The all-new HepKey Plus™ system makes demounting quicker, easier and more secure than ever before. The HepKey Plus™ simply clips around the pipe and depresses the inner sleeve of the fitting. This opens the grab-ring and releases the pipe. This means the fitting is tamper-proof, as it can only be demounted with the HepKey Plus™. So as well as demounting being fast and simple, the fitting is completely secure.