Successfully delivery of 20” high pressure metal seat ball valve- the destination is Chile

Recently, through the joint efforts of various departments of Weidouli, the 42-inch gate valve independently developed and produced by Weidouli was successfully developed and delivered!This success ma...

Ⅰ. Ball valves1. The working principles of ball valvesThe definition of a ball valve is a valve in which the opening and closing part (ball) is driven by the valve stem and rotates around the axis of...

The working principle of check valveThe check valve is used in pipeline systems. Its main function is to prevent the backflow of the medium, prevent the pump and its driving motor from reversing, and ...