Hydraulic compression tool having improved relief/release valve

Details Hydraulic compression tool having improved relief/release valve Hydraulic compression tool having improved relief/release valve

B - Operations, Transporting

30

B

26/39, 138/79.12

B30B 15/22 (2006.01) B21F 15/06 (2006.01) B25B 27/14 (2006.01) B25B 33/00 (2006.01) B25F 5/00 (2006.01) H01R 43/042 (2006.01)

Patent

CA 2012802

A valve for use in a hydraulic compression tool. The valve has a frame with a central chamber, a first inlet, a second inlet and a discharged outlet. A first gate is located at the first inlet. A plunger assembly having a first plunger member and a second plunger member are movably mounted in the central chamber with a spring biasing the plunger member against the second plunger member. The second plunger member has a conduit between the second inlet and the first plunger member. The valve has a first home position that substantially prevents fluid from flowing therethrough. The valve has a second manual release position wherein fluid can flow into the first inlet and out the discharge outlet. The valve also has a third automatic relief position such that in the event a predetermined maximum fluid pressure is exceeded a gate will open between the first plunger and the second plunger member to allow fluid to flow from the second inlet through the valve and out the discharge outlet.

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