JPH0168514U

JPH0168514U -

Info

Publication number: JPH0168514U
Application number: JP1987164920U
Authority: JP
Priority date: 1987-10-28
Filing date: 1987-10-28
Publication date: 1989-05-02

Description

[Brief explanation of the drawing]

第１図は空気用リリーフ弁付き減圧弁の縦断正
面図、第２図は本考案による水用リリーフ弁付き
減圧弁の縦断正面図、第３図は同上の別の実施例
の縦断側面図である。図面符号の説明、Ａ……空気用減圧弁、Ｂ……
水用リリーフ弁付き減圧弁、ａ……貫通孔、ｂ…
…連通孔、Ｗ……一次側、Ｙ……二次側、１……
弁箱、１０……入口、１１……出口、１２……弁
室、１４……底蓋、２０……連通口、２１……弁
座、２２……減圧弁、２３……バランス弁、２４
……バランス室、２５……バランスピストン、２
６……弁棒、２７……バネ、３……感圧室、３０
……連通口、３１……感圧板、３２……バネ、３
３……バネケース、３４……調節ネジ、３５……
孔、４０……逃し口、４１……弁座、４２……逃
し弁用の弁、６０……放水管。 Fig. 1 is a longitudinal sectional front view of a pressure reducing valve with an air relief valve, Fig. 2 is a longitudinal sectional front view of a pressure reducing valve with a water relief valve according to the present invention, and Fig. 3 is a longitudinal sectional side view of another embodiment of the same. be. Explanation of drawing symbols, A... Air pressure reducing valve, B...
Pressure reducing valve with water relief valve, a...through hole, b...
...Communication hole, W...Primary side, Y...Secondary side, 1...
Valve box, 10... Inlet, 11... Outlet, 12... Valve chamber, 14... Bottom cover, 20... Communication port, 21... Valve seat, 22... Pressure reducing valve, 23... Balance valve, 24
... Balance chamber, 25 ... Balance piston, 2
6...Valve stem, 27...Spring, 3...Pressure sensitive chamber, 30
...Communication port, 31...Pressure sensitive plate, 32...Spring, 3
3...Spring case, 34...Adjustment screw, 35...
Hole, 40... Relief port, 41... Valve seat, 42... Valve for relief valve, 60... Water discharge pipe.

Claims

[Scope of utility model registration request]

A pressure reducing valve is provided in a valve chamber 12 in a valve box 1 having an inlet 10 and an outlet 11, and faces a valve seat 21 for a pressure reducing valve provided around a communication port 20 that communicates the valve chamber 12 with the secondary side Y. The valve 22 is provided to be movable up and down, and the balance piston 25 assembled to the pressure reducing valve 22 is fitted watertightly into the balance chamber 24 installed at the bottom of the valve chamber 12, and the upper end of the valve rod 26 is connected to the pressure reducing valve 22. The side is connected to a pressure-sensitive plate 31 that senses secondary pressure and operates up and down, and a relief port 40 and a valve seat 41 for the relief valve and a relief valve seat 41 are connected to the connection portion between the pressure-sensitive plate 31 and the valve stem 26. A valve 42 is provided, and the balance chamber 24
A pressure reducing valve with a water relief valve, characterized in that the secondary side Y and the primary side W are held watertight and are provided with a communication hole b communicating with the outside of the valve box 1.