Armstrong International C5490 Air Vent 30067439-890 Broad System Compatibility: Seamlessly integrates

Broad System Compatibility: Seamlessly integrates with gas

the O16-557 offers high-amp rated switching and clear scale plates for rapid field calibration by qualified contractors

high-integrity connection during installation

Reliable Actuation: 120V/60Hz Fail-safe normally closed operation prevents accidental flow during power loss

persistent yellow tipping

Armstrong International C5490 Air Vent 30067439-890 Broad System Compatibility: Seamlessly integratesThe Armstrong International C5490 (functionally identical to the TAVB 2) is a high performance stainless steel thermostatic air vent and vacuum breaker designed to optimize steam system efficiency. Engineered for pressures up to 150 PSI, this dual function HVACR component features a 1 2" NPT air vent connection and a 3 8" NPT vacuum breaker inlet. By automatically discharging air and non condensable gases during start up and operation, it prevents