Acumulador Hidroneumático AMR de Ibaiondo - Sin Patas - Q-Tech 2024-2025®
Acumulador Hidroneumático AMR de Ibaiondo - Con Patas - Q-Tech 2024-2025®

Ibaiondo CMF Expansion Vessel for Heating

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Regular price€31,62
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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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The Ibaiondo CMF heating expansion vessel is the essential professional solution for efficient pressure management in closed HVAC systems. Designed with a fixed membrane, this component ensures maximum safety and durability in heating and cooling installations. It is the technical choice that minimizes the risk of malfunctions, extending the service life of the entire system.

Key Benefits of the CMF Expansion Vessel

This expansion vessel not only complies with regulations but is also designed to provide superior performance without constant maintenance.

  • Extreme System Protection: It compensates for water volume increases due to temperature, preventing overpressure that damages the boiler and circuit components.

  • Operational Savings: It reduces the need for purging and the risk of air intake, optimizing the equipment's energy consumption.

  • Certified Reliability: CE certified product according to Directive 97/23/EC, ensuring compliance with European safety standards.

  • Maximum Resistance: Finished with red epoxy paint and a galvanized water connection (5 to 35 CMF models) for high corrosion resistance.


Detailed Technical Specifications

Construction and Operational Features

  • Use: Closed heating and cooling systems.

  • Membrane Type: Fixed, non-replaceable (non-potable). Complies with EN 13831.

  • Connection Material: Galvanized steel (for 5 to 35 CMF models).

  • Working Temperature Range: From -10ºC to +100ºC.

  • External Finish: Protective epoxy paint, red color.

  • Factory Air Pre-charge: 1.5 bar

Maximum Operating Pressures (PS)

Capacity (Liters) Maximum Pressure (bar)
8 to 35 5
50 4
80 to 200 6

Available Models and Installation Options

The Ibaiondo CMF expansion vessel adapts to any flow and space requirement thanks to its wide range of models.

  • Compact Models (5 to 35 liters): No support legs, ideal for mounting in tight spaces.

  • Large Capacity Models (35 to 400 liters): Include legs, facilitating a stable and robust vertical installation.

Ibaiondo CMF heating expansion vesselEssential Technical Documentation:

Access detailed information for proper planning and installation.


Frequently Asked Questions (FAQ)

What is the difference between a fixed membrane expansion vessel and a replaceable one?

A fixed membrane vessel, such as the Ibaiondo CMF model, is considered a sealed component and does not allow for the replacement of the internal rubber membrane. If the membrane fails, the entire vessel must be replaced. They are more economical for standard installations where periodic maintenance of the vessel is less critical.

What is the optimal temperature range for the CMF installation?

This vessel is designed to operate efficiently with fluid temperatures between -10ºC and +100ºC, making it compatible with the vast majority of residential and industrial heating and cooling systems.

How do I check the 1.5 bar pre-charge before installation?

It is essential to check the factory pre-charge pressure with an air pressure gauge before connecting the vessel to the system. If the pressure differs from 1.5 bar (the recommended pressure for most domestic systems), it must be adjusted according to your boiler manufacturer's specifications and the static height of the installation.


📞 Specialized Technical Support

Do you need assistance with the sizing or installation of the Ibaiondo CMF heating expansion vessel? Our team of engineers is available to provide technical support by phone or in person. Contact our specialists to ensure seamless integration and maximum performance for your HVAC system.

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