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Gas-Powered. Durable. Cost-Efficient.
The HCK5D valve is ideally suited for positive closure of suction, liquid overfeed, and flooded evaporator gas return lines during defrost in low temperature applications. These valves can be installed in horizontal or vertical lines and are best installed on their sides for improved conveyance of liquid and oil. Because they are gas-powered to close, the valves operate reliably even under viscous oil conditions. They are suitable for Ammonia, Halocarbons, CO2 and other Hansen approved refrigerants and gases.
The unique self-equalizing piston design eliminates the need and cost for a separate equalizing solenoid valve and piping and associated wiring and controls. A single high pressure source is the only pilot piping required. The main piston/seat opens based on a pressure difference between the evaporator and suction pressure. Bleed rate is adjustable via screw-in orifice discs. The ductile iron body is much stronger and tougher than grey iron or “semi-steel” iron. Protective pilot line disc strainers are included (except CO2 valves). Manual opening stems are standard for positive opening during servicing or trouble shooting of the systems.
