| 摘要 |
<p>A pneumatic cartridge valve has supply inlet (54) and consumer outlet (66) passages provided on the end face of a valve cylinder (6), and a control knob (98) by rotation of which either the flow of air to exhaust or the passage of air from the supply to the consumer may be adjusted. The valve comprises a valve body (8) in the valve cylinder (6), and a valve piston (10) movable in the valve body, which supports two identical sealing heads (16, 22) and associated spacers (36, 38). The sealing heads and spacers can be readily assembled in the valve body on a piston rod (12) to provide either a normally open or a normally closed valve. <IMAGE></p> |
