Globe Valve is the most widely used block valve in chemical production. Compared with the above three block valves, it is not opened by the rotation of its closed parts to close the valve, but use the valve rod to lift and drive the circular valve disc (valve head) connected with it, and change the distance between the valve disc and the valve seat to control the opening and closing of the valve.
Streamline Globe Valve American Standard Globe Valve
Features: the upper part of the Globe Valve is provided with a hand wheel and a valve stem, and the middle part is provided with a thread and a packing culvert sealing section. The thread on the valve stem of a small valve is in the valve body, which has a compact structure,
However, there are many parts in contact with the medium, especially the threaded part is easy to corrode. The opening degree of the valve can be judged from the height of the valve stem exposed to the bonnet. In order to prevent the medium from leaking along the valve stem,packing can be used to seal the part where the valve stem passes through the bonnet.
The structure of the Globe Valve is complex, but the operation is simple and effortless. It is easy to adjust the flow and cut off the channel. It starts and closes slowly without water hammer, so it is widely used.
When installing the Globe Valve, pay attention to the fluid direction, and make the pipeline fluid flow through the valve seat from bottom to top, and the so-called “low in and high out” is to reduce the fluid resistance,
The valve stem and packing culvert shall not contact with the medium when they are opened and closed, so as to ensure that the valve stem and packing culvert will not be damaged and leaked.
The Globe Valve is mainly used for pipelines of water, steam, compressed air and various materials. It can accurately adjust the flow and strictly cut off the channel, but it can not be used for pipelines with high viscosity and crystallized materials easily .
