| 摘要 |
A pump control for use within a pump system and being connected to the discharge pipe therefor; there being a check valve between the pump control and the outlet pipe. Said control comprises a pipe having a plurality of openings which pipe connects said valve and a pressure switch in circuit controlling relationship with respect to the pump with a pressure accumulator disposed about said pipe and constituting a resilient sleeve having a thickness of about one-half inch and a durometer hardness within the range of 55 to 70.
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