Actuador lineal ESBE ALFxx4 de 60 mm de carrera montado en su soporte
Actuador lineal ESBE ALFxx4 de 30 mm de carrera montado en su soporte
Plano frontal del actuador ESBE ALFxx4 con sus cotas
Plano lateral del actuador ESBE ALFxx4 con sus cotas
Actuador lineal ESBE ALFxx4 de 60 mm de carrera montado en su soporte
Actuador lineal ESBE ALFxx4 de 30 mm de carrera montado en su soporte
Plano frontal del actuador ESBE ALFxx4 con sus cotas
Plano lateral del actuador ESBE ALFxx4 con sus cotas
ESBE

ESBE ALFxx4 4 to 24 V linear actuator for control valves

Model
€983,75
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Shipping calculated at checkout.
  • 3 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 ALFxx4 24 V linear actuator for ESBE seat control valves

The ESBE ALFxx4 moves the stem of ESBE control valves with a 3-point or modulating signal, at 24 V and with a force of 600 to 2200 N. At Q-Tech, we mount it on your valve in the pre-assembled technical room, cable it and test it at our warehouse.

Summary

Type Electric linear actuator for seat valves
Brand and model ESBE ALFxx4 series: ALF134, ALF264, ALF364 and ALF464
Use Actuate ESBE linear control valves in heating, cooling and district networks
Force and stroke 600 N with 30 mm (ALF134); 1000, 1500 or 2200 N with 60 mm
Control signal 3-point at 24 V or modulating from 0 to 10 V, 2 to 10 V or 4 to 20 mA, with position feedback from 2 to 10 V
Power supply 24 V AC ±20 %, 50 or 60 Hz, or 24 V DC (from 22 to 30 V)
Protection IP54; ambient temperature from −10 to 50 °C
Q-Tech installation Mounted and tested on your valve in the Q-Tech pre-assembled technical room

What is the ESBE ALFxx4?

The ESBE ALFxx4 is a 24 V linear actuator for ESBE control valves that adjusts its stroke only to the valve's travel. With a modulating signal, it divides the stroke into 500 resolution steps, according to ESBE. It is mounted on the valve without a connection kit.

What problem does it solve?

A control valve regulates well when its actuator quickly follows the controller's command. The ALFxx4 travels the stroke in 15 to 30 s with a modulating signal (60 s in the ALF464), according to ESBE, and returns its position with a 2 to 10 V signal.

The force and stroke must correspond to the valve and the pressure of your circuit so that the regulation is stable. With the valve's DN and the differential pressure of your installation, we indicate the model.

Technical data

Type Electric linear actuator
Power supply 24 V AC ±20 %, 50 or 60 Hz, or 24 V DC (from 22 to 30 V)
Force 600, 1000, 1500 or 2200 N depending on the model
Stroke From 5 to 30 mm (ALF134) or from 5 to 60 mm
Modulating signal 0 to 10 V, 2 to 10 V, 0 to 5 V, 5 to 10 V, 2 to 6 V or 6 to 10 V DC, or 4 to 20 mA
3-point signal 24 V AC (neutral to 24 V AC or DC); travel time of 60 s
Time with modulating signal 15 s (stroke from 5 to 15 mm), 20 s (from 16 to 25 mm) and 30 s (from 26 to 60 mm); 60 s in the ALF464
Position feedback 2 to 10 V DC (0 to 100 %), only in modulating mode
Resolution 500 steps across the entire stroke
Duty cycle Maximum 50 % per hour
Protection IP54
Environment From −10 to 50 °C; maximum humidity of 90 % RH
Fluid temperature From −20 to 120 °C or from 0 to 150 °C, depending on the mounting position indicated by ESBE
Manual operation Manual lever: when lowered, the motor stops
Diagnostics Red and green LED under the cover
Materials Plastic cover and aluminum housing
Weight 1.5 kg
Compliance Directives 2014-35-EU (low voltage), 2014-30-EU (electromagnetic compatibility) and 2015-863-EU (RoHS)

Models and data by variant

Model Force Stroke Operating consumption Standby consumption Dimensions A and B Reference
ALF134 600 N 30 mm 13 VA and 6 W 11 VA and 5 W 216 and 228 mm 22201100
ALF264 1000 N 60 mm 18 VA and 8 W 11 VA and 5 W 240 and 252 mm 22201200
ALF364 1500 N 60 mm 21 VA and 11 W 13 VA and 7 W 240 and 252 mm 22201300
ALF464 2200 N 60 mm 25 VA and 10 W 25 VA and 4 W 240 and 252 mm 22201400

Compatibility and limits

  • Direct mounting on ESBE control valves VLE100, VLA100, VLF100, VLC100, VLC200, VLE300, VLA300 and VLB300, without connection kit, according to ESBE.
  • For Siemens valves (VVF 31, VXF 31, VVG 41 and others), ESBE offers the ALB841 adapter kit (26000200), which is not in this data sheet and is not suitable for the ALF134.
  • With fluid below 0 °C, ESBE requires the ALF802 stem heater.
  • ESBE ALF801 end-of-stroke contacts (26201100), optional and only in modulating mode; they are not in this data sheet.
  • Maximum duty cycle of 50 % per hour; indoor mounting with IP54.
  • Sold without valve.

When this product is not the right option

Product When to choose it Power supply Movement
ESBE ALFxx1 If your controller or panel operates at 230 V 230 V AC Linear
ESBE ARA600 3-point If your valve is an ESBE VRG or VRB rotary valve 230 or 24 V AC 90° rotation

Frequently asked questions

Which model do I need?

The ALF134 provides 600 N with 30 mm stroke; the ALF264, ALF364 and ALF464 provide 1000, 1500 and 2200 N with 60 mm. With the DN of your valve and the differential pressure, we indicate the model.

Does it include the valve?

No. The ALFxx4 is sold alone and is mounted directly on ESBE control valves.

What is the difference with the ALFxx1?

Only the power supply: the ALFxx1 operates at 230 V AC and the ALFxx4 at 24 V AC or DC. Forces, strokes and signals are the same, according to ESBE.

Does it work with a 0 to 10 V controller?

Yes. It accepts 0 to 10 V, 2 to 10 V, 4 to 20 mA and other ranges, as well as 3-point, and returns its position in 2 to 10 V.

Can I install it myself?

It is not recommended: the 24 V wiring must be done by a professional, following ESBE instructions. Q-Tech delivers it mounted in the technical room or installs it with an Expert Technician.

What is the delivery time?

We have it in stock in Málaga and we ship it as soon as we confirm the order.

Q-Tech installation and support

In the pre-assembled technical room, Q-Tech mounts the ALFxx4 on your valve, cables it to the controller and tests it at our warehouse: it arrives ready to connect. You can hire the warehouse pre-assembly, an Expert Technician on site by the hour or a technical call to choose the actuator. See also our valves and accessories or write to us via WhatsApp.

Documentation

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

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