The Flomatic 4766 3" 63 cast-iron foot valve is a spring-assisted suction line valve designed to help maintain pump prime and reduce backflow in general water and irrigation systems. It features an epoxy-coated cast iron body, a Nitrile (Buna-N) seal, a stainless-steel spring, a heavy-duty polyethylene strainer, and size-dependent guide and poppet materials for optimal performance. It is rated for a maximum working pressure of 250 psi and a maximum temperature of 180°F (80°C).

Specifications:

Max Pressure: 250 psi

Max Temperature: 180°F (80°C)

Body: Epoxy-coated cast iron

Guide: Ductile iron

Poppet: Ductile iron

Seal: Nitrile (Buna-N)

Spring: Stainless-steel

Strainer: Heavy-duty polyethylene strainer

Connection: 3" FNPT threaded (ANSI B1.20.1)

Weight: 9 lbs

Operation: Model 63 Foot valves are installed at the end of a suction line to help maintain pump prime and prevent reverse flow when the pump stops. The internal spring-loaded poppet opens under forward flow and closes quickly as flow reverses, helping to minimize backflow and loss of suction.

Construction: An epoxy-coated cast iron body provides strength and corrosion protection, while the internal poppet, guide, and spring are selected by size to balance durability and hydraulic performance. The heavy-duty strainer offers a large open area to reduce head loss while helping to keep larger debris out of the suction piping. FNPT threaded ends simplify installation into standard threaded piping systems.

Applications: General water distribution, irrigation, and light municipal or commercial pumping systems where a durable cast-iron foot valve is needed to help maintain prime, reduce backflow, and protect the pump from debris.

3" model uses a ductile iron poppet and guide.