energy efficiency and space-saving design to quiet operation and precise flow control, as well as their compatibility with a wide range of applications. For more information Tel. 02-292-1067-70 Youtube : Leopump ประเทศไทย Line Official : @775ruust Facebook : LEOpumpThailand   TikTok : Leopumpthailand

Choosing the right water pump and water tank 1. When selecting the right water pump and tank, many users or homeowners may be confused about the size of the pump. However, there are some rough guidelines for selecting a water pump. For example, a single-story house should use a 150W pump, a two-story house 250W, and a three- to four-story house 400W. The data provided by each manufacturer is based on the estimated water usage rates of each building type and the distance traveled. Currently, most markets rely on motor capacity or wattage, but motor size does not necessarily reflect water flow efficiency as commonly understood. Therefore, users or homeowners should first calculate the appropriate water pump size for their needs, rather than relying solely on motor size or wattage. The following are guidelines: 1. Consider the number of water points and the total amount of water required in the home, in liters per minute. Furthermore, consider other appliances, such as showerheads, garden faucets, and other equipment, to obtain a rough estimate. 2. The number of residents to determine the water consumption. This will help you choose the right water pump for your needs. 3. Measure the distance and height of the water delivery, so you can compare it with the water delivery rate specifications of the pump when selecting one. Let's look at an example of selecting a water pump. If we have a two-story house, the approximate height of the water supply points is approximately 7 meters, and there are six faucets in the house, and we estimate that three of them will be used simultaneously, we would get the following: 1. Pump delivery distance: In this case, the height to the point where water is to be delivered is approximately 7 meters. We should allow for friction, such as using reducers, elbows, or other fittings, which will reduce delivery capacity. Therefore, we should allow a 30% allowance. Therefore, we should choose a pump with a delivery distance of at least 9 meters. 2. Water delivery capacity (liters/minute): We should consider the simultaneous water usage of the entire house. In this case, we have the potential to use water simultaneously at three points. Normally, faucets have a delivery rate of approximately 9 liters/minute. (The calculations here are approximate only, as the equipment used varies. For accurate results, you can check the water usage of each device on the label attached to the device.) Therefore, the estimated minimum water consumption for this house is 27 liters/minute. Automatic water pump, Inverter system, energy saving ปั๊ม Inverter Automatic water pump Inverter system saves energy. The motor speed will rotate according to the amount of water used. To make it easier to visualize, when we turn down the faucet or turn on the water gently, the motor will also rotate slowly (use low rotation speed). As soon as the faucet is turned on, the motor will work at full power. The size of the automatic water pump ranges from 100-400 watts. For 100-150 watts, it is suitable for a house with 2-3 people. However, if it is a large detached house, a 450 watt inverter pump may be used. The system will be controlled by an electrical system. There is an electronic system to calculate water usage, such as a 450 watt pump. If we turn on water in only one spot, it will consume only 120 watts. Turn on water in 4 spots at the same time, it will consume 450 watts. Compared to a general 450 watt pump, turning on water in one spot immediately consumes 450 watts. Therefore, the inverter system helps us save on electricity costs. There are 2 types of automatic pumps: Type 1: Pump with air pressure tank Type 2: Constant pressure pump. For pumps with air pressure tanks, the advantage is that they last longer. But the disadvantage is that they may need to be refilled with air. Or when there is rust inside, we may have to replace the entire tank (the price is not high). As for the constant pressure pump, the advantage is that if we turn on the water at 4 points at the same time, the water pressure will flow equally at all 4 points, regardless of whether the faucet is at the front or the back. If comparing both types with the same wattage, the air pressure pump will supply water more forcefully. What about water tanks? How necessary are they? Once we've selected the water pump we want, do we need to purchase an additional water tank? What size tank should we choose? What material should we use? Let's consider the following: 1. The ability to store tap water for home use in the event of a water outage or emergency, such as shutting off water for water mains (the waterworks main) or repairs, a broken water pipe accident that prevents water from being delivered, or even a power outage that prevents the water pump from functioning. We can still have water from the tank for emergency use. 2. It helps to hold water and allow for sedimentation of foreign matter that might have escaped with the water (foreign matter may have escaped during pipe connections or repairs before the water reaches the home). 3. It helps save on electricity costs, as once the tank is full, the pump doesn't need to be turned on, preventing the pump from running constantly. What types of water tanks are there? We basically divide water tanks into two types: above-ground and underground. • Above-ground tanks are suitable for homes with sufficient space. Popular types of water storage tanks for this installation are stainless steel and plastic tanks installed above ground. Their advantages include easy maintenance and easy movement. • Underground tanks are suitable for homes with limited space and require a strong support structure to prevent potential subsidence. Concrete and plastic tanks are suitable for this installation. What size tank do I need? On average, one person uses approximately 200 liters of water per day. This means that the water tank should be calculated by multiplying the number of household members by their daily water consumption (the result should be multiplied by 2 to account for water shortages for more than one day). *** 200 liters (water volume/person/day) x number of people in the house x number of days of water reserve. "The selection of the appropriate water pump and water tank and the basics of water usage calculations mentioned above can be applied immediately to those looking for or installing a new water pump and water tank."   For more information Tel. 02-292-1067-70 Youtube : Leopump ประเทศไทย Line Official : @775ruust Facebook : LEOpumpThailand   TikTok : Leopumpthailand ตัวแทนจำหน่าย : https://www.leo.co.th/dealer

What type of solar panel should you choose? Currently, the trend of using electricity from renewable energy sources such as solar cells is very popular. However, there are many types of solar panels. Therefore, which type of solar panel should you choose to get the best value for your money and maximize efficiency? You can find the answer in this article.                 1. First, let's get to know what a solar panel is. A solar panel (or photovoltaic) is a combination of multiple solar cells connected together in a single circuit to increase the production and distribution of electricity. The resulting electricity is direct current (DC).                 2. What is Crystalline Silicon (c-Si)? Today, nearly 90% of solar panels are made from silicon, which can be in various forms. 95% of solar panels used in homes are crystalline silicon. The purity of the silicon is the most important property, determining the type of silicon used in solar cells. Based on its properties and chemical composition, purer silicon has better molecular arrangement and is more organized, allowing it to convert solar energy into electricity. Therefore, the efficiency of a solar panel depends on the purity of the silicon. However, the process of achieving this purity is complicated, complex, and expensive. Therefore, the efficiency of a solar panel is not the primary consideration. Instead, it may be the cost, the return on investment, the efficiency per square meter, and the size of your available space. There are two main types of silicon crystals in solar panels: monocrystalline silicon and polycrystalline silicon. (Monocrystalline Silicon Solar Cells) Monocrystalline (Mono-Si) Solar Cells Solar cells made from monocrystalline silicon (mono-Si), sometimes called single crystalline (single-Si), are relatively easy to identify because each cell appears to be a square with four corners cut off and is dark in color. Monocrystalline solar cells are made from high-purity silicon. They begin as cylindrical silicon rods. This is achieved through a process called the Czochralski process, which agitates the crystals to form a cylindrical rod. These rods are then cut into squares and rounded off at the four corners to maximize efficiency and minimize mono-silicon consumption. These rods are then cut into sheets, resulting in the appearance of individual cells seen in solar panels. Advantages of Monocrystalline Solar Panels Monocrystalline solar panels are the most efficient because they are made from the highest grade of silicon, with an average efficiency of 15-20%. Monocrystalline solar panels have the highest efficiency per square meter because they produce high power output and require the least amount of space for installation. Monocrystalline solar panels can produce nearly four times the electricity of thin-film solar panels. Monocrystalline solar panels have the longest lifespan, averaging approximately 25 years or more. Monocrystalline solar panels produce more electricity than polycrystalline solar panels in low-light conditions.                 Disadvantages of Monocrystalline Solar Panels Monocrystalline solar panels are the most expensive type of solar panel. Sometimes, it may be more cost-effective to replace monocrystalline with polycrystalline or thin-film solar panels. If a monocrystalline solar panel is dirty or partially obscured, it can damage the circuit or inverter due to overvoltage. (Polycrystalline Silicon Solar Cells) Polycrystalline solar panels are the first type of solar panels made from silicon crystals. They are commonly called polycrystalline (p-Si) but are sometimes called multi-crystalline (mc-Si). In the manufacturing process of this type of solar panel, silicon or glass is melted and poured into a square mold. Once it cools, the square glass is cut into thin sheets, making each cell square without any cut corners. The color of the panel is a light blue.                                 Advantages of Polycrystalline Solar Panels Polycrystalline solar panels have a simple and straightforward manufacturing process, requiring less silicon compared to monocrystalline solar panels. Polycrystalline solar panels have slightly higher efficiency at high temperatures than monocrystalline solar panels and are less expensive than monocrystalline solar panels. Disadvantages of Polycrystalline Solar Panels Polycrystalline solar panels have an average efficiency of 13-16%, which is lower than monocrystalline solar panels. Polycrystalline solar panels have a lower efficiency per area than monocrystalline solar panels. Polycrystalline solar panels are blue in color, which can sometimes be unattractive compared to monocrystalline and thin-film solar panels, which are darker in color and blend better with surroundings such as rooftops. (Thin Film Solar Cells) ( Amorphous solar panels are one of several types of thin-film solar panels.) The general manufacturing process for thin-film solar cells (TFSCs) involves coating a material that converts light energy into electricity in multiple thin films or layers, hence the term "thin film" solar cells. These coatings come in many different varieties, and the names of thin-film solar cells vary depending on the material used. These include amorphous silicon (a-Si), cadmium telluride (CdTe), copper indium gallium selenide (CIS/CIGS), and organic photovoltaic cells (OPC). In terms of efficiency, thin-film solar cells have an average efficiency of 7-13%, depending on the type of coating material. Typically, homes use thin-film solar panels, with only about 5% efficiency.                 Advantages of Thin-Film Solar Panels Thin-film solar panels are cheaper because they are easier to produce in large quantities than crystalline silicon. In extremely hot climates, thin-film solar panels have less impact. There's no problem with dirty panels causing circuits to burn out. If you have plenty of space, thin-film solar panels are a good choice. Disadvantages of Thin-Film Solar Panels Thin-film solar panels have low efficiency. Thin-film solar panels have low efficiency per area. They require additional costs for construction and other equipment, such as wiring and connectors. They are not suitable for rooftop use due to limited space and shorter warranty periods than crystalline silicon.   “Based on the information above, I think anyone interested in or considering purchasing solar panels should now have an answer to their question: Which type of solar panel is best? You can find information on calculating the current and other related factors at the link below.” For more information Tel. 02-292-1067-70 Youtube : Leopump ประเทศไทย Line Official : @775ruust Facebook : LEOpumpThailand   TikTok : Leopumpthailand ตัวแทนจำหน่าย : https://www.leo.co.th/dealer

Tips for installing a centrifugal pump to eliminate usage problems The area must be properly secured and secured to prevent wobble.Pipe Extension Expanding a centrifugal pump pipe should be 1-2 times the pipe size, for example, from a 2-inch pipe to a 3-inch pipe. Reducing the pipe, for example from 2 inches to 1 inch, is not recommended. This will not improve water delivery and will result in water pressure not being as desired or as specified for the pump. Pipe connectors should be trapezoidal to prevent air from accumulating and obstructing the water flow. When installing the pump pipe horizontally, it should not be placed too vertically. Instead, it should be placed at an angle of approximately 10 degrees to prevent air from lingering and obstructing the water flow in the pipe. When connecting the pipe from the pump, the pipe should be as short as possible, but not less than 6 times the pipe diameter. For example, a 2-inch pipe, or 50 mm x 6, will equal 300 mm, or the pipe should not be shorter than 30 cm. Vertical pipe connections should not be too vertical. It should be placed at an angle of about 45 degrees for good water viewing. There should be no excessive water pressure from the top to the bottom, which will save energy in sucking water and make the suction more efficient.     Skull at the end of the suction pipe The pump should be submerged in water at a depth of four times the diameter of the pipe, and the head should not be too close to the surface. If the head is too close to the surface, the suction will cause vibrations, creating eddies and air bubbles due to the water's agitation. This can easily lead to cavitation, which can lead to impeller wear and tear. The head should not be submerged completely into the ground. It should be at least 1-1.5 times the diameter of the pipe to avoid sucking up dirt from the water. The head should be larger than the pipe. For example, a 2-inch pipe requires a 3-inch head. For heavy water usage, use a swing-valve head, not a spring-loaded one, as this can cause difficult opening and closing during water delivery (personal opinion). The last point is that when installing a centrifugal pump, the water pipes should be firmly fixed both horizontally and vertically, including the pump itself. It must be stable because during use, both the water pump itself and the water delivery/suction pipes will vibrate. For more information Tel. 02-292-1067-70 Youtube : Leopump ประเทศไทย Line Official : @775ruust Facebook : LEOpumpThailand   TikTok : Leopumpthailand

Installing a water pump for 100% performance : Once you've selected a water pump, it's not just the pump itself that's important. Connecting the pump for use is equally important. Proper connection ensures maximum water pressure and efficiency. Therefore, this article will provide recommendations on what to do and what not to do when installing a water pump for 100% effective water pressure. Reducing or bending pipes directly affects pump efficiency. In addition to proper pipe connections, careful planning can also improve pump efficiency. Installing a water pump to get 100% performance For almost every type of pump, the inlet and outlet pipes should be minimized and water pressure friction reduced to ensure the pump Installing a water pump to get 100% performance. "Don't shorten or bend pipes." We should avoid shortening or bending pipes within 30-45 centimeters (from the pump's connection point to the water pipe) as this will affect the efficiency of the pump's inlet and outlet water delivery. "Know the pump's specifications." We should research the specific type of pump, including its specifications, to ensure it meets our needs and avoids unnecessary waste. Water pump sepcification From the nameplate that tells the water pump specs as above, let's look at the main information first: how much water the water pump can supply and how. You will see that Q= 30-100 liters/minute. The numbers in the range of 30-100 liters will vary according to the distance of use, which is in the range of 33-16 meters and the furthest distance is 36 meters (vertical). In this section, it would be very good to look at the graph of that water pump as well. To read the graph, click. For installing a water pump to get 100% water pressure Calculating water reserves for use is equally important, which is choosing the right size water tank for use. Selecting the right pump and water tank for use can save you more than half of your expenses. Click. When we don't have enough water reserves to meet our water usage, the water may dry up or become insufficient, which can negatively impact the water pump. If the water pump doesn't have an automatic shut-off system, the motor will run constantly, potentially burning out the motor. If the water pump does have an automatic shut-off system, air will enter the pump, resulting in inconsistent water suction. You'll need to bleed the air because the pressure won't be consistent, resulting in an inconsistent water supply. The process of bleed-out the air is quite complicated, so it's better to prevent it now than to fix it later. There is also a "BY PASS" installation method, which is very important because when the electricity goes out and the pump breaks, we will still be able to use water as normal. To connect a water pump in the By Pass method, click .   Again!! Here are some important things we need to know and consider to ensure your water pump operates at its highest efficiency and delivers 100% water pressure. 1. Understand your water pump's specifications thoroughly. 2. Calculate the water reserves appropriately for your water pump. 3. Avoid shortening or bending pipes within 30-45 centimeters to reduce obstructions and reduce water pressure friction within the pipe. This way, our water pump will work at 100% efficiency, including saving energy and costs. For more information Tel. 02-292-1067-70 Youtube : Leopump ประเทศไทย Line Official : @775ruust Facebook : LEOpumpThailand   TikTok : Leopumpthailand Find Dealers : https://www.leo.co.th/dealer

AC DC What is the difference between AC and DC? What are the differences and advantages and disadvantages of AC and DC? Direct current (DC) is electricity that flows in only one direction, from the negative terminal of the power source, through electrical devices, and back to the positive terminal of the power source. Alternating current (AC) is electricity that flows in the reverse direction. That is, it has no polarity and constantly reverses direction. ความแตกต่างของไฟ AC DC Properties of Alternating Current (AC) 1. Can be transmitted over long distances without power loss. 2. Can be converted to higher or lower voltages as needed using a transformer. Properties of Direct Current (DC) 1. Electric current flows in the same direction. 2. Always has a positive voltage or emf. 3. Can store charge in cells or batteries. Advantages of Alternating Current (AC) 1. Good for lighting systems. 2. Cost-effective and easy to produce. 3. Used for high-power appliances. 4. Used in welding machines. 5. Used in almost all types of electrical equipment and devices. Benefits of Direct Current (DC) 1. Used for plating various metals. 2. Used in chemical experiments. 3. Used for welding and cutting steel sheets. 4. Magnetizing steel. 5. Used for charging batteries. 6. Used in electronic circuits. 7. Used for travel power, such as flashlights. AC DC What's the difference between AC and DC? To charge your phone or computer using household power, you'll need an adapter to convert alternating current (AC) to direct current (DC). What is the difference between AC and DC power? We may see some cases where both use AC power but require an adapter. This does not mean that the electrical appliance is a DC system, but rather that the voltage required is different. Direct Current and Alternating Current in Solar Cells The Differences and Pros and Cons of AC-DC Power One way to tell is to look at the electrical appliance label. If it has a Hertz (Hz) rating, such as 50Hz or 60Hz, it's an AC appliance, as DC systems don't have this frequency. AC power typically has a high voltage. For example, our home electricity is 220V, which is considered relatively low. Sometimes, if you see it in the suburbs with large utility poles, it can have voltages in the tens of thousands. Because long-distance electrical connections with high voltages eliminate the need for large wires, this can save costs. In DC electrical systems, the voltage is low, such as 12V, 24V, or 48V. If it doesn't exceed approximately 30V, it's usually harmless to the human body. Larger systems, however, use higher voltages, such as 300-600V. Installation requires a skilled technician, as high-voltage DC currents are extremely dangerous. In small solar cell systems, we typically use low voltages, such as 12V and 24V, for the same amount of electrical power consumption. But using a low voltage means that these electrical appliances will consume more current or Ampere instead. As a result, these electrical devices must be able to handle higher currents, making them more expensive. Or, designing a system that uses a low voltage will increase the price of these devices. dummies For more information Tel. 02-292-1067-70 Youtube : Leopump ประเทศไทย Line Official : @775ruust Facebook : LEOpumpThailand   TikTok : Leopumpthailand ตัวแทนจำหน่าย : https://www.leo.co.th/dealer

Water Hammer What is Water Hammer? Water hammer is one of the household water-related terms that water users should be aware of to avoid it and know how to handle it. Water hammer is caused by the sudden shutdown of a pipe, causing a sudden change in pressure. A simple analogy is to imagine a person as water and a pipe as a path. If everyone were to walk along, there would be no problem. However, if an object suddenly blocks the path and causes a sudden stop, those walking together would collide with each other. The momentum from walking creates a collision force when the pipe suddenly stops. This causes the pipe to vibrate back and forth, creating a creaking sound. Water hammer is a damaging force related to the incompressibility of water. This phenomenon typically occurs when empty pipes are filled with water or when valves are suddenly closed. It can cause a loud noise or even damage pipes, valves, etc. Pipe Line broken by water hammer Sudden pressure surges occur when water changes momentum rapidly in a closed system. Since water is an incompressible fluid, the energy of the moving water has nowhere to go. If a valve is suddenly closed, this can create a pressure wave that acts on the pipe, causing loud noises and, in some cases, pipe damage. In high-rise buildings, water hammer is common due to the height difference, which requires high pressure and velocity during the initial pressure buildup. This is especially true in commercial buildings. Connecting water pumps to high-rise buildings " Click " Water hammer becomes a risk when a valve is closed rapidly in a piping system. Therefore, non-return valves are often used to prevent pressure surges from reaching the pump, thereby reducing the risk of pump damage. In some solenoid valves, the closing time can be extended, reducing the impact of water hammer. In applications where rapid valve closure is required, shock absorbers, such as diaphragm tanks, can also be installed to mitigate the impact of water hammer. Slow Pressure Boosting: Water hammering is also a risk during the filling of a piping system that is empty. Water hammer occurs when a pipe becomes full and the fluid suddenly stops moving. To avoid water hammer, the system should be filled slowly and gradually increased in pressure over a longer period of time. Some booster systems have a booster function and can be programmed to reduce the risk of water hammer. For more information Tel. 02-292-1067-70 Youtube : Leopump ประเทศไทย   Line Official : @775ruust Facebook : LEOpumpThailand

Star Delta Starting a DoL / Star Delta motor begins with the operation of a water pump. It requires electrical power to make the motor work. As for the types and methods of starting the motor, there are 3 main types of starting the motor: Direct on-line (DOL), Star-Delta, and Soft Start. This is to reduce the occurrence of various problems that follow, such as Water Hammer. What causes Water Hammer in the pipe system and what methods can help prevent it? Let's take a look. 1. Direct On-line Start-up (DOL) : This method connects the 3-phase power supply directly to the motor. This initial start-up method causes the motor to consume up to six times its normal electrical current, leading to high electricity bills. Another major problem with this start-up method is freewheeling motor start-up, or stopping the motor without controlling its speed or torque. This results in water surges and subsequent water hammer, which can damage various equipment, including the water pump. 2. Star-Delta Start-up : This second starting method involves starting the motor in star-phase and then switching to delta-phase. This method reduces the electrical current consumption by three times compared to DOL, thus reducing electricity bills somewhat. However, star-delta start-up presents problems during start-up, as it reduces the system voltage by approximately 42%, reducing both motor torque and load torque. Consequently, the motor cannot start. 3. Soft Starter : This startup method can prevent all problems, including water hammer and insufficient torque for star-delta starting. It relies on the Voltage Ramp Up principle, which starts and stops the motor by gradually increasing/decreasing speed in line with the motor torque. This reduces electrical current, prevents pressure surges in the pipe system, and also reduces problems caused by insufficient torque. When selecting the size of a soft starter for water pumps, it should be the same size as the motor, as the load has a low moment of inertia. However, if there are more than 10 starts and stops per hour, the soft starter should be one size larger. The basic electrical wiring method for water pumps works like this. For Leo water pumps , the Star-Delta connection method is typically used for relatively large pumps, such as those with 7.5 HP or higher, and 3-phase power. Furthermore, the cost of installing the electrical cabinet and water pump is significantly higher than with conventional connections. This is to avoid damage caused by water hammer and other potential hazards. For more information Tel. 02-292-1067-70 Youtube : Leopump ประเทศไทย   Line Official : @775ruust Facebook : LEOpumpThailand

How many types of electrical systems are there? Nowadays, electrical systems in homes bring convenience, whether it's fans, air conditioners, or televisions, they all rely on electricity. Therefore, we should have basic knowledge about electrical systems: how many types of electrical systems are there in homes, what type of electrical system is required in homes, and how many types of electrical systems are there? Let's get to know them.   What is an electrical system? How many types of electrical systems are there? An electrical system is the transmission of electricity from the source to the user, depending on the type of user. It is transmitted from the power station via high-voltage lines to a substation, then to a transformer, which reduces the current. It is then sent to homes, offices, or industrial plants. The electrical system typically supplied to homes is a low-voltage system. The Electricity Generating Authority of Thailand (EGAT)'s electrical system selection is based primarily on the user's needs. The selection of the system is based on two main factors: the amount of electricity consumed and the type or number of appliances within the home.   How many types of electrical systems are there? The question is: There are two types of electrical systems: single-phase and three-phase. These two types differ in terms of voltage. This difference leads to different electrical system applications. Single-Phase Electrical System (Single-Phase or 1-Phase 2-Wire) This system uses two electrical wires, which operate on alternating current (AC), with a voltage of 220-230 volts and a frequency of 50 Hz. Simply put, it consists of two incoming electrical wires. One wire carries a constant current, called the "Line (L)" wire, and the other wire remains idle, called the "Neutral (N)" wire. Imagine a single electrical outlet in your home with only two sockets. If you use a screwdriver to test one of the sockets, you'll see no reaction, as if there's no current flowing through it. However, if you plug in an appliance and turn it on, you'll see that the current flows normally. This is because all two sockets must be plugged into the sockets, and the electrical wires share two common wires, ensuring a complete electrical circuit. Some electrical outlets with three sockets are also single-phase, but the additional socket is connected to a ground wire, allowing the current to flow to the ground in the event of a power leak, enhancing safety. Advantages of Single-Phase Electrical Installation It is convenient to install and easy to request. The installation cost is low. However, it is not cost-effective in the long run due to its high energy consumption. However, single-phase electrical systems are ideal for household use because they provide the most optimal power supply.   3-Phase 4-Wire Electrical System This is a 3-phase, 4-wire AC system, with 3 of the wires carrying electrical current. Simply put, there are 4 input wires: 3 are constantly energized, called "line (L)" wires, and 1 is a non-electrical wire, called "neutral (N)" wire. If the voltage between the line wires is measured, the voltage is 380-400 volts. However, if the voltage between the line wires is measured, the voltage is 230-250 volts. Using 3-phase electricity is ideal for industrial plants that require high electricity consumption. However, if a 3-phase system is used in homes, it does not directly supply all 3 phases to individual electrical devices. Instead, it uses these 3-phases to share them in a single-phase system, thus saving electricity costs. Advantages of Installing a Phase 3 Electrical System Although it's difficult to obtain and requires a relatively high installation fee due to electrical insurance and installation fees, in the long run, installing a Phase 3 electrical system can significantly save you more on your electricity bill than a Phase 1 system.   Tips: Electrical System Misunderstandings Many people often wonder why electrical systems have a phase 1 and then go straight to phase 3. Is there a phase 2 electrical system? The answer is: There is no such thing as a phase 2 electrical system. All electrical systems have only phases 1 and 3. What type of solar cells are suitable for home electrical systems? ระบบไฟฟ้าบ้านที่ใช้ Many people, when looking to install a home electrical system, hire a technician or purchase a prefabricated house. Empty houses will automatically receive a Phase 1 electrical system. This is because the installation process is easy and the equipment costs are not too high. Therefore, if you have knowledge of electrical systems and understand your needs, you will save more on your electricity bill. However, before installing an electrical system, you will need to consider your electricity usage and the size of your home. For a small home, a Phase 1 electrical system is sufficient. On-grid solar cells are a good choice for using solar cells with a home electrical system, which can provide relatively stable electricity because they also use electricity from the power grid. For more information Tel. 02-292-1067-70 Youtube : Leopump ประเทศไทย   Line Official : @775ruust Facebook : LEOpumpThailand

What are booster pumps and transfer pumps? What are booster pumps and transfer pumps? Transfer Pump and the working principles of the system that you should know Common problems include low water pressure, weak water flow, and water shortages, especially in apartments, hotels, factories, office buildings, and more. Before installing a water pump or selecting pump equipment, it's crucial to understand the types and selection of pumps to avoid these water usage problems. Pumping water from the source to the destination relies on water level differences to control its operation. Transfer pumps can be controlled by one or two pumps. However, if two pumps are used, the controller must have a function that switches the pumps. Transfer pumps typically use two pumps for small buildings, or three for larger buildings. These pumps alternate between each other to prevent overloading. If one fails, the other pumps can still supply water. Alternatively, they can be used to supplement the other pumps in cases where the building's water demand is so high that the first pump can't keep up with the demand. Transfer pumps typically use an electric float or electrode to switch the pumps. Let's take a look at booster pumps and transfer pumps . How is that? Booster - Transfer Pump Set     End-Suction - transfer - Booster Pump Key Features 1. Can be installed directly into building water supply pipes. 2. Reduces installation time. Main components of the transfer unit: 1. Water pump 2. Control panel 3. Discharge header 4. Check valve 5. Gate valve 6. Float-less level switch 7. Pressure gauge 8. Base plate Things to consider when selecting a water pump for a transfer pump system: 1. How many liters per tank should the water tank hold? 2. Main pipe size (for new installations, the distributor can recommend pipe sizes). 3. How many floors does the building have? (On which floor is the water tank located?) 4. Horizontal length to the water tank. Transfer Pump water pump control is popularly used in high-rise buildings, apartments, condominiums, industrial plants, and in the agricultural sector, etc. Normally, buildings with a height of 5 floors or more, and each floor has many water usage points, often need to use 2 sets of booster pumps together. The Transfer Pump will be used to send or fill water up to store on the rooftop where there is a water storage tank. Then, the Booster Pump will be used to distribute water to various rooms within the building. The water used in the building will have a constant water pressure. Maintenance methods can be observed and checked as follows: 1. Check for any abnormalities in the controller's operation, such as: 2. Every time you check the cabinet's front light, it should be lit continuously. If an overload light is present, it indicates a pump problem. Immediately inspect the pump. 3. Listen to the motor for any unusual noises. 4. Check the pump neck seal for any water leaks. To ensure the pump lasts longer and prevents water delivery problems, we should check the system every 6 months. What is a Booster Pump? A booster pump is a type of water pump system used to increase water pressure, or simply increase the pressure in a pipe system. This helps maintain a consistent water flow when it's turned on. It's ideal for use in households, high-volume residences, and buildings and industrial plants. The principle behind a booster pump is that whenever water is turned on, the pressure in the pipes decreases to a preset level. The pressure switch then activates the water pump to supply water to the system. The pressure gradually increases until it reaches the preset pressure, at which point the pump stops operating. Once the pressure reaches the preset level, the pump continues this cycle. In some cases, homes or industrial plants with high water demands may design a system with two water pumps that work together or provide booster power. The second pump will operate as a supplement if the first pump can't keep up with the pressure. Most booster sets use a diaphragm pressure tank (Diaphragm Pressure Tank) which is included in the set. Its function is to slow down the operation of the water pump, thus extending the life of the water pump. Leo Booster - Transfer Pump Set Leo Booster - Transfer Pump Set - Pressure Tank For more information Tel. 02-292-1067-70 Youtube : Leopump ประเทศไทย   Line Official : @775ruust Facebook : LEOpumpThailand

Split Case Pump Now that we've discussed the various types of centrifugal pumps , including end-suction , submersible , and self-priming , there's another type of pump that's popular in our industry: the Horizontal Split Case Pump. This type of pump is also a sub-type of centrifugal pump, but the pump body is special in that it's separated into two chambers. This is to accommodate a larger volume of water than conventional centrifugal pumps. Now, let's take a look at what a Horizontal Split Case pump is and what it looks like. A split-case pump (Horizontal Split-Case) literally means a pump housing that is divided horizontally into an upper and lower housing, unlike an end-suction pump that has an open front and back cover. A split-case pump is also known as a double end suction centrifugal pump, as the impellers that suck on both sides are different from normal impellers, or what we sometimes call a snail pump. Split Case Pump Cutting                           The two suction impellers are located in the center of the pump housing, with bearings at both ends of the shaft. Advantages of Split Case Pumps over End-Suction Pumps 1. Split-case pumps have a much higher delivery rate and water volume than end-suction pumps, capable of delivering up to 46,000 cubic meters of water per hour and a maximum distance of 225 meters. They are ideal for firefighting, irrigation, and other high-volume systems. 2. Split-case pumps are more convenient for maintenance because the pump housing can be removed from the top, without any piping work. End-suction pumps, on the other hand, have either front or rear openings. Dismantling the pump for maintenance requires moving the piping first. 3. Due to its unique housing, split-case pumps boast enhanced balance thanks to their design. Between-the-bearings pumps feature ball bearings on both sides of the impeller to balance the shaft supporting the impeller's weight. A double-suction impeller is another unique feature of this type of pump, featuring a double-suction impeller design. The double-suction design balances the shaft, supporting the use of two ball bearings and reducing the pump's load load compared to centrifugal pumps. 4. Split-case pumps have impellers located between the ball bearings, allowing them to withstand greater vibrations due to vibration-absorbing ball bearings at both ends of the shaft. Disadvantages of Split Case Pumps 1. Split-case pumps are relatively expensive, but in terms of long-term maintenance costs, they are more cost-effective than end-suction pumps. 2. Split-case pumps are bulky and large, requiring more installation space than end-suction pumps. GSX Fire Pump    GSX Split Case   When assembled, the "Horizontal Split Case" pump delivers power and functions perfectly. It is a horizontal split case fire pump. This type of pump is suitable for low to high volume pumping and should be used where the water level in the reservoir is higher than the pump. If this is unavoidable, a priming tank should be installed to ensure that the fire pump can pump water at all times. For more information Tel. 02-292-1067-70 Youtube : Leopump ประเทศไทย   Line Official : @775ruust Facebook : LEOpumpThailand