| 摘要 |
A purge drain valve (100) including a spool (105) spliced in a fluid line includes a control valve (115) and an actuator (120) coupled to the control valve (115) for regulating fluid flow. During a washing operation, fluid flows between a supply end (106) and a delivery end (107) of the spool (105), and during a purging operation, the control valve (115) diverts fluid entering the supply end (106) from the delivery end (107) towards a drain leg (108). A washing system includes a fluid supply (225) coupled to an input of a wash delivery system (205) and a delivery line (210) coupled to an output of the wash delivery system (205). The purge drain may be spliced into the delivery line (210) to permit fluid to reach a wash apparatus (215) during a washing operation and to prevent fluid from reaching the wash apparatus (215) during a purging operation. A rinse cycle sensor apparatus (300) may be employed to indicate to an operator if a washing operation is complete based upon a conductivity of fluid exiting from a device being washed.
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