Ranco O16-261 Pressure Control

The Ranco O16-261 Pressure Control is a professional-grade single-function low pressure switch engineered for high-stakes commercial HVACR environments. This SPDT pressure control provides a critical safety layer for compressors, featuring a manual reset mechanism that prevents equipment from cycling under fault conditions until a technician inspects the system. With a functional pressure range of 10" Hg to 100 psi and an adjustable 10 psi differential, this unit offers the precision required for modern refrigerant management. It is designed as a direct replacement for P70HA-2, ensuring seamless integration during field service calls.

Built for durability in high-vibration settings, the O16-261 utilizes laser-welded bellows and the Super Cap capillary protection system. The 48-inch capillary with a 1/4" SAE flare nut allows for flexible mounting, while the NEMA 1 enclosure protects internal components from debris. This control is fully compatible with advanced refrigerants like R-410A and R-134A, as well as legacy systems utilizing R-22 or R-502.

• Universal Application Support: Handles a wide variety of refrigerants including R-410A, R-134A, R-22, and R-12.
• Enhanced Structural Integrity: Heavy-duty plated steel frame and vibration cone prevent premature failure in demanding mechanical rooms.
• Field-Service Friendly: Front-located captive cover screw and non-conductive cover simplify wiring and adjustments.
• Versatile Wiring: SPDT switch logic enables flexible control of cooling, heating, or alarm circuits.

Is the Ranco O16-261 compatible with R-410A systems?
Yes, the laser-welded bellows and construction are rated to handle the pressures associated with R-410A, alongside common legacy refrigerants.

Can I use this to replace a Johnson Controls P70 series switch?
The Ranco O16-261 is the industry-standard direct replacement for P70HA-2, making it a reliable choice for retrofitting existing commercial installations.

How does the manual reset function operate?
When the pressure drops below the setpoint, the switch trips and locks out. The system will not restart until the pressure rises and the technician manually depresses the reset button, ensuring safety after a low-pressure event.

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.