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What is the function of the foot valve?

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The Foot valve consists of valve evaluation, disc, bonnet, bushing, sealing ring and other parts. See the water from the water source in the figure below from the bonnet to the valve body. Under the action of fluid pressure, the valve disc opens water.

When the pressure in the outlet pipe closes the valve disc rapidly after stop, the liquid will not be poured back to the water source, which plays the role of unblocked pumping and saving water energy loss.

  1. Check valves should be installed on equipment, installations and pipes to prevent medium backflow.
  2. Check valves are generally suitable for cleaning media, not for media containing solid particles and high viscosity.
  3. Vertical lift check valves should be generally used in horizontal pipelines with nominal diameter of 50mm.

What Is The Structure and Principle of Foot Valve

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The Foot Valve is composed of valve body, disc, cover, bushing, sealing ring and other parts. See the water from the water source in the figure below. Under the pressure of the fluid, the disc opens water. When the pressure in the outlet pipe is stopped, the disc closes quickly. The liquid will not pour back to the water source. It plays the role of unimpeded pumping and saving water and energy loss.

The  Foot Valve or Bottom Valve, which is actually a kind of check valve and plays a role in preventing water backflow.

Foot Valve can be divided into plastic Foot Valve and metal Foot Valve according to the material, and can also be divided into ordinary Foot Valve and backwashing water Foot Valve.

Foot Valve are mainly used in mechanical equipment for slurry treatment such as pumps. Usually,Foot Valve are installed at the bottom of underwater suction pipes of pumps to prevent slurry backflow.

Foot  valve is equipped with multiple inlets on the valve cover and screen mesh to reduce the impurity inflow and the blockage probability of the Foot Valve. Although the Foot Valve is equipped with anti-clogging screen mesh, the bottom valve is generally suitable for cleaning media. The Foot Valve is not suitable for medium with excessive viscosity and granularity.

Lifting Performance Specification:

Nominal pressure: PN1.6MPa

Nominal Size: DN15-DN600

Applicable Medium: Water, Oil and Non-corrosive Medium

Flange Standard: ASME b16.5,JIS10K,DIN PN16

Test criteria: API 598

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