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What are the characteristics of stainless steel globe valve? How should it be installed and maintain

Posted by Bundor valve
The stainless steel globe valve is a forced seal valve. When the valve is closed, the sealing surface must be forced to prevent leakage by applying pressure to the disc. When the medium enters the valve from the bottom of the valve flap, the resistance that the operating force needs to overcome is the friction force of the valve stem and the packing and the thrust force generated by the pressure of the medium. The diameter should be large, otherwise the failure to bend the valve stem will occur.

stainless steel globe valve

The stainless steel globe valve is one of the most popular valves sold by Bundor Valve recently. Many customers have chosen the stainless steel globe valve for their own projects. However, they do not have a comprehensive understanding of the stainless steel globe valve :

1. The structure of the stainless steel globe valve is simpler than the gate valve, and it is more convenient to manufacture and maintain.

2. There is no relative sliding between the disc and the sealing surface of the valve body when the stainless steel globe valve is opened and closed, so the wear and abrasion are not serious, the sealing performance is good, and the service life is long.

3. When opening and closing, the valve flap stroke of the stainless steel globe valve is small, so the height of the globe valve is smaller than the gate valve, but the structural length is longer than the gate valve.

The globe valve also has some shortcomings, which may cause inconvenience to your project. Pay more attention during use:

1. The opening and closing torque is large, the opening and closing is more laborious, and the opening and closing time is principal.

2. The fluid resistance is large, due to the tortuous medium channel in the valve body, the fluid resistance is large, and the power consumption is large.

3. Media flow direction: when the nominal pressure PN≤16MPa, generally use co-current flow, the medium flows upward from below the valve flap; when the nominal pressure PN≥20MPa, generally use reverse flow, the medium flows downward from the valve flap. To increase the sealing capacity. When in use, the shut-off valve medium can only flow in one direction, and the flow direction cannot be changed.

Proper installation and maintenance can effectively extend the life of the valve. Bundor Valve introduces the installation and maintenance precautions of the stainless steel globe valve:

1. The cut-off valve operated by hand wheel and handle can be installed at any position of the pipeline.

2. Handwheel, handle and rotating mechanism are not allowed to be used for lifting.

3. The flow direction of the medium should be consistent with the arrow direction shown in the valve body.

4. Periodically check the seal.

Once the J41W series stainless steel globe valve is in the open state, there will be no contact between its valve seat and valve disc sealing surface, so its sealing surface is less mechanically worn, because most valve seats and valve discs are easier It is not necessary to remove the entire valve from the pipeline when repairing or replacing the sealing element, which is very suitable for the case where the valve and the pipeline are welded together.