RQZ-※/※ Gas Safety Shut-Off Valve
       
 

2 Application
RQZ series gas safety shut-off valve is applied to gas transmission and distribution system for emergency shut-off. When the system pressure is higher than the shut-off valve’s set value, the shut-off valve will cut off the gas supply so as to assure the gas safety. It is applicable for natural gas, artificial coal gas and liquefied petroleum gas（LPG）.

  
       
 
       
 

2 Main Technical Parameters
Inlet Pressure Rank(P1): ≤4.0MPa
Outlet Pressure Rank(P2): 0.001～1.2MPa(five degrees)
Accuracy: ±5%
Reaction Time: ≤1s
Working Temperature(t): -20～60℃
Caliber: DN50, DN80, DN100, DN150
Flange Pressure Class: PN1.6MPa, PN2.5MPa, PN4.0MPa

2 Features
★ High accuracy and fast response
★ It needs no external because of the pipe networks’ pressure
★ Low requirement for the cleanliness of the media makes it able to work normally in dirty gas media
★ Easy in installation and shakedown, convenient in operation and maintenance

  
       
　Main Technical Parameters

Operation Pressure Code

1

2

3

4

    5

Pressure Rank(kPa)

＜10

10-300

300-600

600-900

900-1200

Nominal Diameter Code

    1

    2

    3

    4

    5

Nominal Diameter(mm)

    20

    50

    80

    100

    150

　Dimension (Unit: mm)

Code
Model

L1

L

H

H1

RQZ-50

332

255

255

340

RQZ-80

359

300

300

360

RQZ-100

386

352

352

400

RQZ-150

436

451

451

440
 
 
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