When you are installing new water lines in your caravan there are several very important parts that you need The first part being the water line itself, but also very important are tube inserts John Guest manufactures a full line of plastic tubing and connectors, so of course they have a product that will meet your requirements Prevent tube collapse: Ensures the tubing remains rigid and round, maintaining a secure seal with the O-ring inside the John Guest fitting. Essential for hot water: While not always required for cold water, they are necessary for hot water applications to keep the softened tube in shape. Improves sealing: Reinforces the connection point, minimizing the risk of leaks. This tube insert fits into 12mm tubing Installation Time Reduced by 40% Increased maximum working temperature and pressure Truly Demountable Re-Usable No Tools Needed Genuine John Guest Brand Twist and Lock Range
