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Product Information
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 unfavourable 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.
Parts Specification
| Part Number | SIZE | MAXIMUM FLOW RATE (cu in/min) | MINIMUM PILOT PRESSURE (psi) | PILOT FLUID VOLUME (cu in) | PORT SIZE A & B | PORT SIZE Z | C (mm) | D (mm) | E (mm) | SW (mm) | WEIGHT (lbs) |
| CLR-2951-501 | High Capacity | 3360 | .38 x PA + 175 | .02 | 1/2 BSPP | 1/4 BSPP | 100 | 36.5 | 31 | 32 | 1.3 |
Warning:
This Product Can Expose You To Materials And/Or Chemicals Including Arsenic, Lead, And Other Materials And/Or Chemicals Which Are Known To The State Of California To Cause Cancer And/Or Reproductive Harm. For more information, visit www.P65Warnings.ca.gov