Description

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

The Biasi BI1351118 Primary Circuit Pressure Switch is a replacement part designed to monitor and maintain correct water pressure in your central heating system. This 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.

Why Choose This Product?

This BI1351118 pressure switch helps protect your boiler by monitoring internal pressure levels accurately. If the pressure drops too low or rises too high, the boiler won’t operate. That prevents long-term damage and ensures user safety. Biasi’s durable design offers dependable performance and quick installation. This part solves many common pressure-related faults without replacing the full diverter system.

Delivery and Return Information

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.