Ammonia liquid move to cut off the pneumatic valve working principle and installation note

ammonia liquid move to cut off the pneumatic valve is a kind of dangerous goods safety protection new pneumatic valve, it is mainly used for emergency can quickly close in a remote spot on the tank entrance, installed in a liquefied gas. Liquid ammonia gas related piping, and hand over a long distance oil pump ( SB- Type) Supporting the use, the use of open - hydraulic pneumatic control valve Close to happen a lot on a pipe or tank leaking even fire, fast manual hand pump discharge pressure, or high temperature melt fusible alloy, pneumatic valve cylinder pressure relief automatically, the pneumatic quickly close the valve and stop leakage, ensure the safety protection.
ammonia liquid move to cut off the working principle of the pneumatic valve:
line installed more than emergency cut off under the condition of pneumatic valve control should use two hand pump, one standby pump work another pump, prevent damage of the pump this pneumatic valve can not work normally, each emergency cut-off pneumatic valve with a ( JH - P) Needle type pneumatic control valve.
ammonia to cut off the pneumatic valve main performance specification:
pressure rating: K. MPa
oil cylinder pressure, or less. 。 Mpa
use temperature: - ℃ ~ +
oil cylinder use medium: hybrid spindle oil. Transformer oil
use medium: natural gas, liquefied gas, liquid ammonia, gas
fuse closed time: + ℃
closing time: seconds or less
oil cylinder opening pressure: p. MPa
pneumatic valve body material: carbon steel WCB stainless steel. 。 L
oil cylinder, piston chromium stainless steel
seals, o-rings, ptfe.
spring CrVA nitrile butadiene rubber ( Spring steel)

type: often close-type ammonia liquid move to cut off the pneumatic valve installation use notice:
and custody of the individual foreign pathway of the pneumatic valve with a plug or cover closed, stored in a dry indoor ventilation, long-term storage should be regularly check, remove dirt, and coating on the surface of the processing rust-proof oil, prevent rust.
before installing this pneumatic valve clearance should be clean and tighten the screw thread joint.
pneumatic valve, ammonia hydraulic cutting on the principle of check pneumatic valve, can only single want to truncate, when installation should pay attention to the pneumatic valve, to protect as pneumatic valve at the end of the entrance. Pneumatic valve installation should be paid attention to: high to low.
order shall indicate the flange sealing surface form, and class standard.