• Potterton Gold Combi 24/28/30 HE
• Potterton Heatmax Combi 24/28/33 HE
• Potterton Performa 24 / 24 Eco HE / 28 / 28 I / 30 HE
• Potterton Performa System 12/18/24/28 E/HE
• Potterton Promax 12/15/18/24/32 HE Plus A System
• Potterton Promax 24 HE Plus LPG System
• Potterton Promax 24 HE Plus System
• Potterton Promax 24 HE System
• Potterton Promax Combi 24 HE Plus / 24 HE Plus A / 24 HE Plus LPG
• Potterton Promax Combi 28 HE Plus / 28 HE Plus A
• Potterton Promax Combi 28/33 HE Plus
• Potterton Promax Combi 33 HE Plus / 33 HE Plus A

Potterton Tap Isolation Return 248225 is fitted underneath the boiler, and it allows the user to control the flow of water in to the central heating system. This also allows you to stop the flow completely in case of a leak or emergency. Some engineers refer to this vale as Potterton isolation valve, central heating valve, heating tap, Boiler flow and return valve. Potterton Tap Isolation Return 248225 is a Genuine Baxi Spare Part.