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    Pilot-Operated Check Valves (In-Line Mounted)

    Pilot-Operated Check Valves (In-Line Mounted)

    Power Workholding

    7250 psi max
    Holds clamping pressure until released by a separate pilot pressure line (allows only one-way flow until released). Can be used as a safety device in case the fluid line to the fixture could become damaged. Can also be used to prevent workpieces from floating between opposing clamps. Leakage-free valve design with spring-loaded ball seat. The version shown here is used for in-line mounting with standard fittings and exposed fluid lines. Also available in a manifold-mounted version.

    Available in two sizes:
    Standard capacity (920 cu.in./min flow rate)
    High capacity (3360 cu.in./min flow rate)

    Operation

    Flow from B –> A is free flow. Return flow from A –> B is locked until hydraulically unlocked by pressurizing the control port Z.

    Design Considerations

    Pilot-Operated Check Valves are not suitable for locking double-acting swing clamps (pull-type cylinders). Due to the unfavorable surface-area ratio of these elements, the control pressure is not sufficient for unlocking and dangerous pressure intensification can occur.

    Mounting & Fluid Supply

    Mount in-line, in any position, horizontal or vertical. Three 1/4" BSPP ports (A and B ports are 1/2" BSPP on high-capacity version). Do not use NPT fittings.

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    CHECK VALVE, PILOT OPERATED, CONNECTION SIZE G1/2, CONTROL PORT G1/4, 500 bar CL-CLR-2951-501-V

    SKU: CL-CLR-2951-501-V
    MPN: CLR-2951-501-V
    Email Sales for Pricing
    Holds clamping pressure until released by a separate pilot pressure line (allows only one-way flow until released). Can be used as a safety device in case the fluid line to the fixture could become damaged. Can also be used to prevent workpieces from floating between opposing clamps. Leakage-free valve design with spring-loaded ball seat. The version shown here is used for in-line mounting with standard fittings and exposed fluid lines. Also available in a manifold-mounted version.

    PILOT-OPERATED CHECK VALVE CL-CLR-2951-417-V

    SKU: CL-CLR-2951-417-V
    MPN: CLR-2951-417-V
    Email Sales for Pricing
    Holds clamping pressure until released by a separate pilot pressure line (allows only one-way flow until released). Can be used as a safety device in case the fluid line to the fixture could become damaged. Can also be used to prevent workpieces from floating between opposing clamps. Leakage-free valve design with spring-loaded ball seat. The version shown here is used for in-line mounting with standard fittings and exposed fluid lines. Also available in a manifold-mounted version.

    Pilot-Operated Check Valves (In-Line Mounted)