Foot Valve
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Foot Valve Manufacturer in USA SVR Global manufactures foot valves engineered for pump suction lines across heavy industrial applications. Each valve is built to maintain pump prime, prevent backflow, and keep suction systems running without interruption. How a Foot Valve Works? Foot valve is placed below the bottom of the pump suction pipe, in the liquid source (tank, sump, well, or reservoir). Operation of the pump creates suction pressure in the pipe. As a result, the internal poppet, ball, or disc lifts off the seat. When the seat is opened, the liquid can pass through the valve body and enter the suction pipe to the pump. There is a strainer installed around the inlet that keeps the debris, sediment, or solid particles away from the pump impeller. The pump is turned off, and the suction pressure becomes zero. As a result of the gravity action (or the spring action in some designs), the poppet, ball, or disc is pressed back on the seat. The seat closes and stops the flow of liquid back to the liquid source. The suction pipe and pump casing will be filled with liquid. The next operation of the pump is performed right away without any priming and air entrainment. Industry and Applications of Foot valve: Industry Application Oil and Gas Suction side flow control on transfer pumps, tank farms, and pipeline booster stations Water and Wastewater Treatment Intake protection on raw water pumps, lift stations, and treatment plant suction lines Power Generation Cooling water intake and boiler feedwater suction systems in thermal and combined cycle plants Marine and Shipbuilding Ballast, bilge, and seawater intake lines on vessels and offshore platforms Chemical and Petrochemical Processing Suction protection for corrosive or hazardous liquid transfer pumps Mining and Mineral Processing Slurry and dewatering pump suction lines exposed to abrasive particulates Fire Protection Systems Suction lines drawing from open water sources such as reservoirs, tanks, and ponds for fire pump systems Materials and Construction: Cast iron - general purpose suction lines with moderate pressure demands Carbon steel - higher pressure and temperature applications Stainless steel (304/316) - corrosive fluids and marine or chemical environments Bronze - water intake lines requiring good corrosion resistance Duplex and super duplex alloys - aggressive or high chlorine fluid conditions Internal trim (disc, poppet, or ball) available in matching or upgraded material grade for extended wear life Seats built for tight shutoff and repeated open close cycling Strainer/screen constructed for the same material class as the valve body, sized to the debris load expected at the intake point Body and trim combinations selected based on fluid type, temperature range, and corrosion exposure Standards and Certifications: Designed to ANSI/ASME dimensional and pressure class standards Manufactured in line with API standards for suction and check valve construction Available to BS/EN dimensional and pressure rating standards for international projects Face to face dimensions built to match existing piping layouts without modification Pressure classes aligned to project specification, from low pressure intake lines to higher rated suction systems End connections (flanged or threaded) built to standard bolt patterns and thread specifications Material test certificates and inspection documentation available per project requirement Hydrostatic and functional testing carried out before dispatch Benefits of Using a Foot Valve: Keeps the suction pipe and pump casing primed, so the pump doesn't need re-priming at each startup Protects the pump impeller from debris and sediment through the integrated strainer Reduces the risk of water hammer caused by sudden backflow Maintains consistent suction pressure for stable pump performance Lowers pump wear and maintenance frequency by preventing dry running at startup Supports continuous operation in systems with frequent start stop cycles Reduces downtime associated with re-priming and air lock issues in the suction lin
Foot Valve Body: Cast Iron, Ductile Iron, SS304, SS316 Disc: Carbon Steel, Stainless Steel, SS304, SS316 Seat: F304, F316 Mesh: SS304 Nominal Size: DN50 to DN300 Nominal Pressure: PN16, Class150 Dimensions Unit: mm DN D D1 D2 b-f z-*d hO
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