JPS6453577U

JPS6453577U -

Info

Publication number: JPS6453577U
Application number: JP14899087U
Authority: JP
Priority date: 1987-09-28
Filing date: 1987-09-28
Publication date: 1989-04-03

Description

[Brief explanation of the drawing]

第１図は本考案弁座を用いた弁の概略を示す縦
断面図、第２図は弁座近辺を示す拡大断面図、第
３図は連通口部の他実施例を示す拡大断面図であ
る。１，２……弁箱、４……流体通路、５……弁体
、６……弁座、７……弁室、８……連通口、９…
…段部、１０……球体、１１……リリーフ穴又は
切欠溝、１２……スプリング。 Fig. 1 is a vertical sectional view schematically showing a valve using the valve seat of the present invention, Fig. 2 is an enlarged sectional view showing the vicinity of the valve seat, and Fig. 3 is an enlarged sectional view showing another embodiment of the communication port. be. 1, 2...Valve box, 4...Fluid passage, 5...Valve body, 6...Valve seat, 7...Valve chamber, 8...Communication port, 9...
... Stepped portion, 10 ... Sphere, 11 ... Relief hole or notch groove, 12 ... Spring.

Claims

[Scope of Claim for Utility Model Registration] (1) In a valve seat that seals between the valve chamber and the fluid passage, a communication port is provided from the valve chamber side to the valve body side, and this communication port is provided with a step to prevent the valve from forming a valve seat. The chamber side has a small diameter, the valve box side has a large diameter, and a sphere, cone, or other movable sealing piece that can seal the communication port from the large diameter side is inserted into the step part, and the fluid passage is connected from the end of the communication port on the valve box side. A valve seat with a function to prevent an increase in internal pressure by forming a communicating relief hole, notch groove, or other communication part. (2) A valve seat equipped with a function to prevent an increase in internal pressure as set forth in claim 1 of the utility model registration claim, in which the sphere inserted from the large diameter side is always urged by a spring against the stepped portion.