Hikelok O-Ring check valves with coned-and-threaded connection type. Provide unidirectional flow and tight shut-off for liquids and gases with high reliability. When differential drops below cracking pressure, valve shuts off. Hikelok Ball check valves prevent reverse flow where leak-tight shut-off is not mandatory. When differential drops below cracking pressure, valve closes.With all-metal components, valve can be used up to 650°F(343°C).
Features

• Viton (FKM) O-ring: 0° to 400°F (-18° to 204°C)
• Buna-N O-ring: 0° to 250°F (-18° to 121°C)
• FFKM O-ring: 30° to 500°F (-18° to 260°C)
• PTFE O-ring: -100° to 400°F (-73° to 204°C)
• PTFE O-ring with Low Temp Spring: to -100°F (-73°C)
• Ball and poppet are an integral design to assure positive,in-line seating. Poppet is designed essentially for axial flow with minimum pressure drop