Armstrong AI3 3 3/4 in NPT Float & Thermostatic Steam Trap, 175 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 D501576 is the Armstrong AI3 in 3 3/4 in NPT, rated 175 psig maximum operating pressure.

Manufacturer documentation: data sheet, installation and maintenance manual.