Testing the open circuit voltage with a multimeter should show at least 25-35 mV

The 1980 series features a robust construction utilizing a combination of copper and nickel alloys to ensure maximum electrical conductivity and a consistent 30mV output for reliable gas valve operation

the A21825-1 is built to withstand rigorous thermal cycling and high-pressure differentials common in industrial steam applications

Common signs include a "bulged" top

Always verify thread pitch and specifications before installation

Armstrong International 811G Gasket Testing the open circuit voltageThe Armstrong International 811G Gasket is a critical sealing component engineered for high pressure steam trap maintenance within the TVS811 inverted bucket trap series. Designed to withstand the thermal cycling and high velocity condensate flow inherent in modern HVAC steam systems, this gasket ensures a pressure tight seal between the trap body and the cap. Formulated from high grade graphite or reinforced synthetic fibersdepending on the specific