Reliance® Water Columns

All Reliance® water columns and components are designed and manufactured in total compliance with ASME Boiler Code requirements. Of special importance, all steel water columns are welded according to specific qualified procedures that meet ASME requirements.  Water columns and components such as gage glasses and valves are hydrostatically tested to 150% of their design pressure. Today, Reliance continues as the foremost name in water column technology and manufacturing.  Our current advanced boiler trim products are modern-day versions of their predecessors that were pioneered by the Reliance Gauge Column Co.  We are America’s oldest and most respected exclusive boiler trim manufacturer.


Float type water column models are individually rated at pressures from 0 to 900 PSI (60 Bar).  Probe type water column models up to 3000 PSI (200 Bar).  The more versatile probes can actuate alarms or other controls. From 0 to 250 PSI (17 Bar) Models with probes serving ranges to 3000 PSI (200 Bar) Water Column and Controls General Info  
Water Column conversion from float to tube Try (Gage) Cocks Bronze Valves & Steel Valves for all your water gage needs