Metric PVC Plain to Threaded Double Union Ball Valve
TechTalk about Threads on Valves
All our threaded valves are BSP Tapered Female threads. The reason for supplying tapered threads is that most of the fittings that are threaded into valves, such as hosetails, compression fittings, camloks and other pvc fittings themselves, are usually male tapered BSP threads. Applying a tapered thread to another tapered thread gives a much better seal than a taper to a parallel.