OSO Hotwater 6 Litre Expansion Vessel 115800

The OSO Hotwater 6 Litre Expansion Vessel (115800) is a component designed for compatible OSO unvented hot water cylinders. It safely accommodates the natural expansion of water as it heats, helping to maintain the correct system pressure while protecting your cylinder, pipework, and safety valves from unnecessary stress.

Manufactured to the high standards expected from OSO, this potable water expansion vessel offers dependable performance, durability, and straightforward replacement for worn or faulty units. Whether you're carrying out routine maintenance or replacing a failed vessel, the OSO 115800 provides a reliable solution for domestic hot water systems.

Key Features

• OSO Hotwater expansion vessel
• Manufacturer part number: 115800
• 6-litre capacity
• Designed for potable (drinking) water systems
• Helps maintain correct operating pressure
• Protects unvented hot water cylinders and associated components
• Durable steel construction with internal diaphragm
• Suitable for compatible OSO unvented cylinders
• Reliable, long-lasting performance

Benefits

Replacing a faulty expansion vessel helps:

• Prevent pressure relief valve discharge
• Reduce stress on the hot water cylinder
• Maintain efficient system operation
• Extend the lifespan of system components
• Ensure consistent hot water performance

Technical Specifications