The Cleveland Controls DFS-448-452 is a fixed-set-point air pressure sensing switch designed for critical airflow proving in duct heaters

If the sequencer is hot to the touch but the contacts remain open

always verify your system's evaporating temperature range before installation

this valve is specifically calibrated for R410A pressure-temperature curves

Can this valve be used in open-loop potable water systems

Conbraco 10-614-09 Valve Els PW 17895 The Cleveland Controls DFS-448-452 isThe Conbraco 10 614 09 is a high capacity hot water pressure relief valve engineered for critical overpressure protection in heavy duty hydronic heating systems and commercial boilers. Constructed with a rugged bronze body and a corrosion resistant spring cage, this ASME Section IV certified valve is factory set at 45 PSI to ensure system integrity during runaway firing or control failure. With a massive 1,306,000 BTU capacity, it manages high volume