Sporlan 903038P Pressure Control

Professional-grade Sporlan 903038P Pressure Control (Model LAC-4-180) is a high-performance low ambient head pressure control valve designed specifically for refrigeration and air conditioning systems operating in fluctuating outdoor temperatures. As a three-way modulating valve, this Parker Sporlan LAC-4 series component maintains a consistent 180 PSI discharge pressure by restricting refrigerant flow from the condenser and simultaneously bypassing hot gas to the receiver. This mechanism prevents common low ambient issues like insufficient pressure at the expansion valve, evaporator icing, and low suction pressure. Built with a robust brass body, copper 1/2" ODF connections, and a domed steel element, this non-adjustable pressure regulator is factory-set and tested to ensure leak-free operation up to a 500 PSI design working pressure. For technicians servicing commercial refrigeration, walk-in coolers, or remote condenser units, the Sporlan 903038P offers a reliable, "set-and-forget" solution for maintaining system equilibrium and protecting critical compressor components during cold weather cycles.

Key Benefits

• Precise Head Pressure Regulation: Maintains a 180 PSI set point to ensure reliable liquid line pressure during low outdoor ambient conditions.
• Heavy-Duty Construction: Features a brass body and copper ODF solder connections for superior corrosion resistance and field durability.
• Non-Adjustable Reliability: Factory-calibrated and tested to eliminate the risk of field tampering and ensure consistent performance.
• Broad Compatibility: Optimally designed for use with R-22, R-407C, and R-502 refrigerants in various HVACR applications.
• Hermetic Design: Includes a domed steel element and metal-to-metal seating for a positive, leak-free seal in demanding environments.

Common Questions

What is the primary function of the Sporlan LAC-4-180?
It serves as a low ambient control valve that modulates refrigerant flow between the condenser and receiver to maintain a minimum head pressure, preventing evaporator freeze-ups and ensuring the thermostatic expansion valve (TEV) receives the necessary pressure differential to operate.

Can this valve be adjusted in the field?
No, the 903038P is a non-adjustable model. It is factory-set to 180 PSI. For applications requiring different settings, a specific LAC model with a different pressure rating or an adjustable ORD/ORI combination would be required.

Is an inlet strainer included with this model?
This specific part number (903038P) is the "Less Strainer" (LS) configuration. For systems requiring extra filtration, an external strainer should be installed upstream in the liquid line.

Which refrigerants are compatible with the 180 PSI setting?
The 180 PSI setting is the standard industry benchmark for R-22, R-407C, and R-502, though it can be utilized with other refrigerants depending on specific system design requirements.

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.