Grant Filling Loop Mpcbs30

Grant Filling Loop Mpcbs30

A component used in Grant heating systems to facilitate the filling and pressurization of the central heating system with water. It allows users to add water to the system when needed, ensuring that the correct water pressure is maintained for efficient and safe operation. The filling loop is a crucial tool for initial installation, servicing, and maintenance, helping to keep the heating system properly filled and functioning optimally.

Compatible with the following boilers:

• Grant Combi MK2
• Grant Combi V3
• Grant Vortex pro condensing combi
• Grant Euroflame
• Grant Multipass

Grant Filling Loop – MPCBS30

Genuine Filling Loop Kit for Grant Vortex and Vortex Pro Boilers

The Grant MPCBS30 Filling Loop is a genuine OEM component designed for safe, efficient topping up of the central heating system pressure in Grant oil boilers. This part connects the mains cold water supply to the sealed central heating circuit, allowing installers and homeowners to refill the system when pressure drops.

Suitable for a wide range of Grant Vortex and Vortex Pro system and combi boilers, this filling loop ensures compliance with building regulations by including a double check valve and isolating valve, helping to protect the mains water supply and prevent backflow contamination.

 Key Features & Benefits

• Official Grant Part – MPCBS30
  Designed and manufactured to Grant’s specifications for guaranteed fit and reliability.

• Complete Filling Loop Assembly
  Includes braided flexible hose, isolation valve, and double check valve for safety and convenience.

• Safely Re-pressurises Sealed Systems
  Provides a temporary connection between mains water and the heating system for refilling.

• WRAS-Compliant Components
  Meets water safety regulations with integrated backflow protection.

• Easy to Use
  Simple lever valves allow quick and controlled filling by heating engineers or competent homeowners.

• Durable, Long-Lasting Construction
  Made with high-quality materials to resist corrosion, limescale, and pressure stress.

  Compatible Grant Boiler Models

The MPCBS30 Filling Loop is compatible with a wide range of Grant boilers, including:

• Grant Vortex System Boilers (15–36kW)

• Grant Vortex Pro System Boilers

• Grant Vortex Combi Boilers

• Any Grant sealed system using an external filling loop kit

Not sure if this is the right loop for your setup? Contact our support team with your boiler model or serial number—we’ll be happy to confirm.

When Should You Replace the Filling Loop?

Replace your filling loop if:

• The existing unit is leaking, stiff, or cracked

• The check valve no longer seals properly

• The braided hose shows corrosion, fraying, or scale build-up

• You're replacing or upgrading your boiler or control valves

A faulty filling loop can lead to pressure issues, water damage, or contamination of the potable supply—replace it to stay compliant and safe.

 Technical Specifications

• Part Number: MPCBS30

• Manufacturer: Grant UK

• Type: External filling loop with braided hose

• Components: Flexible hose, isolating valve, double check valve

• Compliance: WRAS approved (meets water supply regulations)

• Function: Temporary connection for re-pressurising sealed heating systems

• Installation: Easily installed between mains supply and boiler heating circuit