While the standard plastic enclosure is durable

Direct-fit compatibility with Danfoss STF solenoid valves

Compact NEMA 1 footprint: Allows for installation in tight mechanical spaces while providing adequate physical protection

If the lockout is caused by rusted

Armstrong Fluid Technology 110223-308 Pump 326070-701 While the standard plastic enclosureThe Armstrong Fluid Technology 110223 308 is a high performance Astro 250SS stainless steel circulator pump designed for both residential and light commercial HVAC applications. Engineered for maximum efficiency, this three speed circulator operates on 115Vac single phase power with a full load draw of 0. 98 Amps and 117 Watts. As a lead free, maintenance free pump, it is ideal for potable water systems and open loop hydronic heating, including solar