The role of PPR gate valve, globe valve and ball valve: gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled; globe valve can be used for cutting off or throttling; ball valves are mainly used for cutting off distribution and changing media in pipelines direction of flow. It only needs to rotate 90 degrees and a small torque to close tightly. Ball valves are most suitable for on-off shut-off valves.
