PV Compact

This variant is dimensioned so that pressure loss over this component is max 10 kPa, based on the given flow.
Δp= max 10 kPa

Regulation intervals
Using the given flow, the following differential pressures are guaranteed.
DN15-25: 5-30, 20-60 or. 20-80 kPa
DN32-40: 20-80 kPa
DN50: 20-80, 20-100 or. 50-200 kPa
DN65-100: 20-100 or. 50-200 kPa

Choosing e.g. a PV compact DN25, a differential pressure between flow and returnflow could be regulated to either 5-30 kPa, 20-60 kPa or 20-80 kPa, depending on the variant.

For pump dimensioning, a pressure loss of 10 kPa could be expected.

Data sheet


Frese PV Compact

Differential pressure control valve

Save pump energy and ensure trouble free commissioning of the system with the Frese PV Compact Valve.

By design, the valve has a high Kv value which means it achieves the lowest pressure loss of any comparable differential pressure control valve on the market.

Due to fluctuating differential pressures, heating and cooling systems often create noise because the thermostatic control valves are unable to close completely.

Despite the more regular use of variable speed pumps, in larger systems the differential pressure will increase when the system is in a partial load condition. This causes an increase in system noise and the control valves to regulate inefficiently.

The Frese PV Compact Valve ensures a constant differential pressure across the load or circuit and subsequently, very accurate control valve regulation.

Due to the compact design of the valve it is easily installed in both domestic and commercial heating and cooling systems.

Med sit kompakte design kan den let indbygges i anlæg og fjernevarme units.


  • High Kv value that achieves a low pressure loss and increased energy efficiency
  • The valve offers adjustable differential pressure control
  • Frese PV Compact eliminates noise problems caused by to high differential pressure
  • Differential pressure can be set and adjusted on site
  • Tamper-proof presetting device on top of the valve, meaning there is no need for the valve sealing after presetting
  • Presetting is simple using the graphs shown in the technote