Most failures are caused by microscopic cracks due to thermal shock

this 3/4 inch sweat zone valve features a 3

Always verify these before ordering

even in cramped air handler or condenser cabinets

airflow balance

Utica-Dunkirk 550003355 Steam Gauge 320788-703 Most failures are caused byFor service technicians and mechanical contractors maintaining commercial or residential boiler systems, the Utica Dunkirk 550003355 Steam Gauge is the required OEM replacement component for ensuring accurate pressure monitoring. This 030 PSI boiler pressure gauge features a high visibility dial face and robust internal movement designed specifically to handle the thermal cycling and rapid pressure fluctuations inherent in steam applications. As a