Threaded pipe installation and maintenance should pay attention to what

　　Device of screw thread pipe fittings and maintenance should pay attention to what

　　Threaded valve device, hand wheel, lever operated bellows valve can be installed in any position of the pipeline.

　　Handwheel, handle and machine Wei, do not allow for lifting.

　　Media flow should be different with the arrow direction of the valve body.

　　Threaded valve, also called cut-off doors, is the use of the most common of a valve, the reason why it is popular is because the process of opening and closing the sealing surface friction between the small, comparable to the durable, highly open small, easy to manufacture, easy maintenance, not only for in low pressure, but also for hypertension. Its closure principle is that relying on the valve bar pressure, so that the valve sealing surface and the valve seat sealing surface tight fit, to prevent the flow of media.

　　Threaded valve only one-way media activities, directional device. Its structure is greater than the length of the gate valve, while the fluid resistance, long-term operation, the sealing reliability is not strong.

　　Threaded valve is divided into three categories: straight, rectangular ramp and DC type valve.

　　Threaded valve opening, valve opening height, the nominal diameter of 25% ~ 30%, the flow has reached the maximum, that the valve has reached the full open position. So the full open position of the valve should be decided by the stroke of the valve.