The aqua stop hose connector has an internal valve that stops the water flow when an accessory eg a spraygun is disconnected this saves having to go back to the tap to turn the water off when switching between accessories it also helps save water in the garden by stopping the water flow thus preventing water being wasted all internal parts are made from ultra tough engineering plastics for a long leak free life and the connection to the tap is guaranteed secure up to 10 bar thanks to a triple lo