Foot Valve

FUXEON® as a professional manufacturer,Normally, a foot valve operates automatically, allowing only unidirectional flow of the medium and preventing reverse flow. When fluid pressure flows in one direction, the valve disc opens; when fluid flows in the opposite direction, the fluid pressure and the weight of the valve disc act on the valve seat, thus cutting off fluid flow. It is mainly used in pipelines where the medium flows in one direction only, allowing only unidirectional flow to prevent accidents.

Parameters:

The working principle of a ductile iron foot check valve:

When the water pump starts: the valve disc opens under negative pressure, and liquid is drawn into the pipe.

When the water pump stops: the valve disc closes under the action of gravity or spring force, preventing liquid backflow and keeping the suction pipe full of liquid.

Main types of foot check valves: According to design, they can be divided into single-disc foot valves that rely on the weight of the valve disc for sealing and double-disc foot valves that have good sealing performance and are suitable for high head or corrosive media. According to connection method, they can be divided into flange connection, threaded connection, and welding.

Application scenarios:

Bottom valves can be used in centrifugal pump systems to ensure normal self-priming (e.g., farmland irrigation, fire fighting systems). Bottom valves can also be used in tank trucks/storage tanks to prevent media backflow.

FAQ

Q1: Main application scenarios

A: Widely used in water pumps, water supply and drainage, agricultural irrigation, industrial water treatment, fire water supply systems, wells, reservoirs and sewage suction pipelines.

Q2: What are its structural advantages?

A: Compact integrated design with bottom filter screen. Simple structure, flexible opening and closing, low flow resistance, stable one-way sealing performance, easy installation and low maintenance cost.

Q3: What specifications and pressure grades are provided?

A: Complete DN sizes from DN25 to DN300. PN10 and PN16 pressure levels are standard. Threaded and flanged connection types are optional to match different pipe systems.

Q4: How to install and maintain correctly?

A: Install vertically at the lowest end of the suction pipe with the filter facing down. Regularly clean the strainer to prevent blockage, and check the sealing parts regularly to ensure no water leakage and backflow.