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1. (WO2018036267) MANUAL PISTON VALVE APPARATUS CAPABLE OF RESPECTIVELY SEALING UPPER AND LOWER VALVE SEAT

Pub. No.:    WO/2018/036267    International Application No.:    PCT/CN2017/090700
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Fri Jun 30 01:59:59 CEST 2017
IPC: F16K 5/16
F16K 5/02
F16K 31/60
Applicants: SAILUOKE FLUID EQUIPMENT INC
赛洛克流体设备成都有限公司
Inventors: FU, Zhengkai
付正凯
Title: MANUAL PISTON VALVE APPARATUS CAPABLE OF RESPECTIVELY SEALING UPPER AND LOWER VALVE SEAT
Abstract:
A manual piston valve apparatus capable of respectively sealing an upper and lower valve seat, comprising a handle (1), a support frame (3), a valve rod (4), a valve body (5), and a flow channel (10), and also comprising a push rod (2) and a valve seat (6), the push rod being connected to the support frame by means of a screw thread structure; guidance and stability are good, and the valve seat uses PEEK material; a flow channel hole (7), an attenuating groove (8), and a plug hole (9) are arranged on the valve seat, the flow channel hole being disposed in the valve seat along the axial direction of the flow channel, the plug hole being disposed along the axial direction of the valve rod, and the attenuating groove being disposed in a direction perpendicular to the flow channel hole and the plug hole; the valve seat enables the valve operating torque to be reduced and the valve seat parts above and below the flow channel hole can be sealed respectively with the valve body; valve stability is high and guidance is good.