Armstrong International A9739 Air Vent R-410A and other control functions

and other control functions

making it the direct OEM replacement for legacy part numbers S8401-002 and 8401-002

This kit is designed for Weil McLain Ultra Series 1 and Series 2 gas-fired boilers

This transducer is designed for use with air or non-conducting gases

which can lead to premature failure or unsafe operating conditions

Armstrong International A9739 Air Vent R-410A and other control functionsThe Armstrong International A9739 Thermostat Air Vent is a critical OEM replacement part designed specifically for "A", "K", "J", and "L" Series float and thermostatic steam traps. Built for high demand environments, this steam trap air vent effectively discharges non condensable gases and CO2, preventing air binding and ensuring efficient heat transfer throughout your steam system. It features a balanced pressure phosphor bronze thermostatic wafer