Description

Biasi BI1351118 Primary Circuit Pressure Switch – Fits Advance & Advance Plus Boilers

The Biasi Boiler Air Pressure Switch BI1351118 is a replacement part designed to monitor and maintain correct water pressure in your central heating system. This Biasi boiler primary circuit pressure switch part is essential for the safe operation of Biasi boilers and helps prevent damage caused by low pressure or water flow interruption.

This switch fits a wide range of Biasi Advance and Advance Plus boilers, including both combi and system models, and is identified by the manufacturer and GC numbers listed below.

Compatible Biasi Boilers & GC Numbers:

• Advance 25C – GC No. 47-583-43

• Advance 25S – GC No. 41-583-33

• Advance 30C – GC No. 47-583-44

• Advance 30S – GC No. 41-583-34

• Advance 35C – GC No. 47-583-45

• Advance Plus 16S ERP – GC No. 41-583-27

• Advance Plus 25C ERP – GC No. 47-583-35

• Advance Plus 25S ERP – GC No. 41-583-28

• Advance Plus 30C ERP – GC No. 47-583-36

• Advance Plus 30S ERP – GC No. 41-583-29

• Advance Plus 35C ERP – GC No. 47-583-37

If you’re looking for a Biasi air pressure switch follow the link provided.

Delivery and Return 

Order before 1 PM for same-day dispatch using Royal Mail or tracked courier services. Choose standard or next-day delivery at checkout. We accept returns within 30 days if the part remains unused and in original packaging.

For safe installation, always use a Gas Safe registered engineer.