Inline Check Valves Seetru BSPP Male X Female Check Valve For Plumbing Systems Pneumatics INLINE CHECK VALVES Trausch Dynamics Amazon.com: GASHER Brass Check Valve 3 4" Female to 3 4" Male Fusan Female to Male Brass Spring Vertical Check Valve China Check Inline Check Valves Cryo Order. Vibrant Performance check valves are lightweight and constructed entirely from 6061 aluminum alloy. Vibrant Performance check valves are designed to prevent flow back of all varieties of fuel, oil or coolant and will stand up to the most rigorous operating environments. and are capable of handling temperatures ranging from 30deg F to 400deg F and operating pressures up to 300psi. All Vibrant Performance check valves are available in anodized black only