About this item
Material: Made of aluminum alloy check valve,304 stainless steel spring,NBR rubber gasket and O-ring.
Size: 1/2inch (12mm) OD check valve can be work with 1/2 inch ID fuel hose. 
Parameter: Min upstream pressure:0.2bar(2.9psi),working pressure range: 0.2-6bar (2.9-87psi),operating temperature range: -22℉ to 266℉.
Medium: Applicable to water, petrol, diesel, gas, oil, air, and other fluids.(Methanol is not recommended)
Application: The fuel line check valve is widely uesd in vacuum system,carburetors and low pressure fuel systems.