The 3M™ Whole House Scale Inhibition Water Treatment System AP430SS contains polyphosphates to bind calcium and magnesium hardness minerals, preventing them from precipitating out (or becoming a solid) and building up on metallic surfaces such as water heaters and plumbing fixtures like faucets, pipes and shower heads.

3M™ Aqua-Pure™ Scale Inhibitor System, 10 gpm, 10-1/4 in H, 25 to 125 psi, 40 to 100 deg F, NPT, 3/4 in, 316 Stainless Steel, Import

• Polyphosphates help to inhibit scale build-up in water heaters (standard and tank-less styles) and in appliances such as dishwashers and clothes washers which can help extend the life of hot water-using appliances
• Scale inhibition also helps protect piping from corrosion
• Easy cartridge change-out helps provide easy system maintenance
• 316 stainless steel head for "sweat-in-place" installation and corrosion resistance
• 2-3/4 in Dia
• 3/4 in NPT inlet/outlet connections
• Quick change cartridge filter
• 9462.5 l capacity