JPS63139610U - - Google Patents
Info
- Publication number
- JPS63139610U JPS63139610U JP3172487U JP3172487U JPS63139610U JP S63139610 U JPS63139610 U JP S63139610U JP 3172487 U JP3172487 U JP 3172487U JP 3172487 U JP3172487 U JP 3172487U JP S63139610 U JPS63139610 U JP S63139610U
- Authority
- JP
- Japan
- Prior art keywords
- piston
- check
- valve
- valve port
- sealing surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012856 packing Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims 1
Landscapes
- Control Of Fluid Pressure (AREA)
Description
第１図は本考案の一実施例を示す縦断面図であ
り、第２図は本考案の他の実施例を示す縦断面図
である。
１……弁箱、２……流入口、３……流出口、４
……弁口、５……密封面、６……シリンダ壁、１
０……環状パツキン、１１……ピストン、１２…
…細径部、１３……小径環状パツキン、１５……
減圧ばね、１６……逆止弁体、１７……逆止ばね
、１８……逆止パツキン。
FIG. 1 is a longitudinal cross-sectional view showing one embodiment of the present invention, and FIG. 2 is a longitudinal cross-sectional view showing another embodiment of the present invention. 1... Valve box, 2... Inlet, 3... Outlet, 4
... Valve port, 5 ... Sealing surface, 6 ... Cylinder wall, 1
0... Annular packing, 11... Piston, 12...
...Small diameter part, 13...Small diameter annular packing, 15...
Pressure reducing spring, 16... Check valve body, 17... Check spring, 18... Check packing.
Claims (1)
よび密封面を、流入口を介して上記弁口と反対側
にシリンダ壁を、それぞれ同一軸心上にもうける
弁箱と、上記シリンダ壁を摺動する環状パツキン
を装着し、上記弁口内方に突出する細径部を有す
るピストンと、上記細径部に間に小径環状パツキ
ンを介して摺動自在に装着され、上記密封面に密
着して弁口を閉塞する逆止パツキンを有する逆止
弁体と、上記逆止弁体を密封面に押圧せしめる逆
止ばねと、ピストンに逆止ばねの押圧方向と反対
方向に押圧力を与える減圧ばねとを備えた逆流防
止型減圧弁。 A valve box having a valve port and a sealing surface in the middle of a flow path from an inlet to an outlet, and a cylinder wall on the opposite side of the valve port via the inlet, respectively, on the same axis, and the cylinder wall. A piston is fitted with an annular packing that slides on the piston, and has a small-diameter portion protruding inward from the valve port, and a piston is slidably attached to the small-diameter portion with a small-diameter annular packing interposed between the piston and the piston, which tightly contacts the sealing surface. a check valve body having a check packing that closes the valve port; a check spring that presses the check valve body against a sealing surface; and a check spring that applies a pressing force to the piston in a direction opposite to the pressing direction of the check spring. A backflow prevention type pressure reducing valve equipped with a pressure reducing spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987031724U JP2513891Y2 (en) | 1987-03-04 | 1987-03-04 | Backflow prevention type pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987031724U JP2513891Y2 (en) | 1987-03-04 | 1987-03-04 | Backflow prevention type pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63139610U true JPS63139610U (en) | 1988-09-14 |
| JP2513891Y2 JP2513891Y2 (en) | 1996-10-09 |
Family
ID=30837724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987031724U Expired - Lifetime JP2513891Y2 (en) | 1987-03-04 | 1987-03-04 | Backflow prevention type pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2513891Y2 (en) |
-
1987
- 1987-03-04 JP JP1987031724U patent/JP2513891Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2513891Y2 (en) | 1996-10-09 |
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