Armstrong Fluid Technology 426749-211 Adapter 321894-709 Why is my steam gauge

Why is my steam gauge reading zero despite the boiler being on

This unit features a 1/8 inch NPT male connection

Operating at a dual-rated voltage of 400/460V and a dual-speed capacity of 2875/3450 RPM

Engineered for backflow prevention maintenance

Armstrong Fluid Technology 426749-211 Adapter 321894-709 Why is my steam gaugeThe Armstrong Fluid Technology 426749 211 Adapter is a critical precision engineered component designed for high performance HVAC pump systems. Constructed from high grade cast iron, this 8 inch pump adapter ensures the permanent alignment of internal rotating parts, specifically fitting 143 184JM motor frames. As the 426749 211 is the direct replacement for 426749 011, it provides a seamless upgrade path for maintaining Armstrong Series 4030 and 4380