ESBE ZRS234 3-way diverting valve with grey actuator and cable (ESBE photo)
Dimension drawing A, B and D of the ESBE ZRS230 valve, front and side view (ESBE data sheet)

ESBE ZRS230 motorised 3-way diverting zone valve with spring return

Model
Regular price€236,66
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  • 4 in stock
  • Backordered, shipping soon

At Q-TECH, we apply the same clear rules for everyone: the law protects you, and when applied correctly, it protects us as well. By processing your purchase, you accept our General Terms and Conditions of Sale. If you are purchasing as a consumer (B2C), nothing stated herein limits the rights granted to you by mandatory law (RDL 1/2007, TRLGDCU): the 3-year legal warranty of conformity and the right of withdrawal under the terms and with the exceptions legally provided, which are detailed below. References to "B2B" apply only to businesses and professionals.

Your guarantees

  • Rights intact: 14 days of withdrawal from receipt for most products—subject to the legal exceptions you will see below, such as goods made to your specifications—and a 3-year legal warranty of conformity, under the terms of the TRLGDCU.
  • Conformity with the description: we guarantee that the equipment will correspond to the published technical description and what one could reasonably expect from it (arts. 115 et seq. TRLGDCU). Images and videos are for guidance only: the manufacturer may supply a more recent revision of the product or introduce minor aesthetic, packaging, or firmware changes, without this constituting a lack of conformity as long as the described characteristics and performance are maintained.
  • Traceability that also protects you: we document the condition, serial number, and seal of each piece of equipment upon shipment, and we video-record the opening of returns; this is your proof of the condition in which the goods were delivered.

Responsible use and your part

  • If you are thinking of returning it, keep it as you received it: without installing or activating it, with its seals, accessories, and packaging intact. This is how to ensure a full refund, without deductions.
  • Handling that exceeds inspection reduces value: handling the equipment beyond what is necessary to verify its nature and operation may result in a real, assessed, and case-by-case justified deduction (art. 108.2 TRLGDCU), never a fixed percentage. In particular: activating or registering the serial number, linking it to a manufacturer's account or app, circulating water through hydraulic equipment, unsealing probes, or installing software or consumables. Initial inspection of the product does not lead to a deduction.
  • The same item must be returned: withdrawal requires returning the supplied unit. Different equipment, or equipment with prior use, age, or wear prior to purchase, does not constitute a valid withdrawal.
  • Installation and cybersecurity, shared responsibility: this is technical hardware; you are responsible for correct installation, credentials, patches, and backups, while we deliver a compliant product. Q-TECH is not liable for damages resulting from poor installation, incorrect configuration, or omission of patches by the customer or third parties (in B2C, without prejudice to the legal warranty and liability for intent or negligence, arts. 86 and 130 TRLGDCU).
  • Delivery of bulky goods: delivery is made to the curb. B2C: transport risk is ours until physical delivery (art. 66 ter); we recommend noting visible damages on the delivery note and notifying us of breakages within 24-48 hours with photographs to activate the insurance. B2B: inspection and notation on the delivery note are mandatory; hidden damages must be reported within 24 hours (art. 366 CCom). Unjustified rejection or incorrect shipping information will entail the actual outbound and return costs (approx. €85-550 for heavy machinery).

Made to your measure (Advanced Pre-Assembly)

  • If your order includes equipment, racks, hydraulic assemblies, or technical rooms made or configured according to your specifications (permanent joints, custom cuts or wiring, parameterization, pressure testing), these are custom goods without the right of withdrawal from the conclusion of the contract (art. 103.c TRLGDCU; CJEU Case C-529/19), which is informed before purchasing and documented in the signed Order Note. A test you request without permanent modification retains your right of withdrawal, with only the actual loss of value caused by that test being deducted. Would you prefer to receive it tested, configured, and ready to connect, without assuming these risks? Contract our Advanced Pre-Assembly or the prior technical audit.

If you are purchasing as a business or professional (B2B)

  • The transaction is governed by the Commercial Code: firm sale, without the right of withdrawal; notification of defects within 4 days (apparent) / 30 days (hidden), arts. 336 and 342. Q-TECH acts as a distributor and excludes indirect damages, loss of profit, and data loss, limited to the price of the equipment, without prejudice to the manufacturer's commercial warranty.

Product warnings v1.0 · June 2026. Information summary; the complete and binding conditions are those published at q-tech.es.

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ESBE ZRS230 motorised 3-way diverting zone valve for heating and cooling

The ESBE ZRS230 sends water to one of two circuits on a 2-point signal at 230 V and, when power is removed, returns to port B on its own. At Q-Tech we fit it in the pre-assembled plant room, tested in our workshop before it reaches your site.

Summary

TypeMotorised 3-way diverting zone valve
Brand and modelESBE ZRS230 series (ZRS234)
UseHeating and cooling, according to ESBE
FlowKv from 3.2 to 8.4 m³ per hour depending on DN
ConnectionInternal thread G ½ to G 1¼ (DN 15 to 32)
Power supply230 V AC, 50 or 60 Hz; 2-point control
With no powerSpring return to port B (AB to B)
Q-Tech installationIntegrated and tested in the Q-Tech pre-assembled plant room

What is the ESBE ZRS230?

The ESBE ZRS230 is a 3-way diverting zone valve for heating and cooling that springs back to port B if power is lost, according to ESBE. With power, the actuator opens the path from AB to A in 15 seconds. It accepts water with up to 50% glycol.

What problem does it solve?

In a system with two circuits, for example radiators and a domestic hot water cylinder, water has to go to one or the other according to demand. The ZRS230 makes that change on a 2-point signal from your controller or thermostat.

If the power fails, the spring moves the valve to port B in about 5 seconds, according to ESBE. The system is left in a known position: connect to port B the circuit that should stay open with no power.

Technical data

Pressure classPN16
Media temperature2 to 94 °C
Leakage rate0% (tight shut-off)
MediaWater, water with up to 50% glycol or up to 28% ethanol
Body materialCW614N brass
O-ringsEPDM
ConnectionsInternal thread G (ISO 228-1)
Actuator power supply230 V AC, 50 or 60 Hz
Power consumption6 VA
Control2-point with spring return
Running timeOpens in 15 s; spring closes in 5 s
ProtectionIP44; protection class I
Cable1 m
Ambient temperature0 to 60 °C
ConformityCE marking, with ESBE declaration of conformity

Models and data by variant

ModelConnectionDNKv (m³ per hour)Max. differential pressure as diverting valveMax. differential pressure as mixing valveDimensions A, B and DNet weightReference
ZRS234G ½ internal153.2150 kPa120 kPa80, 103 and 29 mm1.02 kg43123100
ZRS234G ¾ internal204.6100 kPa80 kPa89, 103 and 32 mm1.07 kg43123200
ZRS234G 1 internal255.7100 kPa80 kPa93, 103 and 37 mm1.16 kg43123300
ZRS234G 1¼ internal328.480 kPa65 kPa105, 110 and 45 mm1.58 kg43123400

Compatibility and limits

  • Maximum differential pressure of 150 kPa on DN 15 and 80 kPa on DN 32 as a diverting valve, according to ESBE.
  • With no power, flow is from AB to B; with power, from AB to A.
  • It needs a 2-point 230 V (on-off) signal from a controller or thermostat.
  • Media from 2 to 94 °C and ambient temperature from 0 to 60 °C, according to ESBE.
  • ESBE offers the ZRS931 replacement actuator (47120200), which is not on this page.

When this product is not the right choice

ProductWhen to choose itKv (m³ per hour)Power supply
ESBE ZRS220 2-wayIf you only need to open or close the flow to one zone3.2 to 10230 V, 2-point
ESBE VZD160 for heat pumpsIf you need a compact 3-second diverting valve for a heat pump or underfloor heating6.0230 V, 2-point
ESBE VTD300 thermostaticIf the circuit must change by temperature and with no electricity3.6None

Frequently asked questions

Which model do I need?

The one that matches your pipe size: from DN 15 (G ½) to DN 32 (G 1¼). Tell us about your installation and we will tell you the model.

What is the difference from the ZRS220?

The ZRS220 is a 2-way valve that opens or closes one zone. The ZRS230 is a 3-way valve that sends water to one of two circuits.

What happens in a power cut?

The spring moves the valve to port B in about 5 seconds, according to ESBE.

Can the actuator be replaced on its own?

Yes. ESBE sells the ZRS931 actuator as a spare part for the ZRS230 series.

Can I install it myself?

It is not advisable: a professional should install and wire it, following ESBE's instructions. Q-Tech delivers it fitted in the plant room or installs it with an Expert Technician.

What is the delivery time?

We have it in stock in Málaga and dispatch it as soon as we confirm your order.

Q-Tech installation and support

In the pre-assembled plant room, Q-Tech fits the ZRS230, wires it to your controller and tests it in our workshop: it arrives ready to connect. You can book workshop pre-assembly, an on-site hourly Expert Technician or a technical call to choose the size. See also our valves and accessories or message us on WhatsApp.

Documentation

Availability and lead times: this item is in stock at our warehouse. Occasionally, depending on the time of year, the stock update may contain an error. If no units are available when you place your order, we will order it urgently and inform you immediately of the updated delivery time.

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