Foot Valve: Installed on the bottom of suction tubes in the fuel storage tank to maintain prime in suction system fuel lines. Sv80 Series Foot Valve1) Valve closing speed: 0.5s2) Medium: gasoline, diesel and kerosene3) Operating temperature: -30~+55o4) Ordering specifications: a) SV-40: BSP11/2", NPT11/2", double, 1.6kg b) SV-50: BSP2", NPT2", double, 2.4kg c) SV-80: BSP3", NPT3", double, 5kg5) ...