As a critical mechanical replacement for the legacy 31J9101

It is intended for interior duct mounting or protected installation inside a rooftop unit cabinet

the air pressure sensing switch can be configured to monitor positive

With 16-inch leads for straightforward field wiring

The Allanson 1112-F Transformer is a high-performance constant duty gas ignition transformer engineered for reliable performance in demanding commercial and industrial heating applications

Armstrong International C2045A-1 Valve Body 30067439-890 As a critical mechanical replacementThe Armstrong International C2045A 1 is a high performance 1 2" NPT ACV 2 control valve body casting specifically engineered for precision flow regulation in commercial and industrial HVACR systems. This replacement valve body is designed for high cycle environments where durability and thermal efficiency are critical. Constructed from robust materials to withstand demanding steam and hot water applications, the C2045A 1 valve body allows for a