RACK Normally closed pneumatic stop valve

Nominal pressure: 2.8MPa
Applicable temperature:-50℃ ~ +120c
Test pressure:4.2MPa
Applicable medium: ammonia,fluorine, propane,propylene, etc.

Characteristics

• RACK are servo-operated valves normally closed and pneumaic open by means of refrigerant gas of high pressure acting upon power piston，taken from external high pressure line through the nipple set External interface,AEVM-NC or NO fitted both on the valve bonnet.
• RACK valves are designed to use with ammonia and other common fluorinated refrigerants，for use in suction lines of low temperature in direct expansion or pump recirculation,defrost systems with hot gas and any application that need a valve normally closed with automatic opening for not long.
• RACK valves can operate with Δp=0 and they must be instalted inhorizontal position,with the piston and pilot working in vertical way.
• When the valve are closing.there is a bleed of gas through a small bore，but only to close close the valve when the hot gas stream is finished.
• The external ine to supply of high pressure gas must be External interface 1/4”, to weld sw on ACPE connection.