A differential pressure controller consists of a valve and a pressure actuator. Differential pressure controllers in the primary system are mainly used to keep a constant and lower differential pressure across a motorised control valve or a total system/substation.
As a rule of thumb, the differential pressure controller should be used whenever the ratio between maximum and minimum available differential pressure from the network is larger than 2.
A differential pressure controller can also be used to perform flow limitation in combination with a motorised control valve.
It is recommended to place the controller in the return after the components, across which a constant pressure is maintained. In certain situations – especially when the supply pressure is very high – it can be useful to install the differential pressure controller in the flow.
Features and benefits
Eliminates pressure variations and provide optimum operating conditions with improved temperature control quality.
Made for demanding systems, resistant to corrosion, cavitation and dirt.
Connected system is protected against pressure surges, fluctuations, cavitation and noise.
Variable flow in district heating and cooling systems
Balance your network, save energy and improve end user comfort by hydronic balancing and control of district energy networks.
Tools and apps
Heat Selector
Danfoss Heat Selector is the best-in-class online selection tool that optimises planning process for heating application experts.