PAW Hydronic Heating Pump Station K31-1"
  • PAW Hydronic Heating Pump Station K31-1"
  • PAW Hydronic Heating Pump Station K31-1"
  • PAW Hydronic Heating Pump Station K31-1"

PAW Hydronic Heating Pump Station K31-1"

USD$ 879.17
SKU : PAW_Hydronic_Heating_Pump_Station_K31
* Grundfos Pump:

Plug and Play Hydronic heating and cooling solutions with PAW Modular Zone Pump Stations.

PAW Hydronic Heating Pump Station K31
With German Engineered PAW modular pump stations you can design heating system quickly while delivering the highest performance and quality standards in the industry. The PAW Zone pump module quickly connects to a centralized distribution manifold allowing you to share the heat source to multiple zones. Now you can easily design a complete home hydronic system that can do radiant floor heating, domestic hot water, radiators and fan coils, as well as pools and hot tubs. All with one single boiler connection.
modern hydronic heating system
The K31 with 1” NPT connections is used for high heating zones that do not require mixing. This can be most zones such as domestic hot water, fan coil radiations and pools or hot tubs. For Hyronic radiant floor heat you should use the K32 Model with electronic mixing valve.


  • 1” NPT female connections
  • Large ball valves handles
  • Fully insulated enclosure using EPP
  • Check Valve built into the return piping
  • Reversible supply and return on right or left side (field changeable)
  • All brass construction
  • Metal temperature gauges
  • Pump isolation for quick system repair
  • Available with either a Grundfos UPS1 25-58 U or Grundfos ALPHA 25-55 U

Technical Specifications




1"- DN 25

Materials Fittings Bras
  Gaskets EPDM/NBR
  Insulation EPP
Technical Data Max. Pressure 116 psi/8 bar
  Max. Temprature 230 'F/110 'C
  CV value 6.3
Dimensions Zone module inlet 11/2"male
  Zone module outlet 1" NPT F
  Center distance 125 mm/421/32"
  Length 368 mm/14.5"
  Width insulation 250 mm/927/32"
  Height insulation 383 mm/15"
Recommended application High/floating temprature zone control up to 85.5 kBTU/h/25.0 kW at △T = 18 'F/10 K  

Choice of Grundfos UPS 25-58 U 3speed pump or Grundfos ALPHA 25-55 U High Efficiency Pump

UPS 25-58U

Alpha 25-55U