Armstrong Fluid Technology 216942-300 Valve 321042-401 Precise Modulation: The 28

Precise Modulation: The 28

This kit is intended for installations at altitudes exceeding 2

reducing the risk of accidental positioning

Environmentally Hardened: NEMA 4X watertight enclosure and aluminum construction prevent corrosion in demanding mechanical rooms

it can be mounted in horizontal

Armstrong Fluid Technology 216942-300 Valve 321042-401 Precise Modulation: The 28The Armstrong Fluid Technology 216942 300 Valve is a precision engineered 1 2" NPT Brass Hot Water Pressure Relief Valve designed for high performance hydronic heating systems. Factory set at a 30 PSI relief pressure, this RL 11 relief valve serves as a critical safety component by automatically discharging excess pressure to protect boilers and downstream piping from structural damage. Constructed from high grade, corrosion resistant brass, it