Used for emergency shut-off valve pneumatic ammonia

A, use and performance specification:

This valve is a safety protective valve, installed in the liquefied petroleum gas (gas),liquid and gas pipeline, and supporting the use of long distance gas source, the use of gas control valve open close, so that occurs in a pipe or tank large leak even when the fire started, the fast manual so that the gas source pressure relief, or high temperature is greater than or equal to 75%%p5C%%D when the fusible alloy melts,while the cylinder automatic pressure relief, rapid closure of the valve and the leakage stopping, play the role of security protection.

The working principle, control two

The valve air entrance installed by a two position three way electromagnetic valve,electrical appliances using a remote console control valve switch.

1 gas leak alarm alarm energized, solenoid valve exhaust, the valve is automatically closed.

2 manual control solenoid valve (press the red clip) exhaust, the valve is automatically closed.

Three: the main performance specifications

The pressure cylinder working pressure rating of 2.5/4.0Mpa is less than or equal to 2.0Mpa

Using the temperature of -40~+80 DEG C cylinder using the medium nitrogen ` dry air

Using the medium of natural gas, liquefied gas, the closing time of plus or minus 70 DEG C melting

Closing time less than 5 seconds to open the cylinder pressure is greater than or equal to 0.5-0.7Mpa

Four main parts: material

Parts name material

The valve body valve cover of carbon steels

Cylinder, piston nodular cast iron

O type sealing ring, Sichuan PTFE, NBR

Spring 50CrVA (Dan Huanggang)

Pneumatic emergency cut off valve installation size

The maximum flow DN-JIS L: L / Max.FIoW/min

Mm in

251 "160160

32 1-1/4 "200400

40 1-1/2 "200400

502 "240640

803 "2831600

1004 "3052500

1506 "4033300

2008 "5025900