JG Speedfit stop end fittings are designed for the efficient connection of plastic and copper pipes. Installation is straightforward: push the fitting onto the pipe and twist the nut clockwise to secure it. To demount, unlock the nut, push the collet towards the fitting body, and pull the pipe. These fittings are ideal for confined spaces and eliminate the need for hot works, reducing installation time by approximately 40% compared to traditional methods. For all plastic pipes, the appropriate manufacturer's pipe insert is required. The fittings offer an instant push-fit connection, can be installed and demounted in seconds without tools, and provide a safe, flame-free installation. They feature a 'Grip & Seal' collet with stainless steel teeth and a main O-ring seal, secured by a 'Twist & Lock' cap for added compression. Made from durable, non-toxic plastic, they resist corrosion and scale build-up. These fittings are compatible with Speedfit PEX and polybutylene plastic pipes (inserts required) and copper pipes, suitable for hot and cold water and central heating systems. They are Water Research Council Approved and British Gas Service approved for water pipes.