Pneumatic Emergency Shut-off Valve

1, uses and performance specifications:
This valve is a security valve, installed in the liquefied petroleum gas (gas), liquid and gas pipeline, and supporting the use of remote gas sources, using gas source control valve to open - close to the pipe or tank on large leak or fire occurs, the rapid manual to gas source, pressure relief, or high-temperature ≥ 75%% p5C%% D when the fusible alloy melts, and the cylinder automatic pressure relief valve fast closure of Stop-leak, from a security role.
Second, the working principle of electronic control
The source of imported gas valve installed by a two way magnet valve, the valve using the remote control electrical switch console.
1. Gas leak alarm alarm power, power exhaust valve, the valve automatically closes.
2. Manual control solenoid valve (press the red clamp) exhaust valve closes automatically.
3: The main performance specifications

Working pressure rating 2.5/4.0Mpa cylinder pressure ≤ 2.0Mpa
Operating temperature -40 ~ +80 ℃ water cylinder using the medium of air nitrogen `
Use medium natural gas, liquefied petroleum gas, melting closed time ± 70 ℃
Closing time ≤ 5 seconds to open the cylinder pressure ≥ 0.5-0.7Mpa
4: Main parts materials

Part Name Material
Valve body carbon steel valve cover
Cylinder, piston cast iron
Seals, O-Chuan PTFE, NBR
Spring 50CrVA (spring steel)
Pneumatic emergency shut-off valve installed according to size

DN-JIS L maximum flow rate: l / min Max.FIoW / min
mm in
251 "160 160
32 1-1/4 "200 400
40 1-1/2 "200 400
50 2 "240 640
803 "2831600
1004 "3052500
1506 "4033300
2008 "5025900