Sporlan 902919P Valve

The Sporlan 902919P Valve is a high-performance OROA-5 head pressure control valve engineered for air-cooled condensing units operating in low ambient conditions. This non-adjustable head pressure control valve features a 5/8" ODF connection and a factory-set 180# (PSI) head pressure, making it an essential component for maintaining system stability. By restricting liquid refrigerant flow from the condenser while simultaneously diverting hot gas to the receiver, the OROA-5 5/8" ODF ensures consistent liquid line pressure. This dual-action regulation prevents the common "running cycle" and "off-cycle" failures associated with low head pressure, such as iced evaporator coils or insufficient refrigerant feed at the expansion valve. Built with a rugged brass body and a durable steel diaphragm, this low ambient control valve is designed for demanding HVACR applications where reliability is non-negotiable. It provides precise refrigerant flow regulation and simplified installation for contractors looking to protect compressors from damage caused by low suction pressure during colder months.

• Stable System Performance: Automatically maintains 180 PSI head pressure to ensure the thermostatic expansion valve (TEV) receives a consistent liquid feed, even in extreme low ambient temperatures.
• Corrosion-Resistant Construction: Features a robust brass body with copper ODF solder connections, providing a leak-free, hermetic seal for long-term service in commercial environments.
• Integrated Hot Gas Bypass: Utilizes an internal ORD valve mechanism to regulate hot gas flow directly to the receiver, effectively balancing high-side pressures.
• Simplified Integration: The non-adjustable design eliminates the need for field calibration, offering a precise, factory-tested solution for standard R-22 and high-pressure refrigerant applications.
• Strainer Support: Compatible with 40-mesh insertable strainers to protect internal ports from debris and ensure high-cycle reliability.

How does this valve prevent evaporator icing?
By holding back liquid in the condenser to "flood" it, the Sporlan 902919P artificially raises the condensing pressure. This ensures the pressure differential at the TEV remains high enough to feed the evaporator properly, preventing the low suction pressures that lead to coil icing.

Can I use this valve with R-410A systems?
While the 180 PSI setting is traditionally used for R-22, you must verify your specific system's design requirements. For higher-pressure refrigerants like R-410A, higher pressure settings (such as 210 PSI or 290 PSI) are often required to maintain proper saturation temperatures.

Does the OROA-5 require a check valve for installation?
Yes, for most air-cooled systems, a check valve should be installed in the drop leg between the condenser and the receiver to prevent refrigerant migration during the off-cycle, which can lead to flooded starts and compressor slugging.

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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.