公开(公告)号：US3734458A

公开(公告)日：1973-05-22

申请号：US3734458D

申请日：1971-05-11

Applicant: KEROTEST MFG CORP

Inventor： TRICINI J ,  SCHMITT E

IPC: F16K3/12 ,  F16K31/50

CPC classification number: F16K3/12 ,  F16K31/508

Abstract: The gate valve has a body portion with coaxial inlet and outlet openings in the side walls and valve body chamber with opposed converging valve seats. A wedge member has a body portion with a depending wedge shaped gate portion that is movable vertically into a valve chamber within the body portion to control the flow of fluid through the valve body portion. A cover member is secured to the upper face of the valve body and has an elongated chamber communicating with the valve chamber in which the wedge member moves vertically. A guide pin and valve stem are positioned within a cover chamber in spaced parallel relation to each other and on opposite sides of the longitudinal axis of the gate portion of the wedge member. The wedge member body portion has a longitudinal passageway on one side of the gate portion through which the guide pin extends. The wedge member body portion has a second vertical threaded passageway on the other side of the wedge member gate portion through which the threaded valve stem extends. Rotation of the valve stem moves the wedge member vertically within the chamber of the cover in a manner that the gate portion of the wedge control the flow of fluid through the valve body chamber. The valve body, because of the offset stem configuration, is relatively short in length and may be positioned between closely adjacent pipe flanges.

Abstract translation: 闸阀具有在侧壁中具有同轴入口和出口的主体部分和具有相对的会聚阀座的阀体腔。 楔形构件具有主体部分，其具有垂直楔形门部分，其可垂直移动到主体部分内的阀室中，以控制通过阀体部分的流体流动。 盖构件固定到阀体的上表面，并且具有与阀室连通的细长室，楔形构件垂直移动。 引导销和阀杆定位在盖室内，彼此间隔开并且在楔形构件的门部分的纵向轴线的相对侧上。 楔形件主体部分具有在浇口部分的一侧上的纵向通道，导向销延伸穿过该纵向通道。 楔形件主体部分在楔形件门部分的另一侧上具有第二垂直螺纹通道，螺纹阀杆通过该通道延伸。 阀杆的旋转使得楔形构件在盖的腔室内垂直地移动，楔形件的门部分控制流体通过阀体腔室的流动。 由于偏置阀杆构造，阀体的长度相对较短，并且可以位于相邻的管凸缘之间。