B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
51/31, 251/93
B24B 15/02 (2006.01) F16K 51/00 (2006.01)
Patent
CA 1169411
ABSTRACT OF THE DISCLOSURE A valve structure is provided which can be opened and closed under operating conditions without any adjustment in conditions existing in the system in which the valve is an element. The valve element can be turned with respect to the seat to provide for proper relation between the valve element and the valve seat to grind one with respect to the other during the operating cycle. The valve also includes a clutch having a radial acting trip overload that prevents the valve seat from being damaged during grinding which is effected by turning the valve through the clutch while moving the valve toward the seat during the closing cycle and produces a con- trolled grinding operation independent of pressure within the valve. When the valve is operated in the opposite direction, the clutch disengages and the actuator mechanism encounters only the thrust forces during the opening cycle. This allows the valve to be easily opened without overloading the system.
399395
Anchor/darling Valve Company
Fetherstonhaugh & Co.
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