Fiorentini 31155-6BP 2" Painted Balanced Valve 9.5" Diaphragm Full Lockup Internal Sensing 1/2" Vent

The Fiorentini 31155-6BP Balanced Valve is a 2-inch control valve with a 9.5-inch diaphragm with full lockup and internal sensing, a 1/2-inch vent, designed to control the gas pressure in heating equipment. It works by a diaphragm based balancing mechanism which varies the valve position in relation to the changes in downstream pressure to maintain controlled and stable flow. Usually built into HVAC systems like gas distribution or burner assemblies in commercial or industrial systems, it is installed in the gas line to allow fine control of pressure.