Sporlan 903525P Valve

The Sporlan 903525P (Model ADRPE-3) is a high-performance direct-acting discharge bypass valve designed for precision compressor capacity control. This externally equalized bypass valve features an adjustable pressure range of 0 to 80 PSI and a 1/2" ODF solder connection, making it a standard choice for technicians managing low-load refrigeration conditions. Constructed with a heavy-duty brass body and copper connections, the Sporlan ADRPE-3 modulates hot gas flow to the low side of the system, maintaining the required minimum evaporator pressure to prevent coil icing and protect against compressor short-cycling. With its 3/8" port size and high-quality stainless steel diaphragm, this hot gas bypass valve ensures stable system operation even under fluctuating thermal loads. It is fully compatible with common refrigerants like R-22, R-134a, and R-404A, providing a reliable alternative to cylinder unloaders in split systems, chillers, and commercial refrigeration racks.

• Precise Pressure Regulation: The 0/80# adjustable range allows for fine-tuning the discharge bypass to meet specific system requirements.
• Reliable Load Balancing: Effectively manages compressor capacity during periods of low demand to ensure continuous operation without suction pressure drops.
• Robust Construction: Features a metal-to-metal seat and 1/2" ODF connections for leak-free performance and simplified brazing in the field.
• System Protection: Acts as a critical safeguard against evaporator freeze-ups by injecting discharge gas into the suction line or distributor.

How do I adjust the pressure setting on the Sporlan ADRPE-3?
Using a 5/16" hex wrench, turn the adjustment screw clockwise to increase the pressure setting or counter-clockwise to decrease it. Always monitor the suction pressure gauge at the valve outlet during calibration.

Where should this valve be installed in the piping layout?
The valve is typically installed in a branch line off the discharge line. For optimal performance, the bypassed gas should be routed to a side connection distributor or directly into the suction line using an auxiliary side connector.

Can the ADRPE-3 handle high-pressure refrigerants?
Yes, the valve is rated for a maximum working pressure of 500 PSI, making it suitable for a wide variety of modern AC and refrigeration applications.

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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.