Actuator valve

Details Actuator valve Actuator valve

F - Mech Eng,Light,Heat,Weapons

15

B

121/41

F15B 13/02 (2006.01) F01L 5/04 (2006.01) F04B 43/073 (2006.01)

Patent

CA 1234022

ACTUATOR VALVE Abstract An air driven diaphragm pump having an actuator valve (20) for converting a source of compressed air into a reciprocating drive. The actuator valve includes a valve piston (120) for alternately directing air to one side or the other of the pumps, a control rod (56) fixed to the reciprocating elements (28 and 30) of the pump and means for shifting the valve piston responsive to the position of the control rod. An axially spaced bifurcated inlet (110) is employed to provide additional energy to the shifting of the valve piston. The valve piston also is arranged to cover vent ports (90 and 92) as a mechanism for closing off all compressed air under stalled condi- tions of the pump.

458423

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