Grant Flow Switch Mpcbs71Nt Vortex 36 Pre 15/05/08

VKX20M1Grant01 Square Head Paddle

The Grant Flow Switch MPCBS71NT is a genuine replacement flow detection unit designed for early-model Grant Vortex 36 boilers manufactured before 15/05/2008. This component monitors system water movement and signals the boiler to fire when heating demand is present.

A worn or faulty flow switch can cause intermittent firing, lockouts, or no heat response. Replacing it with the correct MPCBS71NT unit restores accurate flow sensing and reliable boiler operation.

Key Features

• Genuine Grant MPCBS71NT flow switch

• Designed specifically for Vortex 36 pre-May 2008 boilers

• Provides reliable detection of system water flow

• Ensures correct boiler response to heating demand

• Helps prevent lockouts, short cycling, and ignition issues

• Durable hydraulic and electrical components

• Direct-fit OEM replacement

Compatibility

• Grant Vortex 36

• Applicable ONLY to boilers manufactured before 15/05/2008

• OEM replacement for flow switch MPCBS71NT
  (If you want the post-2008 version added as a separate product, I can create that too.)

When to Replace

• Boiler does not fire when system calls for heat

• Intermittent or unstable operation

• Flow switch sticking, leaking, or electrically faulty

• During routine servicing when the switch shows signs of wear

Technical Specifications

• Manufacturer: Grant

• Part Number: MPCBS71NT

• Component: System flow switch

• Application: Grant Vortex 36 (pre-15/05/2008)

• Function: Detects water circulation to activate burner demand