FGSV Series of Foot Valves are installed on the bottom of suction tubes in the fuel storage tank to maintain prime in suction system fuel lines. Double-poppet models provide redundant protection for holding the prime, and are ideal for installations where the valve is not easily accessible. FGSV Series of Foot Valves feature precision metal-to-metal sealing arrangements. FGSV Series of Foot Valves are recommended for use on suction lines where the pressure does not exceed 34 ft of head (approximately 15 psi). All FGSV Series of Foot Valves are pressured tested to ensure accuracy. Screen protects the valve from debris. 100% factory tested