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HeatBloC® K38 DN 32 (1¼")

4-way mixing valve
Field of application: for heating systems controlled by a mixing valve in combination with a boiler temperature maintenance
Recommended application range:up to 52 kW; 20 K up to 2240 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: 52 kW
Max. operating pressure: 6 bar
Temperature difference: 20 K
Kvs value: 6.1
Flow rate: 2240 l/h
Power consumption: 2.5 W
Check valves: 1 x 200 mm wc
Dial thermometer: 0 - 120 °C
Shut-off valves: Ball valves with handle
Opening pressure check valve: 200 mm wc
Number of check valves: 1
Height: 441 mm
Width: 250 mm
Nominal diameter: DN 32 (1¼")
Installation length: 400 mm
Connection generator: 2" ext. thread, flat sealing
Connection consumer: 1¼" int. thread
Centre distance: 125 mm
Valves and fittings: Brass
Gaskets: EPDM
Insulation: EPP
Electrical data (heating/actuators)
Setting time 90°: 140 s
Electrical connection: 230 V - 50 Hz
Torque actuator: 5 Nm
Power consumption: 2.5 W
Flat-sealing connections 2" ext. thread
incl. 2" union nut for the installation on a PAW modular distribution manifold.With PAW mounting equipment the heating circuit can be installed on wall brackets.

Large ball valve handles,
easy handling, visible closing position

4-way mixing valve
completely made of brass, when installed individually it is suited for the operation of a boiler circuit pump (a change in the boiler circuit with closed flow line is possible).When installed on a distribution manifold the return line of the mixing valve must be equipped with a non return valve to avoid unwanted circulation.
For mounting actuators of other manufacturers, you need the adapter set item no. 705580.

PAW actuator SR5
with 1.5 m cable and mounting set for snap-in assembly on the mixing valve, suited for flow on the right or left side, change-over switch for manual / automatic operation, supply 230 V / 50 Hz, torque 5 Nm

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

All water-carrying parts are made of brass

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