Abstract: A lockout valve comprises a body with an inlet passage and an outlet passage which define a longitudinally-extending flow path through the body. A flow interrupter device, or slide, is mounted for transverse movement within the body. The slide can be located in a closed position, whereby fluid is prevented from flowing from the inlet passage to the outlet passage, but fluid downstream of the lockout valve is allowed to vent to atmosphere; to an intermediate bleed position, whereby restricted fluid flow is allowed from the inlet passage to the outlet passage through a bleed aperture; and to a fully open position whereby fluid is allowed to flow substantially unimpeded through a flow aperture from the inlet passage to the outlet passage. A latch normally prevents the slide from moving from the bleed position to the open position while fluid pressure rises across the lockout valve. The latch can be manually manipulated to allow the slide to be moved to the open position.

Abstract: A solenoid actuated pneumatic valve (50) has a valve body (52). The valve includes an inlet (60), a first outlet (62) and a second outlet (64). The body has a first internal chamber (66) and a second internal chamber (68). The first and second chambers are connected through a first opening (80). The body also includes a third chamber (76) connected to the first chamber through a second fluid opening (84). A stem (88) extends through the first, second and third chambers and is coaxial with the first and second fluid openings. A first poppet diaphragm (112) is mounted on the stem in the second chamber. The poppet diaphragm includes a face (118) sized for blocking the first opening, and a convoluted web portion (120) which extends radially outward and attaches to the valve body. A second poppet diaphragm (130) is mounted on the stem in the third chamber. The second diaphragm has a face sized for blocking the fluid opening between the first and third chambers.

Abstract: A fluid motor and a combination bumper and sealing ring therefor in which the ring is of rubber-like material with a sealing portion to seal the joint between the cylinder and an end cap and with a bumper portion to cushion the piston at the end of its stroke. The sealing portion is axially spaced from portions of the end cap and there is a recess between the sealing portion and bumper portion to prevent the sealing portion from being deformed when the bumper portion is deformed by contact with the piston.