While magnesium is excellent for tank protection

As the direct professional replacement for the Watts 0322825 (N256)

Constructed from high-durability galvanized steel

while also offering a high level of protection against corrosion

Armstrong Fluid Technology 805189-621K Flange Set 320788-702 While magnesium is excellent forThe Armstrong Fluid Technology 805189 621K flange set and hardware kit is built for secure, leak free installation of hydronic pump flange kit connections on 2. 5" LFB systems. Designed to match Armstrong circulators and in line pumps, this kit includes precision machined flanges and properly sized hardware to maintain alignment and sealing under typical HVAC operating pressures. Contractors rely on this 2. 5 inch pump flange set for consistent