Parker Hannifin Corp.'s cartridge poppet check valves allow free flow in one direction while preventing flow in the reverse direction. These valves feature low pressure drop capability for systems up to 420 bar, and aredesigned for minimal leakage of less than 3 drops per minute. The company's 2:1 flow path cartridge poppet check valves feature side to nose design and all zinc-plated external parts.

Swagelok's spring-and-poppet check valves and bonded-poppet check valves are available with fixed cracking pressure, and feature stainless steel or brass construction. All the poppet valves feature working pressure up to 3000 psig or 6000 psig, operating temperature of -50 to 400F or -50 to 375F, and nominal cracking pressure of 1/3 to 25 psi or 3 to 50 psi.

ACI Services Inc. distributes Accu-Guide poppet valves that feature a head-to-stem cross-section for higher speed and differential pressure applications. The valves' head and seat profile are designed to streamline gas flow past the open valve.