Gas Powered Stop Valves RAK Series

Technical parameters：

Nominal pressure: 2.8MPa         Applicable temperature:-50℃～+150℃

Test pressure: 4.2MPa                 Applicable medium:ammonia,fluorine,etc.

Characteristics:

- RAK are servo-operated valves normally open and pneumatic closed, by means 

  of refrigerant gas acting upon power piston,taken from external high pressure 

  line through a solenoid valve VMP10 type, available by order.

- RAK valves are designed to use with ammonia and other common fluorinated    

  refrigerants,for use in suction lines or any application that need a valve normally 

  open with automatic closing for short period.

- RAK valves can operate with △p=0 and in any position. But when the valves are

  closed or open, there isa bleed of gas around the piston to allow open the valve 

  when the high pressure gas stream is closed.

- The connection between solenoid valve and RAK valve is through nut & nipple

   union on the bonnet, and cooper or steel pipe DN 1/4" or 3/8"brazed or 

   welded to nipple.