Check Valves

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• Product Code: Check Valves

Check Valves

(O-Ring & Ball Type)

Medium Pressure - Pressures to 20,000 psi (1379 bar)

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 800°F (425°C).  Ball and poppet are an integral design to assure positive, in-line seating without “chatter”. Poppet is designed for axial flow with minimum pressure drop.  

Cracking Pressure: 20 psi (1.38 bar) +/- 30% No optional cracking pressures available.

Temperature Range:

With All-Metal components, valve can be used to 800°F (425°C). Minimum standard operating temperature is -110°F (-79°C). For Low Temperature operation to -423°F (-252°C) use suffix “-LT" (Low Temp Spring)

Excess Flow Valves

Medium Pressure - Pressures to 20,000 psi (1379 bar)

Protects pressure gauges and pressure instrumentation from sudden surges in flow or venting in the event of line failure.

Vertical Installation: Since this type of check valve employs a non-spring loaded ball, valve MUST be installed in VERTICAL position with arrow on valve body pointing UP. (cover gland up).

Resetting Valve: Equalize the pressure across the ball. The ball will drop and reset automatically. Note: when in checked position, a small flow is permitted through the valve. See dimension chart on next page for checked flow rates).

Temperature Range:

With All-Metal components, Excess Flow Valve can be used from -423° to 800°F (-252° to 425°C).

Check Valves

(O-Ring & Ball Type)

High Pressure - Pressures to 60,000 psi (4140 bar)

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 1200°F (649°C). Ball and poppet are an integral design to assure positive, in-line seating without “chatter”. Poppet is designed essentially for axial flow with minimum pressure drop.

Cracking Pressure*: 20 psi (1.38 bar) +/- 30% No optional cracking pressures available.

Temperature Range: With All-Metal components, valve can be used to 800°F (425°C). Minimum standard operating tempera­ture is -110°F (-79°C). For Low Temperature operation to -423°F (-252°C) use suffix “-LT” (Low Temp Spring)

Excess Flow Valves

High Pressure - Pressures to 60,000 psi (4140 bar)

Protects pressure gauges and pressure instrumentation from sudden surges in flow or venting in the event of line failure.

Vertical Installation: Since this type of check valve em­ploys a non-spring loaded ball, valve MUST be installed in VERTICAL position with arrow on valve body pointing UP. (cover gland up).

Resetting Valve: Equalize the pressure across the ball. The ball will drop and reset automatically. Note: when in checked po­sition, a small flow is permitted through the valve. See dimension chart on next page for checked flow rates).

Temperature Range: With All-Metal components, Excess Flow Valve can be used from -423° to 800°F (-252° to 425°C).