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Gas-Powered. Durable. Adjustable.
These valves are ideally suited for low temperature applications to positively close, during defrost, the following: suction lines, liquid overfeed and flooded evaporator gas return lines, as well as gravity liquid and gas lines. Because they are gas-powered to close, these valves operate reliably even under viscous oil conditions. They meet the requirements for “suction stop valves having delayed main valve opening” when specified. Their rated suction vapor capacities are equal to Hansen type HCK2/HCK2W and therefore are ideal for retrofitting existing valves in the field. These valves are suitable for ammonia, R22, R134a, CO2 and other approved refrigerants.
Unique spool type piston/seats are more resistant to dirt than typical full skirted piston designs. The ductile iron body (5” & 6” are cast steel) is much
stronger and tougher than grey iron or “semi-steel” iron. Protective pilot line disc strainers are included. Manual opening stems on both the main and pilot solenoid valves are standard for positive opening during servicing or trouble shooting systems.
• Body: Ductile iron, ASTM A536, 5” & 6”: Cast steel.
• Top Cover: Steel, ASTM A36
• Piston/Seat: Ductile iron, ASTM A536; 1¼” only: stainless steel
• Piston Seal (5” & 6” only): Teflon®, spring activated
• Spring: Stainless steel
• Gaskets: Non-asbestos, graphite composite
• Stem: Plated steel
• Stem Seal: O-ring plus graphite composite packing
• Seal Cap: Steel, zinc chromate plated; 1¼” only: glass filled polymer
• Companion Flanges: Forged steel (1¼” to 4”), ASTM 105
• Safe Working Pressure: 400 psig (27 bar)
• Operating Temperature: -60ºF to +240ºF (-50ºC to +115ºC)