The single-pole double-throw configuration facilitates both normally open (N

As a critical maintenance component for backflow prevention

Key Benefits Enhanced System Safety: Mechanically forces airflow to prevent backdrafting and ensure the safe removal of combustion byproduct gases

Remove the regulator seal cap

this unit is designed with an Open High contact structure

Johnson Controls VG2831VM Valve R-410A The single-pole double-throw configuration facilitatesThe Johnson Controls VG2831VM is a heavy duty 4 inch 3 way mixing globe valve designed for precise flow control in demanding hydronic systems. This unit features an ANSI Class 125 flat faced flange connection and a robust cast iron body, engineered to handle significant pressure drops in commercial HVACR applications. With a flow coefficient of 157 Cv and a modified linear flow characteristic, it ensures stable modulation for chilled water, hot water,