PPH pipe shearing is the basic process of manufacturing pipe parts, including pipe cutting, port shape punching, punching and incision. Pipe shearing is a stamping separation process. Compared with plate shearing, due to...
The selection of commonly used valves should be analyzed, considered and paid attention to from six aspects. 1. First of all, let's analyze the use requirements of the valve: ordinary ball valves, butterfly valves, and ...
Introduction of plastic globe valve The opening and closing part of the plastic globe valve (stop valve, Globe Valve) is a plug-shaped valve disc, the sealing surface is a plane or a conical surface, and the valve disc ...
Basic principles of flange bolt hole positioning The number of bolt holes in the flange and the diameter of the bolt holes are clearly specified. The number and diameter of flange bolt holes vary depending on the flange ...
(1) Orientation and location Many valves are directional, such as globe valve, throttle valve, pressure reducing valve, check valve, etc. If they are installed upside down, it will affect the use effect and life (such as...
Installation and use instructions of plastic ball valve Plastic ball valve installation instructions First of all, there is an arrow direction indication on the ball valve body, and the water flow direction is installe...