Description

Biasi BI1182105 Expansion Vessel – Fits Riva Plus & Advance HE Boilers

Keep your boiler running safely and efficiently with this Biasi BI1182105 Expansion Vessel. This  part is engineered to maintain correct water pressure within your heating system, preventing overpressure and ensuring smooth operation. Ideal for replacing faulty or worn-out expansion vessels in several popular Biasi boiler models.

✅ Compatible with the following Biasi boilers and GC numbers:

Riva Advance HE M110.24SM/C – GC No. 47-970-29

Riva Advance HE M110.32SM/C – GC No. 47-970-30

Riva Advance Iso M110B.24SM/C – GC No. 47-583-11

Riva Plus M90D 24S – GC No. 47-970-15

Riva Plus M90D 24SR – GC No. 41-970-08

Riva Plus M90D 28S – GC No. 47-970-16

Riva Plus M90D 28SR – GC No. 41-970-09

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 

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.