Flow control valves are used where fluids in a system must be limited to a set maximum flow rate. Typical applications include balancing of chill water system branches to ensure that the heat exchangers in the various branches receive the the desired flow rate of chilled water. This is important to ensure proper temperature control in rooms of buildings which determines the level of comfort for occupants.
Pressure Independent Control Valve (PICV)
The pressure independent control valve maintains a constant set flow rate on the downstream of the valve in the presence of changing differential pressure conditions. An internal diaphragm regulates and maintains the differential pressure across the valve hence maintaining the set flow rate.
