Baxi Flow Regulator — Part No. 7211822 (12 L/min)

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Baxi 7211822 Flow Regulator — 12 L/min

Restore reliable hot-water performance on popular Baxi/Main/Potterton boilers. This OEM brass 12 L/min flow regulator sits in the DHW inlet assembly to stabilise incoming flow so the boiler fires and modulates correctly.

Key Features

  • Factory spec: Genuine Baxi cartridge, 12 litres/minute rating.
  • Durable brass body: Spring-loaded insert with integrated O-ring for a positive seal.
  • Quick swap: Direct replacement for the original part—no re-piping.

Typical Compatibility*

  • Baxi Duo-tec Combi 28/33 HE A, Platinum Combi 28 HE A (and related HE A families)
  • Main & Potterton equivalents where a 12 L/min regulator is specified

*Model coverage can vary by production run; always confirm by matching the exact part number 7211822 to your boiler’s exploded diagram or parts list.

Symptoms pointing to a failed/incorrect regulator

  • Hot water temperature “hunting” or cutting out at taps
  • Boiler doesn’t fire for DHW at low/normal flow rates
  • Intermittent DHW with no other sensor or gas issues

What's in the box

  • 1 × Flow Regulator Cartridge — Baxi 7211822 (12 L/min)

Installation & Safety

Isolate power and water, depressurise, then replace the cartridge and check for leaks and correct DHW operation. This work must be carried out by a qualified, Gas Safe registered engineer.

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