• Best quality
  • Quick assembly
  • Longevity




HeatBloC® K31 DN 50 (2")

direct / unmixed
Field of application: for boiler charging, for modulating temperature heating
Recommended application range: up to 250 kW; 20 K up to 10800 l/h

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Our offer is exclusively aimed at corporate clients.

Operating data
Max. operating temperature: 110 °C
Dial thermometer: 0 - 120 °C
Output: 250 kW
Max. operating pressure: 6 bar
Temperature difference: 20 K
Kvs value: 31.2
Flow rate: 10800 l/h
Check valves: 1 x 250 mm wc
Dial thermometer: 0 - 120 °C
Shut-off valves: Ball valves with handle
Opening pressure check valve: 250 mm wc
Number of check valves: 1
Height: 660 mm
Width: 360 mm
Nominal diameter: DN 50 (2")
Installation length: 630 mm
Connection generator: Flange DN 50 / PN 6
Connection consumer: 2" int. thread
Centre distance: 180 mm
Valves and fittings: Brass
Gaskets: EPDM
Insulation: EPP
Flange connection DN 50/PN 6 as slip-on flange and 2" internal thread
incl. gaskets and screws, for installation on PAW modular distribution manifolds.

Hand lever at the ball valve,
easy handling from the front, even when the insulation is closed, visible closing position

EnEV-compliant functional insulation
made of durable elastic EPP, complete insulation of valves and fittings, ventilation opening to cool the pump

Free access to the pump head
by simply removing the front insulation shell

Check valve in the return pipe
can be opened, 200 mm wc, spring-loaded, thus suited for horizontal and overhead installation

Flow on the right = standard
Flow and return line can be changed on site, also for heating circuits with mixing valve

Full metal thermometers
can be pulled off, with immersion sleeve integrated in the ball valve

PAW heating pumps with high-efficiency (ECM) technology
fitted with 2 m cable, completely premounted, integrated in the insulation, pressure tested, with serial number, perfectly designed system, pump characteristics, EuP/ErP READY

Pump can be isolated,
so that it can be replaced without draining