the system should never be left running without a functional high pressure control

A 3-element design allows for more efficient heat distribution across the airflow and provides a level of redundancy

Smith 100208404 Pressure Switch is a critical safety component designed for high-efficiency water heaters and boilers

though you should always verify the Maximum Rated Pressure (MRP) against your specific system requirements

Sporlan 040305-05 Valve 318518-761 the system should never beMaintain precise suction pressure and prevent evaporator freeze ups with the Sporlan 040305 05 A7 A Automatic Expansion Valve (AXV). This constant pressure valve is a standard for technicians servicing small capacity systems where maintaining a stable evaporating pressure is critical. Featuring 3 8" ODF solder connections, this valve is built with a durable brass body, stainless steel internal springs, and a 100 mesh inlet strainer to protect the