Quick to connect screw down mains stop valve JG Speedfit stop valve allows the user to stop the flow of water to a fixture or zone in the event of an emergency or for repair work. Simply push the valve fully onto the pipe. To demount the push-fit end, pull the collet towards the body of the push-fit fitting and pull the pipe to release. The push-fit fitting is quicker and easier to install in confined spaces than traditional methods as it eliminates the need for hot works or tools. Designed, manufactured and assembled in the UK. Features and benefits Compact design is ideal for installing in areas where space is tight Instant push-fit connection and screw down mains stop valve Install and demount in seconds without tools Safe flame-free installation, with no hot works, glue or flux Grip & Seal™ collet with stainless steel teeth and main O-Ring seal Compatible with Speedfit PEX and polybutylene plastic pipe (inserts required) and copper pipe Suitable for hot and cold water (not suitable for central heating systems)