1. needle Globe Valves
As for precise flow control. Disc is usually made into a whole with stem, it has a needle head witch matches the seat with very high accuracy, the. And needle cut-off valve stem threads pitch is thinner than ordinary globe valve stem screw pitch. Normally, the size of the hole of the needle valve seat is smaller than pipe size. Therefore, it is usually confined to nominal size of the pipeline in small, more applicable for sampling valve.
2. straight-flow Globe Valves
straight-flow globe valve stem and channel is in a certain Angle, its seat sealing surface and import channel also have a certain Angle, the body can make integral or separate. The separate type cut-off valve is to clip the seat between the bodies, convenient in maintenance. This kind of globe valves make fluid flow direction almost no change, and is the smallest flow resistance in the globe valve. Seat and disc sealing surface can bead weld cemented carbide, make whole valve more resistant to corrosion and erosion, in conformity with the production process of alumina pipeline control, also suitable for pipeline with coke and solid particles in it.
3 horny pattern globe valves
the biggest advantage of horny pattern globe valves is that the valve installed in the corner of the pipeline system, such as saving the 90