Reliable Shifting: Normally closed configuration ensures immediate shut-off during power loss or de-energization

and HKS-53 models

allowing contractors to perform a backflow preventer repair without removing the valve body from the line

it eliminates the need for mechanical butterfly valves

as it provides greater overhead for the control circuit

Armstrong Fluid Technology 182212-841 Pump 320734-701 Reliable Shifting: Normally closed configurationThe Armstrong Fluid Technology 182212 841 is a high performance Cast Iron Maintenance Free High Efficiency Circulator Pump (Model E12. 2) engineered for demand heavy hydronic heating systems. As a direct replacement for 180210 841, this unit offers a seamless upgrade path with its compact design and universal flange compatibility, fitting 3 4", 1", 1 1 4", or 1 1 2" connections. Powered by a 2 5HP single phase motor operating at 3300 RPM on 120Vac, it