JIS 20K Japanese standard flange globe valve

What is JIS 20K flange globe valve?

JIS 20K flange globe valve is a type of flange connected globe valve designed and selected using the Japanese standard pressure rating system, mainly used for industrial pipeline opening and closing. 20K represents the corresponding pressure level, but the specific allowable working pressure still needs to be confirmed based on the material, temperature, and applicable product standards.

How to confirm the valve stem structure?

Japanese standard globe valves can have different stem and cover structures. Page titles or industry jargon cannot replace product structure diagrams, therefore OS&Y, lifting valve stems or other configurations should be confirmed according to specific models and drawings.

How to choose SCPH2, SCS13, and SCS14?

These materials belong to different cast steel or stainless steel material systems. The selection of materials should be based on the corrosiveness of the medium, temperature, working pressure, and project material specifications, and cannot be determined solely based on the 20K pressure rating.

Why do flange standards need to be checked separately?

Even for the JIS system, specific flange dimensions, sealing surfaces, bolt holes, and matching pipeline requirements should be confirmed. Flanges of other standard systems cannot be directly replaced without checking their size and pressure.

How to choose JIS20K globe valve?

Suggest providing information on the medium, temperature, design and working pressure, nominal size, valve body and trim materials, flange requirements, sealing requirements, valve stem structure, and operating method. The current unconfirmed model and size parameters on the page should be based on the final data sheet.

JIS20K flange globe valve common problems

Does JIS20K represent the ability to withstand the same pressure at any temperature?

No. The actual pressure temperature rating is affected by material and product design and needs to be confirmed based on corresponding standards and product data.

Is the JIS20K globe valve necessarily a OS&Y rising stem structure?

The valve stem structure cannot be judged solely based on the pressure rating of 20K. It should be confirmed according to the specific model, structural diagram, and product information.

What are the main parameters required to choose JIS20K globe valve?

Information such as medium, temperature, working pressure, diameter, flange standard, valve body and trim materials, sealing and operating methods are required.