The 96-031 is designed for 5-inch venting systems

making it the standard choice for reliable HVACR control wiring

this specific model is designed with a 1/2 inch bore

While it fits the 1/2 inch bore

Enhanced Thermal Conductivity: High-purity copper construction provides superior refrigerant heat transfer and corrosion resistance

Resideo VCZMA6100 Valve 320720-756 The 96-031 is designed forThe Resideo VCZMA6100 is an industry standard 1 2" sweat three way cartridge cage valve designed specifically for demanding hydronic applications, including high pressure hot water and chilled water systems with up to 60% glycol concentrations. Built with a rugged bronze body and a resilient stainless steel stem, this diverting valve utilizes an internal cartridge design for simplified maintenance and long term durability. Featuring a 3. 7 Cv rating