Motorized zone valve


  • Closing pressure up to 150 kPa
  • Manual operation possible
  • Fast running time
  • Flow direction AB to B without power

Series ZRS230 is a range of 3-way diverting motorized zone valve with spring return actuator for use in heating and cooling system. The ZRS230 series is available in DN15-32, PN16 with internal thread connection. The actuator is controlled by 2-point signal with spring return function and is recommended for diverting function, available for 230V AC, 50/60Hz power supply. The flow direction is AB to B without power.

The product is intended to be used in closed circuits only.

Product range

ZRS234, Internal thread

ZRS230 front_A-01.png
ZRS130 side_A-01.png Reference DN Kvs max. Differential pressure, Mixing [kPa] max. Differential pressure, Diverting [kPa] Connection A [mm] B [mm] D [mm] Weight [kg]
43123100 ZRS234 15 3,2 150 120 G ½" 80 103 29 1,02
43123200 ZRS234 20 4,6 100 80 G ¾" 89 103 32 1,07
43123300 ZRS234 25 5,7 100 80 G 1" 93 103 37 1,16
43123400 ZRS234 32 8,4 80 65 G 1¼" 105 110 45 1,58
Installation support

Installation examples

Installation examples


Technical data

Technical data

Pressure class: PN 16
Working pressure: 1,6 MPa
Connections: Internal thread (G), ISO 228/1 B
Power supply: 230V AC, 50/60 Hz
Power consumption: 6 VA
Control signal: 2-point (2-wire spring return)
Enclosure rating: IP44
Protection class: I
Running time: opening: 15 seconds;
closing: 5 seconds
Cable length: 1 meter
Media, Heating water: in accordance with VDI2035
Media, Water/Glycol mixtures: max. 50 %
Media, Water/Ethanol mixtures: max. 28 %
Media temperature, max.: +94 °C
Media temperature, min.: +2 ºC
Ambient temperature, max.: +60 °C
Ambient temperature, min.: 0 ºC
Material, Valve body: Brass CW 614N
Material, Ball: NBR
Material, O-rings: EPDM


PED 2014/68/EU, article 4.3/
SI 2016 No. 1105 (UK)
LVD 2014/35/EU
EMC 2014/30/EU
RoHS3 2015/863/EU
SI 2016 No. 1101
SI 2016 No. 1091
SI 2012 No. 3032


Please see Data sheet


Please see Installation instruction
Accessories and spare parts

Spare parts

Art No. Reference Designation
47120200 47120200 ZRS931 ESBE ZRS931 Actuator 2-point, 230V 3-way
Download area

Download area

Type Preview Download
Data Sheet ZRS230 download
Installation instruction ZRS230 download
Certificate Declaration of Conformity, ZRS230 download
Certificate Declaration of Conformity UKCA, ZRS230 download
Certificate Building Product Declaration BPD3, ZRS230 download
Certificate EAC certificate (RU), ZRS230 download
Certificate Certificate of conformity UA, ZRS230 download
Image ZRS234, high res download
2D Image ZRS234 download