Products

Location:Home>Products>Gas Industry>Gas reserve supporting valve series

Gas Industry
Gas reserve supporting valve series
Special valve series for gas transportation
Special valve series for gas pipeline network
Gas safety valve series
Chemical Industry
Ammonia valve series
Liquid chlorine valve series
Stainless steel valve series
Oxygen specific valve series
Gas reserve supporting valve

Pneumatic emergency shut-off valve for station QDQ421 F-25/40

Features

1. Applicable to gas pipelines for safety protection. In the delivery state, the valve is normally closed. When working, the gas source acts on the cylinder and the valve is open.
2. Adopting the principle of check valve, it can only be cut off in one di

Technical Parameters


Technical parameters:

Nominal pressure Mpa 2.5 4.0
Shell test pressure Mpa 3.75 6.0
Sealing test pressure Mpa 2.75 4.4
Applicable temperature -40℃- +50℃
Applicable media Liquefied petroleum gas, natural gas, liquid nitrogen, etc.
Flange Standard GB/T9113-2000
Manufacturing standards JB/T9094—1999
Emergency cut-off time ≤10-30秒
Melting temperature of fusible plug 75±5℃
Cylinder applicable medium Compressed air, nitrogen
Air source pressure Mpa 0.3-0.6

Main parts materials

Valve body Valve stem Valve disc spring Gasket Cylinder Sealing ring
WCB 20Cr13 ZG20Cr13 50CrVA ,1Cr18Ni9 PTFE 20# NBR

Station pneumatic emergency shut-off valve ODQ1421 F nominal pressure PN2.5MPa dimensions and connection dimensions

DN L D Dl D2 D3 Convex D4 concave b f Z-φd H
25 160 115 85 65 57 58 16 4 4-φ14 226
32 180 140 100 76 65 66 18 4 4-φ18 278
40 200 150 110 84 75 76 18 4 4-φ18 369

Station pneumatic emergency shut-off valve ODQ1421 F nominal pressure PN2.5MPa dimensions and connection dimensions

DN L D Dl D2 D3 Convex D4 concave b f Z-φd H
50 230 165 125 99 87 88 20 4 4-φ18 421
80 310 200 160 132 120 121 24 4 8-φ18 523
100 350 235 190 156 149 150 24 4.5 8-φ22 548
125 400 270 220 184 175 176 26 4.5 8-φ26 468

Station pneumatic emergency shut-off valve ODQ1421 F nominal pressure PN2.5MPa dimensions and connection dimensions

DN L D Dl D2 D3 Convex D4 concave b f Z-φd H1 H2
150 444 300 250 211 203 204 28 4.5 8-φ26 730 353
200 533 360 310 274 259 260 30 4.5 12-φ26 850 410
250 622 425 370 330 312 313 32 4.5 12-φ30 899 441


A PHP Error was encountered

Severity: Core Warning

Message: PHP Startup: Invalid library (appears to be a Zend Extension, try loading using zend_extension=php_opcache.dll from php.ini)

Filename: Unknown

Line Number: 0

Backtrace: