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公开(公告)号:US3867961A
公开(公告)日:1975-02-25
申请号:US41661373
申请日:1973-11-16
Applicant: CALGON CORP
Inventor: RUDELICK JOHN
IPC: C02F1/00 , C02F1/42 , F16K11/02 , F16K11/065 , F16K31/383 , F16K11/07
CPC classification number: F16K31/383 , C02F1/42 , F16K11/065 , Y10T137/86726
Abstract: A two position spool type control valve wherein a single pilot valve governs operation of a hydraulic actuator for the valve spool and also controls communication of a drain port with one of a pair of tank ports in the valve body.
Abstract translation: 一种双位阀芯型控制阀,其中单个先导阀控制用于阀芯的液压致动器的操作,并且还控制排出口与阀体中的一对罐口中的一个的连通。