In-Line Mounted
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7500 psi max
FEATURES: 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.
OPERATION: Flow from B –> A is free flow. Return flow from A –> B is locked until hydraulically unlocked by pressurizing the control port Z.
SIZES: Available in two sizes — see Dimensions page for part numbers:| | Standard capacity (920 cu.in./min flow rate) | | | High capacity (3360 cu.in./min flow rate) |
MOUNTING: 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.
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. |
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