Ammonia pneumatic cut-off valve

The ammonia pneumatic cut-off valve is installed on the liquid ammonia storage tank station and gas pipeline, and is used in conjunction with the hand-operated oil pump. It uses manual hydraulic pressure to control the valve opening and closing, so that in case of leakage or even fire on the pipeline or storage tank, the staff can quickly and manually relieve the pressure of the hand-operated oil pump from a distance

　　Ammonia pneumatic cut-off valveProduct Overview:

　　Ammonia pneumatic cut-off valveInstalled on the liquid ammonia storage tank station and gas pipeline, it is used in conjunction with a hand-operated oil pump to control valve opening and closing using manual hydraulic pressure. This allows personnel to quickly and remotely release pressure from the hand-operated oil pump in case of leakage or even fire on the pipeline or storage tank, or melt the (melting alloy) at a high temperature of 80 ℃. The valve body and oil cylinder automatically release pressure, and the valve quickly closes to prevent leakage, providing safety protection.

Working principle of ammonia valve dual oil pump control multi valve:

The installation of multiple ammonia valves in pipelines should be controlled by two hand-operated oil pumps, with one pump in operation and the other as a backup to prevent damage to the oil pump. Each emergency shut-off valve should be controlled by a needle valve. So that the pipeline maintenance can be closed without affecting the normal operation of other valves

The cut-off valve is a combination of the advantages of globe valves, check valves, and hydraulic valves in our company. It adopts the lifting structure of globe valves and the principle of check valves to prevent medium backflow. Has technical performance, low load loss, and high reliability. The main control is to cut off, connect or switch the fluid inside the process pipeline. It can be widely applied in industrial production sectors such as petroleum, chemical, and metallurgical industries. It is currently the ideal valve for gas and liquid hazardous materials.

Main performance specifications:

Pressure rating: 20K 4.0MPa

Working pressure of oil cylinder: ≤ 6.0.Mpa

Operating temperature: -40~+80 ℃

Oil cylinder medium: mixed spindle oil, transformer oil

Media used: natural gas, liquefied gas, liquid ammonia, gas, liquid

Melting time ± 70 ℃

Closing time: ≤ 10 seconds

Oil cylinder opening pressure: ≥ 2.0MPa

Sealing ring, O-ring: polytetrafluoroethylene, nitrile rubber

Valve body: cast steel, stainless steel. 304,316,316L

Spring: 50CrVA (spring steel)

Oil cylinder, piston: chrome stainless steel

Type: normally closed

Applicable temperature: ≥ 75 ℃

Applicable medium: mechanical oil

Pneumatic cut-off valve/Shanghai Yonglong Valve Factory