Ranco O16-200 Pressure Control Els PW 17895 a close-on-rise or "open-high" control

a close-on-rise or "open-high" control would typically be required to ensure the load is energized when heat is needed

The Berko 4520-2048-000 is an OEM 135F CO Auto Limit Switch designed for high-performance thermal regulation in Marley Engineered Products and QMark 900 Series B heating systems

This is an essential component for maintaining HVAC system reliability and efficient electrical distribution

By utilizing this genuine Robertshaw replacement part

Built with a heavy-duty bronze body and seat

Ranco O16-200 Pressure Control Els PW 17895 a close-on-rise or "open-high" controlThe Ranco O16 200 is an industry standard single high pressure control engineered for critical system monitoring in commercial refrigeration and HVAC applications. This SPDT pressure switch features a wide pressure range of 150 to 450 PSI, making it ideal for head pressure control or high limit protection in systems utilizing R12, R22, or R502. The unit is equipped with a manual reset mechanism, ensuring that the system remains locked out after a high