this valve automatically vents to the atmosphere when a vacuum occurs

restoring factory-spec cooling efficiency and heat transfer rates

Fixed Speed Performance: Delivers a consistent 1120 RPM for stable belt-driven pump operation

ensuring cold-weather reliability for residential and light commercial hydronic systems

17 Cv control valve features a unique convertible design

Armstrong Fluid Technology 182202-657 Pump 326010-701 this valve automatically vents toThe Armstrong Fluid Technology 182202 657 is a high performance Cast Iron Maintenance Free High Efficiency Circulator Pump engineered for precision in residential and light commercial hydronic heating systems. As the direct replacement for 180200 657, this Model E8. 2 unit features a robust 1 6HP motor operating at 120Vac, single phase, delivering a consistent 3250 RPM. Designed for versatility, it integrates seamlessly with 3 4", 1", 1 1 4", or 1 1