Sporlan 900430P Regulator

The Sporlan 900430P is a heavy-duty CRO-6 Crankcase Pressure Regulator designed specifically to protect compressor motors from overloading during high-load periods. By maintaining a 0/60 PSI adjustment range, this valve monitors outlet pressure and modulates the refrigerant flow to ensure the suction pressure at the compressor remains below the manufacturer's recommended limits. This is particularly critical following a defrost cycle or a prolonged normal shutdown period when evaporator pressures typically spike. Built with a 5/8" ODF solder connection, it integrates seamlessly into the suction line of commercial refrigeration and air conditioning systems.

This refrigeration pressure regulator features a hermetic construction with a brass body and copper connections to ensure long-term leak integrity. The Sporlan CRO-6 is compatible with high-pressure refrigerants including R-22, R-134a, and R-404A. Its primary function as a crankcase pressure regulating valve (CPR) is to throttle vapor flow automatically until the compressor can safely handle the load. For optimal performance, the 900430P should be installed downstream of any other system accessories to prevent erratic cycling and ensure stable compressor operation.

• Compressor Protection: Limits crankcase pressure to prevent motor burnout during hot starts or post-defrost pulldown.
• Precise Modulation: Features an adjustable 0 to 60 psig range for tailored system setpoints.
• Durable Construction: Built with a corrosion-resistant brass body and a 40-mesh insertable strainer to protect the valve seat from debris.
• Wide Compatibility: Designed for use with common HFC and HCFC refrigerants in diverse HVACR applications.
• Hermetic Design: Copper ODF connections allow for a secure, permanent solder joint in the suction line.

Common Questions

Where should the CRO-6 be installed in the refrigeration circuit?
The regulator must be installed in the suction line, specifically between the evaporator and the compressor. To ensure the highest level of protection, it should be located downstream of all other controls or accessories like accumulators.

Does this valve require special handling during soldering?
Yes, like most precision refrigeration valves, the internal components are sensitive to high heat. You must wrap the valve body with a wet cloth or use a heat-sink paste during the brazing process to protect the bellows and internal seals.

How do I determine the correct setpoint for the 900430P?
The setting should be adjusted based on the compressor manufacturer's maximum allowable suction pressure. You should set the valve as high as possible without exceeding that limit to maximize system capacity while still providing protection.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.