What is a diaphragm pressure tank? Why is it important?

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What is a diaphragm pressure tank? Why is it important?

A pressure tank is a tank used to store water that is left over from pumping by a water pump and from the flow of water at the water supply point. It is stored in the tank and then distributed to the pump. It is commonly used in buildings, condominiums, industrial factories, houses, etc.

Structure

A diaphragm pressure tank is a closed vessel containing a diaphragm (a flexible rubber sheet) inside. It is divided into two parts:

1. The water-filled part, which is connected to the water supply pipe.

2. The air-filled part, which is located above the diaphragm.

Pressure Tank Operation Principle

The principle of operation is that when the water pump is turned on, it first pumps water into a storage tank, which contains a diaphragm inside the tank. The bag expands until the bag is full, then shuts off. When water is used, water is first drained from the pressure tank before the pump has started. For example, in homes and buildings with conventional water pumps without pressure tanks, the pump starts immediately upon turning on the water. This can cause loud noises due to the pressure in the pipes, creating a reaction known as water hammer. However, if a pressure tank is used and the water is turned on, the pump will not start, but will use the water in the tank first, until the pressure drops, and then the pump will resume pumping water to refill the tank.

Why is a diaphragm pressure tank important?

1. Maintains constant water pressure: When water is turned on, the water in the pressure tank is used first, preventing rapid water pressure drop and preventing the pump from running too frequently, which extends the life of the pump.

2. Prevents water hammer: When the pump suddenly stops, the water flow in the pipes also stops. This can cause shock or pressure surges in the pipes, which can damage pipes and equipment. A diaphragm tank helps absorb these shocks.

3. Reduces pump load: Because the diaphragm tank stores reserve water, the pump reduces the need for frequent operation, saving energy.

4. Prevents pump run-off: Without a diaphragm tank, the pump could run until the water in the system is depleted, causing the pump to run dry and become damaged.

For water pumps without a pressure tank:

During a water pump shutdown due to the required pressure, if water is used, the system pressure will gradually decrease until it reaches the point where the pump must restart. This may result in continuous operation or frequent disconnection, reducing the pump's lifespan.

When a water pump stops, if water is used, the system pressure will gradually decrease until it reaches the point where the pump must restart. During this time, the system pressure will become unstable, resulting in inconsistent pressure. The water supply may be inconsistent or weak.

Therefore, when large amounts of water are used, such as in high-rise buildings, a pressure tank is required. Bootster Pumps can address pump lifespan and inconsistent water pressure.

ถังแรงดันไดอะแฟรม — Diaphragm Pressure Tank

Pressure Tank Components

Pressure Tank

The tank is available in both vertical and horizontal configurations, with a diaphragm insert inside.

Diaphragm Insert

This is the insert used to hold water inside the diaphragm pressure tank. It is typically black and made from a variety of materials, such as Butyl, which is suitable for potable water and is of high quality, EPDM, a highly flexible synthetic rubber, or natural rubber.