Armstrong A4 1 in NPT Float & Thermostatic Steam Trap, 30 PSIG PMO

Armstrong's A and AI Series float and thermostatic steam traps serve industrial applications from 0 to 175 psig and use a balanced-pressure phosphor-bronze bellows caged in stainless steel. They suit heat exchange equipment that must vent air and non-condensable gases quickly. The AI Series adds in-line connections with the same internals as the A Series.

Part D500141 is the Armstrong A4 in 1 in NPT, rated 30 psig maximum operating pressure.

Manufacturer documentation: data sheet, installation and maintenance manual.