Description
KeyPlumb Expansion Vessel Mounting Kit
The ZL-4022-3/4 KeyPlumb Expansion Vessel Mounting Kit is a complete installation solution designed to securely mount and manage an expansion vessel within heating or unvented hot water systems.
This kit includes three essential components to ensure safe and efficient system operation. The 3 bar safety valve protects against over-pressurisation by releasing excess pressure when required. The automatic air vent (rated up to 10 bar) removes trapped air from the system, improving circulation and preventing common issues such as noise and reduced efficiency. The pressure gauge provides clear, real-time monitoring of system pressure, helping maintain optimal performance.
Ideal for both new installations and replacements, this kit supports system stability, improves efficiency, and reduces the risk of faults caused by pressure fluctuations or air build-up.
Key Features
- Complete expansion vessel mounting kit
- 3 bar safety valve for overpressure protection
- Automatic air vent (10 bar) removes trapped air
- Pressure gauge for real-time monitoring
- Improves system efficiency and circulation
- Suitable for heating and unvented hot water systems
Why This Kit Matters
- Maintains stable system pressure
- Prevents over-pressurisation damage
- Removes trapped air for better efficiency
- Provides accurate pressure monitoring
- Helps avoid system faults and breakdowns
Frequently Asked Questions
1. What systems is this kit suitable for?
It is suitable for heating and unvented hot water systems using an expansion vessel.
2. What does the 3 bar safety valve do?
It releases excess pressure if it exceeds 3 bar, protecting the system from damage.
3. Why is an automatic air vent included?
It removes trapped air automatically, improving system efficiency and preventing air locks.
4. How does the pressure gauge help?
It allows real-time monitoring of system pressure to ensure safe operation.
5. Can this be used for new installations?
Yes, it is suitable for both new installations and replacement setups.









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