| 摘要 |
A solenoid actuated air control valve and a plurality of liquid distribution pumps are mounted on a common elongated manifold having passages for supplying pressurized air and lubricating fluid to the pumps in response to actuation of the solenoid valve. Each of the distribution pumps has an air actuated reciprocating piston, and lubricating fluid is supplied to the manifold and distribution pumps through a line connected to a supply pump also having an air actuated reciprocating diaphragm or piston. The solenoid valve controls the supply pump in timed relation with the distribution pumps, and the supply pump is located within an annular filter unit submerged within a reservoir of lubricating fluid. Each distribution pump is connected by a flexible line to a corresponding spray nozzle having a check valve including a tubular plastic insert which confines a spring bias ball and a resilient annular seat for the ball.
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