Ferroli Optimax HE 31C HE Plus 18S 25S 35S Pressure Gauge 39818210 GenuineFerroli Boiler Pressure GaugeGenuine replacement pressure gauge designed for selected Ferroli Optimax HE and HE Plus boiler models. Ensures accurate monitoring of central heating system pressure for safe and efficient operation. Product Features: Genuine Ferroli spare part Part Number: 39818210 Boiler pressure gauge assembly OEM quality replacement component Displays system pressure accurately Reliable and durable construction Ideal for servicing and

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If none of these models match the appliance you have

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Trust in the Viessmann brand for top-notch heating solutions

Ending IN BC Issue 2)  – 47-077-07 BC Potterton Gold 24 HE A Combi (After Serial No BMX0815 & GNH0815)  – 47-393-18 Potterton Gold 24 HE A Combi (Before Serial No BMX0815 & GNH0815)  – 47-393-18 BEFORE Potterton Gold 28 HEA Combi (After Serial No BNF0932 & GNK0932)  – 47-393-19 Potterton Gold 28 HEA Combi (Before Serial No BNF0932 & GNK0932)  – 47-393-19 BEFORE Potterton Gold 33 HE A Combi (After Serial No GNL1112)  – 47-393-20 Potterton Gold 33 HE A Combi (Before Serial No GNL1112)  – 47-393-20 BEFORE Potterton Gold 24 Combi ErP (Serial No Ending AC)  – 47-393-43 Potterton Gold 24 Combi ErP (Serial No Ending BC & CC)  – 47-393-43 BC Potterton Gold 24 Combi ERP (Serial No Ending DC)  – 47-393-43 DC Potterton Gold 24 Combi ERP (Serial No Ending EC)  – 47-393-43 EC Potterton Gold 28 Combi ErP (Serial No Ending AC)  – 47-393-44 Potterton Gold 28 Combi ErP (Serial No Ending BC & CC)  – 47-393-44 BC Potterton Gold 28 Combi ERP (Serial No Ending DC)  – 47-393-44 DC Potterton Gold 28 Combi ERP (Serial No Ending EC)  – 47-393-44 EC Potterton Gold 28 Combi ErP LPG (Serial No Ending AC)  – 47-393-45 Potterton Gold 28 Combi ErP LPG (Serial No Ending BC & CC)  – 47-393-45 BC Potterton Gold 28 Combi ERP LPG (Serial No Ending DC)  – 47-393-45 DC Potterton Gold 28 Combi ERP LPG (Serial No Ending EC)  – 47-393-45 EC Potterton Gold 33 Combi ErP (Serial No Ending AC)  – 47-393-46 Potterton Gold 33 Combi ErP (Serial No Ending BC & CC)  – 47-393-46 BC Potterton Gold 33 Combi ERP (Serial No Ending DC)  – 47-393-46 DC Potterton Gold 33 Combi ERP (Serial No Ending EC)  – 47-393-46 EC Potterton Heatmax Combi 24 HE  – 47-393-27 Potterton Heatmax Combi 28 HE  – 47-393-28 Potterton Heatmax Combi 33 HE (After Serial No FMN1112)  – 47-393-29 Potterton Heatmax Combi 33 HE (Before Serial No FMN1112)  – 47-393-29 BEFORE Potterton Promax Combi 24 ERP (Serial No Ending AC)  – 47-393-47 AC Potterton Promax Combi 24 ERP (Serial No Ending BC & CC)  – 47-393-47 BC Potterton Promax Combi 24 ERP (Serial No Ending DC)  – 47-393-47 DC Potterton Promax Combi 24 ERP (Serial No Ending EC)  – 47-393-47 EC Potterton Promax Combi 28 ERP (Serial No Ending AC)  – 47-393-48AC Potterton Promax Combi 28 ERP (Serial No Ending BC & CC)  – 47-393-48 BC Potterton Promax Combi 28 ERP (Serial No Ending DC)  – 47-393-48 DC Potterton Promax Combi 28 ERP (Serial No Ending EC)  – 47-393-48 EC Potterton Promax Combi 33 ERP (Serial No Ending AC)  – 47-393-49 AC Potterton Promax Combi 33 ERP (Serial No Ending BC & CC)  – 47-393-49 BC Potterton Promax Combi 33 ERP (Serial No Ending DC)  – 47-393-49 DC Potterton Promax Combi 33 ERP (Serial No Ending EC)  – 47-393-49 EC Potterton Titanium 24 Combi Erp (Serial No