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Potterton Cartridge Repair Kit (720003100)
The Potterton Cartridge Repair Kit is the central internal mechanism of the diverter valve, engineered to control the flow of water between your central heating and domestic hot water circuits. When the diverter motor is activated, it moves this cartridge to prioritize hot water delivery to your taps and showers. Replacing this internal unit is the professional method for fixing valves that have become stiff or blocked by system debris, ensuring your boiler switches between modes without "let-by" (heat escaping to radiators when not required).
Fluid Directional Priority: Ensures the boiler correctly prioritizes hot water demand over central heating for immediate comfort.
High-Temperature Seals: Features durable O-rings and internal gaskets designed to maintain a watertight seal under extreme thermal stress.
Robust Construction: Manufactured to resist the corrosive effects of system sludge and limescale buildup, extending the lifespan of the hydraulic block.
Genuine Compatibility: A precise replacement for part number 720003100 (also cross-compatible with 248733 and 7656807).
Compatible Models:
Potterton GOLD 24 HEA COMBI (AFTER SERIAL NO BMX0815 & GNH0815)
Potterton GOLD 24 HEA COMBI (BEFORE SERIAL NO BMX0815 & GNH0815)
Potterton GOLD 28 HEA COMBI (AFTER SERIAL NO BNF0932 & GNK0932)
Potterton GOLD 28 HEA COMBI (BEFORE SERIAL NO BNF0932 & GNK0932)
Potterton GOLD 33 HEA COMBI (AFTER SERIAL NO GNL1112)
Potterton GOLD 33 HEA COMBI (BEFORE SERIAL NO GNL1112)
Potterton Gold 24 Combi ErP (Serial no Ending AC)
Potterton Gold 24 Combi ErP (Serial no Ending BC & CC)
Potterton GOLD 24 COMBI ERP (SERIAL NO ENDING DC)
Potterton Gold 28 Combi ErP (Serial no Ending AC)
Potterton Gold 28 Combi ErP (Serial no Ending BC & CC)
Potterton GOLD 28 COMBI ERP (SERIAL NO ENDING DC)
Potterton Gold 33 Combi ErP (Serial no Ending AC)
Potterton Gold 33 Combi ErP (Serial no Ending BC & CC)
Potterton GOLD 33 COMBI ERP (SERIAL NO ENDING DC)
Potterton HEATMAX COMBI 24 HE
Potterton HEATMAX COMBI 28 HE
Potterton HEATMAX COMBI 33 HE (AFTER SERIAL NO FMN1112)
Potterton HEATMAX COMBI 33 HE (BEFORE SERIAL NO FMN1112)
Potterton PROMAX COMBI 24 ERP (SERIAL NO ENDING AC)
Potterton PROMAX COMBI 24 ERP (SERIAL NO ENDING BC & CC)
Potterton PROMAX COMBI 24 ERP (SERIAL NO ENDING DC)
Potterton PROMAX COMBI 28 ERP (SERIAL NO ENDING AC)
Potterton PROMAX COMBI 28 ERP (SERIAL NO ENDING BC & CC)
Potterton PROMAX COMBI 28 ERP (SERIAL NO ENDING DC)
Potterton PROMAX COMBI 33 ERP (SERIAL NO ENDING AC)
Potterton PROMAX COMBI 33 ERP (SERIAL NO ENDING BC & CC)
Potterton PROMAX COMBI 33 ERP (SERIAL NO ENDING DC)
Potterton PROMAX COMBI 24 HE PLUS A
Potterton PROMAX COMBI 28 HE PLUS A
Potterton PROMAX COMBI 33 HE PLUS A
Potterton Titanium 24
Potterton Titanium 28
Potterton Titanium 33
Potterton Titanium 40
Potterton Titanium 24 combi Erp (serial no. ending in AC)
Potterton Titanium 24 combi Erp (serial no. ending in BC & CC)
Potterton Titanium 24 combi Erp (serial no. ending in DC)
Potterton Titanium 28 combi Erp (serial no. ending in AC)
Potterton Titanium 28 combi Erp (serial no. ending in BC & CC)
Potterton Titanium 28 combi Erp (serial no. ending in DC)
Potterton Titanium 33 combi Erp (serial no. ending in AC)
Potterton Titanium 33 combi Erp (serial no. ending in BC & CC)
Potterton Titanium 33 combi Erp (serial no. ending in DC)
Potterton Titanium 40 combi Erp (serial no. ending in AC)
Potterton Titanium 40 combi Erp (serial no. ending in BC & CC)
Potterton Titanium 40 combi Erp (serial no. ending in DC)
Potterton
A00580-03