CK-575AS20S75B3NSN Refrigerating Specialties (RS) 3 CK-5 3/4 Socket-Weld, 3 Socket-Weld, A120G

These valves are piston-type, gas powered, and normally open. They are heavy duty, semi-steel bodied valves that are built with control precision. The 32mm through 100mm (1-1/4" through 4") port size valves are equipped with an attached modular pilot solenoid, A2D pilot regulator, and manual lift stem. The 32mm (1-1/4") port size has a PTFE main seat; the 40mm (1-5/8") port and larger have a metal to metal seat. The 100mm and 125mm (5" and 6") port size versions of this unique suction stop valve utilize a larger capacity, remotely piped pilot operated solenoid, the R/S type S8F. In addition, the pilot regulator for these two larger sized valves is mounted on top of valve, with the strainer disc assembly piped into the side of the adapter.The purpose of the CK-5 gas-powered suction stop valve is to provide the normal operating features of the R/S CK-2 stop valve. In addition, this unique control valve incorporates a built-in mechanical fail-safe feature which prevents the undesirable effects of an immediate opening of the valve in the event of an electrical power failure while the evaporator is in defrost.Along with the standard R/S type CK-2 gas-powered suction stop valve, the CK-5 is typically used for low temperature applications in wet return lines on liquid recirculation systems or on the liquid and gas return legs of flooded evaporators. Due to its normally open construction, pressure drop is minimal in suction or wet return applications. In addition, normal gravity circulation is unrestricted on flooded evaporators. For gravity flooded evaporators, both valves should be installed with their flow arrows pointing towards the surge drum. Features:Normally OpenLow Pressure DropManual Opening StemIntegrated Pilot Solenoid on 32mm to 100mm (1-1/4" to 4") SizesUse in Vertical or Horizontal LineValve may be mounted on its sideDesign Pressure (MRP): 27.6 bar (400 psig)