JPH0321115U

JPH0321115U -

Info

Publication number: JPH0321115U
Application number: JP8105289U
Authority: JP
Priority date: 1989-07-10
Filing date: 1989-07-10
Publication date: 1991-03-01
Anticipated expiration: 2004-07-10
Also published as: JPH0731291Y2

Description

[Brief explanation of drawings]

第１図は、本考案の減圧弁の一実施例の断面図
、第２図は、ピストンの一部断面図、第３図は、
他の実施例の断面図、第４図は、従来の技術を示
す断面図、第５図は、他の従来の技術を示す断面
図である。１……本体、２，３２……ピストン、３……ス
プリング、４……シリンダ、６……一次側通路、
７……二次側通路、１２……弁座、１３……ポペ
ツト、１４……ポペツト弁、１６……チエツクボ
ール、１７……弁座、１８……安全弁。 FIG. 1 is a sectional view of an embodiment of the pressure reducing valve of the present invention, FIG. 2 is a partial sectional view of the piston, and FIG.
FIG. 4 is a cross-sectional view of another embodiment, FIG. 4 is a cross-sectional view of a conventional technique, and FIG. 5 is a cross-sectional view of another conventional technique. 1... Body, 2, 32... Piston, 3... Spring, 4... Cylinder, 6... Primary side passage,
7...Secondary side passage, 12...Valve seat, 13...Poppet, 14...Poppet valve, 16...Check ball, 17...Valve seat, 18...Safety valve.

Claims

[Claims for Utility Model Registration] 1. In a pressure reducing valve that can arbitrarily set the pressure on the secondary side to be lower than the pressure on the primary side, the primary passage and the secondary side communicate with each other via a cylinder. A poppet valve comprising a main body having a passage, a piston fitted in the cylinder so as to be slidable in the axial direction, a poppet provided on the piston, and a valve seat of the cylinder corresponding to the poppet; The valve includes a spring that biases the piston toward a position where the primary side passage and the secondary side passage communicate with each other, and the pressure receiving area on the secondary side of the piston is made larger than the pressure receiving area on the primary side. The pressure receiving area of the primary side and the area of the valve seat of the cylinder are made equal in size, and the pressure set by the pressure receiving area difference and the spring acts on the secondary side. A pressure reducing valve characterized in that a piston is moved in the direction of the spring, and the poppet valve closes between the primary passage and the secondary passage. 2. A safety valve that is operated by the pressure on the secondary side, wherein the check ball is urged by the spring against the valve seat formed on the piston, and the pressure receiving surface is located between the primary side and the secondary side. The pressure reducing valve according to claim 1, wherein the pressure reducing valve is formed to have a predetermined area smaller than a pressure receiving area difference.