The correct choice of liquid ammonia emergency shut-off valve type

Correct choice of type of liquid ammonia emergency shut-off valve Liquid ammonia emergency shut-off valve uses the gas source (compressed air, nitrogen) and solenoid valve to control the valve on-off, widely used in gas, ammonia or weak corrosive gas tank Entrances and pipelines. Type: normally open / normally closed / manual with pneumatic / pneumatic double acting Body material: cast steel, stainless steel. 304,316,316 L 1 / normally open shut-off valve: electromagnetically energized air inlet, air pressure close the valve. Turn off the solenoid valve exhaust, the valve to open again. 2 / normally closed cut-off valve: solenoid valve power inlet, open the valve, solenoid valve power off, the valve automatically shut down. 3 / Manual with pneumatic shut-off valve: The shut-off valve can be opened / closed manually without gas / power supply. Maintenance: 1 / Pneumatic cut-off valve cylinder opening pressure ≥ 0.3-0.6Mpa, the daily working pressure of the cylinder shall not be less than 0.4MPa, to ensure the normal operation of the valve. 2 / Operating temperature: -15 ~ 60 ℃ 3 / The medium flowing through the valve body should be free of impurities and no particles of gas.

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