Heating & Ventilation

https://www.mstnland.com/valve-for-heating-ventilation.html

The HVAC industry relies on the automated control of hot and cold air, water, and hydronic heat transfer fluids or refrigerants through complex piping systems, ductwork, and heat exchangers. As one of the important accessories in HVAC industry, the valve is a control component in the fluid conveying system. It has the functions of cut-off regulation and diversion to prevent countercurrent pressure stabilization and diversion or overflow and pressure relief.