Foot Valve-brass 1-1/4 No Lead

Foot valves are also referred to as one-way or non-return valves. Foot valves are commonly used with well pumps, in storage tanks, irrigation systems, pools, ponds, reservoirs, or anywhere a suction pump is used. Their purpose is to prevent reverse flow and maintain system pressure in pressurized pumping systems, they are installed on the end of the suction line of any suction pump. The foot valve not only prevents fluid / water from flowing backward when the pump is off, the valve also keeps the fluid trapped in the suction pipe when the pump stops, sustaining the prime for the pump, and preventing pump burnout. Foot valves work automatically, opened by the pump's suction pulling the valve poppet open against a low tension spring, normally ½ PSI or less cracking pressure (cracking pressure is the pressure it takes to open the valve). When the pump stops the valve starts closing automatically with assistance of the spring as the flow slows, and is completely sealed before it comes to a full stop. This eliminates flow reversal which would cause the poppet to slam against the seat causing hydraulic shock or water hammer. Without a foot valve gravity would cause the water or fluid to flow in the reverse direction resulting in the loss of prime and system pressure.