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The Purpose of The Best Foot Valve for Your Industrial Project

The Purpose of The Best Foot Valve for Your Industrial Project

A foot valve comes under the check valve category, allowing just one flow direction. Use foot valves when a pump is required, such as when experts must draw water from an underground well. These valves maintain the pump primed by allowing water to pass into but not leave, making them suitable for usage in pools, ponds, and wells.

Table of content:

  • Defining foot valves
  • Where can you find these valves?
  • What is the purpose of the foot valves?
  • Why will foot valves be required for your project?
  • Construction of these valves
  • How do these valves function?
  • Why is a filter required for foot valves?

Defining foot valves:

It’s a non-return valve with strainers positioned at the free end of the pump suction pipes. When the pump has a reverse suction, foot valves are employed. These valves are installed at the wet well of the pump.

It’s because the flow region of the foot valves is greater than the pipe size; there is only one head-loss happened.

  • Foot valves are well-known for their capacity to maintain continuous suction within the pump. Foot valves are a variant of the lift check valve. These valves are installed at the bottom of a pump suction pipe and are designed for up flow.
  • When used with fluids containing solids, foot valves could leak and are challenging to service. Foot valves would reduce the available net positive suction head. Hence, PVC or PVDF-made valves can help in these circumstances.

Where can you find these valves?

A valve is often installed at the bottom of a pipeline or a pump. Foot valves act similarly to ball check valves but have the front with a shield or screen covering it to prevent debris from coming to the line. The opening of the valve is bigger than the line itself to minimise head loss.

You can discover foot valves in lakes, swimming pools, and nearly any other location where a pump is present. These valves allow the pump to remain primed, allowing liquid to enter but preventing it from exiting.

Over time, the screens or baskets surrounding the valve opening become blocked, especially in ponds and other water sources. It is critical to examine and wipe your valves regularly for optimal performance.

What is the purpose of the foot valves?

Foot valves’ primary purpose is to stop water from running back down the pipe. It’s also recognised as the foot valve. It allows the pump to lift the water but does not allow it to flow down slightly.

Why will foot valves be required for your project?

  • Foot valves are useful because they protect water pumps from damage caused by dry runs and save energy waste.
  • These valves are an essential part of all water pumping installations. The above example demonstrates how the foot faucet operates on a tiny scale. Consider the consequences of not employing foot valves in higher-volume scenarios.
  • Water must be pushed from a chamber on the ground to tanks on buildings. It necessitates the employment of strong electric pumps. These pumps, for example, normally function by creating a suction that drives water upward through the pipe system to the destination tank.
  • As a result of the suction caused by the pump, there is a steady column of water in the pipe while it is running. When the pump is turned off, the suction diminishes, and gravity takes over the water column.
  • If there were foot valves, the water would run back down the pipe to its actual source. The pipe would be devoid of water and instead filled with air.
  • When the pump is switched back on, the air in the pipe will fight the flow of water, and water will not flow through the pipe even though the motor is turned on. When this occurs, dry runs occur, which can harm the pump if not treated soon.
  • The foot valves successfully eliminate this problem. When the pumps are switched off, there is no water backflow. The pump remains primed until the next time it is used.

Construction of these valves:

Foot valves are made from various materials, much like any other valve. While each valve will change somewhat, the overall concept is universal. You may take a look at the foot valves we disassembled below.
The primary valve body and line attachment, the ball, the seal, the seal carrier, and the screen are all part of it. You may have noticed that an expert may completely dismantle this valve for cleaning.
You can buy this type from us directly, and it includes a uniquely built ball mechanism. It is not your typical sphere but a weighted cup design that provides improved performance and longevity.
Unlike typical ball-style valves, this valve ball would not spin in a wear-out situation, allowing leaks to occur.

How do these valves function?

As a unidirectional flow valve, a foot valve opens in one manner and closes when the flow direction is reversed. In applications such as a well, you can only retrieve water from the well. Any residual water in the pipe will be prevented from flowing backwards through the valve toward the water source.

Let’s look at the procedure in further detail. Using foot valves in shallow subterranean water wells entails the following steps.

  • First, determine where you want to put the valve. Generally, experts install this kind of valve at the piping’s pick-up end. It is towards the bottom of the well.
  • When the pump is turned on, suction is generated, sucking the water up through the pipe. Due to the pressure from the incoming water, the foot valves open as water flows higher.
  • When the pump is turned off, the upward pressure stops. When this occurs, gravity will begin to work on the remaining water in the pipe, attempting to induce it to go lower back into the well. The foot valves, however, prevent this from happening.
  • The pipe’s water exerts downward pressure on the foot valves. The foot valves do not open in descending motion since it is unidirectional.

Instead, the water pressure seals the valve securely, preventing any reverse flow back towards the well and from the pump to the sump.

Why is a strainer required for foot valves?

Experts employed strainers to safeguard valves because those prevent the collection of debris. These things might jam the foot valves and harm the pump and its functionalities. As a result, strainers are an essential component of foot valves.

Petron Thermoplast provides the best plastic pipes and valves at an affordable cost. These are durable and efficient as per the standard. If you require the best foot valve, you may easily purchase it and notice its efficieny.