Enhance your water heating experience with the Zip AQ2 Expansion Vessel and Check Valve. This essential component is designed for use with Zip's Storage Tank Water Heater range, ensuring a reliable and efficient heating system. The expansion vessel aids in regulating the pressure of your water heating system, whilst the check valve prevents the backflow of water, offering a safeguard to your appliance and plumbing.Easy to install and compatible with a variety of models, this accessory is a practical addition to your water heating infrastructure. Whether you are looking to replace an existing check valve or expand your system, the Zip AQ2 Expansion Vessel and Check Valve set is a steadfast choice for maintaining the performance of your water heating setup.