Description
The Parker-Sporlan 900430P CRO-6 is a crankcase pressure regulator engineered to protect refrigeration and air conditioning compressors from damaging overload conditions caused by excessive suction pressure during startup or off-cycle periods. By maintaining outlet (suction) pressure within a safe operating range, the CRO-6 prevents motor overload and extends compressor service life in demanding commercial refrigeration and HVAC applications.
Key Features
- Crankcase pressure regulator (outlet-pressure type) — limits compressor suction pressure to a safe level
- Pressure range: 0–60 PSIG, providing broad compatibility across a wide range of refrigerants and system designs
- 5/8″ ODF sweat connections for straightforward field installation
- Compact, durable construction suited for commercial refrigeration and air conditioning systems
- Designed to work in series in the suction line between the evaporator and the compressor
- Fully field-adjustable set point within the 0–60 PSIG range
Application
The CRO-6 is installed in the suction line and acts as a back-pressure regulator on the compressor side. When suction pressure rises above the set point — such as during system pulldown or hot-gas defrost — the valve throttles to protect the compressor from excessive amperage draw. This makes it an essential component in walk-in coolers, reach-in cases, and other commercial refrigeration systems where compressor protection is critical.
Product Specifications
- Brand: Parker-Sporlan
- SKU / Part Number: 900430P
- Model: CRO-6
- Type: Crankcase Pressure Regulator (Outlet-Pressure)
- Pressure Range: 0–60 PSIG
- Connection Size: 5/8″ ODF (sweat)
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