In the air-conditioning and heating systems, especially in variable flow system, the situation changed when the system is running, the differential pressure of control valve or both ends of terminal equipment will change also.
Once differential pressure was changed too high to precise control will lead to a series of problems: low precision or heavy noise generation in control valve actuation, more serious will cause the control valve cannot be closed, the system function failure even and so on.
Self-Acting DP Control balancing valve is an automatic balancing
valve to stabilize differential pressure of control valve or between back flow and inlet supply of terminal
equipment. It is avoid pressure
changed out of control in control valve or equipment due to hydraulic pipe
network pressure interference. The
flow measurement is applicable once combined with static balancing to use.