| 摘要 |
1,272,889. Valves. NIBCO Inc. 23 July, 1970 [7 Aug., 1969], No. 35732/70. Heading F2V. A gate valve comprises a sliding disc closure 35 removably carried by a stem 24 extending through a bonnet 28 which is formed integrally with a valve body 10. A removable resilient seat 50 is held in the body by a removable pipe bushing 42 which forms one of two inlet and outlet connections. Means is provided for wedging the disc against the seat in closed position. As shown, the disc is connected to a screwed rising stem having a hand wheel 14. Surfaces 38 on the disc co-operate with wedge surfaces (39), Fig. 6 (not shown), on the body. The disc is assembled by insertion through the opening for the bushing 42. The seat 50 is of plastic such as P.T.F.E., nylon or the like. |
