Baxi SB Series bronze DHW recirculation circulator, front view
BAXI

Baxi SB Series bronze DHW recirculation circulator pump

Model
€253,83
/
Tax included. Shipping calculated at checkout.
  • 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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Baxi circulator pump that brings hot water to every tap sooner

The Baxi SB Series is Baxi's range of bronze circulators for domestic hot water recirculation. Q-Tech integrates it into its pre-assembled plant room, built and tested in the workshop together with the cylinder and the return valves, so that only the final connection is left on site.

Summary

TypeCanned rotor circulator pump for DHW recirculation
Brand and modelBaxi SB Series: SB-5 Y, SB-10 YA, SB-50 XA, SB-100 XL and SB-150 XL
UseDomestic hot water recirculation circuits
Maximum flowFrom 1.5 to 9.5 m³ per hour, depending on the model
Maximum headFrom 0.8 to 9 m, depending on the model
Connection20-22 solder union (SB-5 Y and SB-10 YA) or 1" union (SB-50 XA, SB-100 XL and SB-150 XL)
Power supplySingle-phase 230 V
Q-Tech installationIntegrated into a pre-assembled plant room or installed by an on-site Expert Technician (Pre-Montaje Avanzado)

What is the Baxi SB Series?

The Baxi SB Series is a range of Baxi circulator pumps for domestic hot water recirculation circuits that moves up to 9.5 m³ per hour. Its canned rotor motor drives the water around the return loop. It is always installed after the draw-off points.

What problem does it solve?

In a system without recirculation, the water cools down in the pipe and the user waits with the tap open until it runs hot. The Baxi SB Series keeps the water moving around the return loop, so hot water reaches the tap sooner.

A circulator chosen without considering the loop flow, the water hardness or the electrical protection has a shorter life. Baxi sets a maximum water hardness for this range and requires a motor protection switch on the SB-150 XL; Q-Tech checks this before fitting it.

Technical data

Maximum operating pressure10 bar
Maximum operating temperature60 °C (65 °C on the SB-100 XL)
Short-term temperatureUp to 80 or 110 °C for 2 hours, depending on the model
Power supplySingle-phase 230 V
MotorCanned rotor, self-protected against overload
Motor protection switchNot required, except on the SB-150 XL (mandatory)
Pump body and motor supportBronze (stainless steel on the SB-100 XL)
Electrical protectionIP 43 (SB-5 Y, SB-10 YA and SB-50 XA) and IP 44 (SB-100 XL and SB-150 XL)
Maximum water hardness35 °f (19 °d); 32 °f (17 °d) on the SB-100 XL
OtherEthylene-propylene membrane against limescale deposits, rotation check and venting

Models and data by variant

ModelConnectionPort-to-port lengthMax. flow (m³ per hour)Max. headSpeedsPower inputProtectionNet weightReference
SB-5 Y20-22 solder130 mm1.50.8 m130 WIP 432 kg195000019
SB-10 YA20-22 solder130 mm32.5 m327, 39 and 56 WIP 432 kg953030121
SB-50 XA1"180 mm5.55.5 m370, 102 and 114 WIP 432.8 kg953035021
SB-100 XL1"180 mm5.56.5 m3122, 167 and 183 WIP 443.2 kg195000005
SB-150 XL1"180 mm9.59 m2295 and 335 WIP 446.7 kg195000048

Compatibility and limits

  • For domestic hot water recirculation circuits up to 10 bar.
  • Maximum water hardness of 35 °f (32 °f on the SB-100 XL); with harder water, Baxi requires prior treatment.
  • Fitted on the loop return, after the draw-off points, on horizontal or vertical pipework.
  • The SB-150 XL needs a motor protection switch; the other models are self-protected against overload.
  • 20-22 solder connection on the SB-5 Y and SB-10 YA; 1" union on the SB-50 XA, SB-100 XL and SB-150 XL.

When this product is not the right choice

  • If the circuit is for heating rather than domestic hot water, Baxi offers the high-efficiency Quantum MAXI range.
  • If you only need to move the return loop of a single home, the Baxi SB-4X is a compact brass circulator, with a pre-fitted shut-off and non-return valve and a 1 m maximum head, according to Baxi.
  • If you are looking for a DHW circulator with electronic control or time programming, the SB Series runs at a fixed selectable speed; see the Baxi circulator pumps collection.
  • If the water is harder than the maximum, water treatment is needed first.

Frequently asked questions

Which model do I need?

It depends on the flow and head your return loop requires. The SB-5 Y and SB-10 YA cover small loops with a 20-22 solder connection, and the SB-50 XA, SB-100 XL and SB-150 XL cover higher flows with a 1" union.

Where is it installed?

On the return of the hot water loop, always after the draw-off points. Baxi allows mounting on horizontal or vertical pipework.

Does it need a motor protection switch?

Only the SB-150 XL. The other models have a motor that is self-protected against overload.

What water hardness does it accept?

Up to 35 °f, and 32 °f on the SB-100 XL. With harder water, Baxi requires prior treatment to keep the warranty.

What is the delivery time?

We have it in stock at our warehouse; if no units are left when you order, we order it urgently and inform you of the updated lead time.

Can I install it myself?

Baxi states that it must be installed by qualified personnel. Q-Tech can integrate it into its plant room or install it on your site.

Q-Tech installation and support

With the pre-assembled plant room, Q-Tech fits the SB Series in its workshop with the cylinder, valves and controls, and delivers it tested and ready to connect: only the final connection is left on site. More information on Pre-Montaje Avanzado and the workshop pre-assembly service.

If the system already exists, an on-site hourly Expert Technician replaces or integrates the circulator. To choose the model with your loop data, you can book a technical call (a paid service). See also the recirculation pumps collection or message us on WhatsApp.

Documentation

SB Series on baxi.es: installation manuals by model, declaration of conformity and price catalogue (in Spanish)

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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