Grant Mixer Valve combi Mpcbs22Fx

Same as Heating World Grandee W/H Combi HW10000

Grant Mixer Valve Combi

This part is based around the diverter valve section. It allows the hot water to be redirected to the central heating system (radiators, etc.) or to the domestic hot water system (taps, etc.). The diverter valve is directional water device that only appears in combi boilers.

This feature is what separates a normal boiler from a combi boiler due to the fact that a combi boiler wouldn't require a cylinder to provide heating and hot water.

• Suitable for: Combi MKII, Combi V3, Vortex Pro Combi
• Grant Mixing Valve (MPCBS22F).
• Compatible With: Grant Vortex Pro Condensing Combi, Combi V3 & Combi MKII
• Fits the Grant Combi V3.
• Fits the Grant Vortex pro Condensing Combination.

Grant Mixer Valve Combi – MPCBS22FX

Genuine Hot Water Mixing Valve for Grant Combi Boilers

Ensure safe and consistent domestic hot water temperatures with the Grant Mixer Valve MPCBS22FX. This genuine Grant mixing valve blends hot and cold water to deliver a stable outlet temperature, protecting users from scalding while maintaining hot water system efficiency. It plays a key role in temperature regulation within the domestic hot water (DHW) circuit of Grant oil-fired Combi boilers.

Whether you're replacing a faulty valve or upgrading during a routine service, the MPCBS22FX is the trusted choice for engineers and DIYers alike, ensuring reliable performance and long-lasting safety.

 Key Features & Benefits

• Genuine Grant Part – MPCBS22FX
  Official manufacturer-approved mixing valve for combi boiler DHW systems.

• Accurate Temperature Regulation
  Automatically blends hot and cold water to a consistent and safe output temperature.

• Prevents Scalding
  Enhances safety by ensuring domestic hot water never exceeds recommended user temperatures.

• Improves Hot Water Efficiency
  Helps boilers maintain target flow temperatures with minimal fluctuation or heat loss.

• Robust & Durable Design
  Built from corrosion-resistant brass and high-grade polymers to withstand long-term use.

• Easy to Fit & Replace
  Compact design with standard connections makes installation quick and simple.

 Compatible Grant Boiler Models

The MPCBS22FX Mixer Valve is typically fitted to the domestic hot water circuit of the following Grant Combi Boilers:

• Grant Vortex Pro Combi 21kW

• Grant Vortex Pro Combi 26kW

• Grant Vortex Pro Combi 36kW

• May also be used in earlier Vortex Combi MK2 and MK3 models (check part code or manual for compatibility)

If you're unsure whether this part fits your boiler, our expert team is happy to assist—just provide your model or serial number.

 When to Replace the Mixer Valve

You should consider replacing the MPCBS22FX mixer valve if:

• The hot water temperature fluctuates or is inconsistent

• Water comes out too hot or too cold, regardless of settings

• The existing valve shows corrosion, leakage, or limescale build-up

• You're carrying out a major DHW circuit service or replacement

Replacing a faulty mixer valve helps restore safe, stable water temperatures and improves user comfort and boiler efficiency.

 Technical Specifications

• Part Number: MPCBS22FX

• Manufacturer: Grant UK

• Type: Domestic hot water thermostatic mixing valve

• Material: Brass body with thermostatic control mechanism

• Connection Size: 22mm compression

• Temperature Range: Adjustable – typically 35°C to 60°C outlet

• Application: Domestic hot water blending in sealed combi systems

• Mounting: Inline fitting within DHW circuit of boiler