though specific hardware may need to be sourced separately if heavily corroded

It is essential to verify that your specific unit utilizes the two-wire pilot design

and specialized lubricant to ensure a professional-grade rebuild

check the 24V power supply to the valve operator

reducing the overall electrical load on the control circuit

Resideo VCZNB7400 Valve 326058-756 though specific hardware may needThe Resideo VCZNB7400 is an industrial grade 1 2" NPT three way hydronic valve engineered for precision control in closed loop HVAC systems. Featuring a 2. 7 Cv flow coefficient and a 60 psi close off pressure rating, this balanced cartridge cage valve provides stable regulation for both chilled and hot water applications, including those with glycol concentrations up to 60%. The bronze body construction and stainless steel stem ensure long term