Sporlan 900553P Regulator

The Sporlan 900553P, also identified as the CROT-6 evaporator pressure regulator, is a high-performance crankcase pressure regulating valve designed to prevent compressor motor overload by limiting suction pressure. With a 1/2" ODF solder connection and an adjustment range of 0 to 60 PSI, this valve is essential for maintaining system stability during startup or after defrost cycles when high suction pressures are common. By managing the refrigerant mass flow entering the compressor, the CROT-6 ensures the motor remains within its specified amperage limits, preventing nuisance trips and electrical stress. This HVACR system component features a sensitive bellows design for precise pressure modulating, making it a reliable standard for light to medium commercial refrigeration applications. Contractors rely on the Sporlan CROT-6 0/60 for its robust construction and field-proven ability to protect against excessive suction gas pressure in extreme operating conditions.

Key Benefits

• Direct-acting modulation provides responsive pressure control without the need for external power sources.
• 0/60 PSI adjustment range allows for precise calibration to specific compressor manufacturer suction limits.
• 1/2" ODF connections facilitate standard copper tubing installation for seamless integration into existing liquid or suction lines.
• Crankcase pressure limiting extends the service life of compressors by preventing high-load startups.
• Sporlan engineering ensures tight tolerances and long-term mechanical reliability in demanding refrigeration environments.

Common Questions

How do I adjust the Sporlan CROT-6 regulator?
Remove the seal cap and turn the adjustment screw clockwise to increase the pressure setting or counter-clockwise to decrease the setting while monitoring high-side suction pressure via a manifold gauge.

Where should the 900553P be installed in the system?
This regulator should be installed in the suction line between the evaporator and the compressor, as close to the compressor as possible, to accurately manage the gas pressure entering the crankcase.

What refrigerants are compatible with this valve?
The CROT-6 is compatible with most common CFC, HCFC, and HFC refrigerants; however, always verify lubricant compatibility with the valve’s internal seals before installation.

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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.