and HKS-53 models

The Johnson Controls P47AA-1 is a commercial-grade steam pressure limit control designed for high-limit cutout or operating control in low-pressure steam heating systems

For the most accurate HVAC scale installation

it eliminates the need for mechanical butterfly valves

Efficient Performance: Optimized 1075 RPM output provides the necessary static pressure to maintain efficiency in modern air handlers

Armstrong Fluid Technology 182212-841 Pump 320734-701 and HKS-53 modelsThe 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