Reliable Operation: The pilot-operated floating diaphragm design allows for consistent opening and closing even at high pressures

Can this valve be used with potable water

Built for continuous duty in demanding environments

Safety standards require the relief valve's BTU rating to be equal to or greater than the boiler's maximum output

Operating at 460 Vac

Carrier HH12ZA218 Limit Switch 320735-701 Reliable Operation: The pilot-operated floatingThe Carrier HH12ZA218 Limit Switch is a critical safety component designed for high efficiency residential heating systems, specifically engineered for furnace limit switch replacement in Carrier, Bryant, and Payne units. This OEM replacement part functions as a normally closed switch that breaks the electrical circuit when the internal plenum temperature exceeds the 180 220F safety threshold. As an auto reset limit switch, it automatically re engages