Hydrotherm 02-1552 Gas Valve Freon This poppet-type pressure relief valve

This poppet-type pressure relief valve is specifically designed for residential applications

High Nominal Capacity: Delivers up to 14 tons of cooling capacity

Enhanced Accuracy: Features an integral hypodermic needle test point for rapid calibration and pressure verification without breaking the line

and draft pressure

How do I test this flame sensor in the field

Hydrotherm 02-1552 Gas Valve Freon This poppet-type pressure relief valveThe Hydrotherm 02 1552 Gas Valve (also identified as 021552) is a heavy duty, 24V standing pilot natural gas valve engineered for precision fuel regulation in commercial and industrial boilers and furnaces. As a high capacity combination gas control, this unit integrates a safety shutoff, manual valve, dual automatic operators, and a pressure regulator into one compact housing. It is a direct OEM match for many Hydrotherm heating systems and cross