JIS 20K Japanese standard flange gate valve SCS13 SCS14 SCPH2

JIS 20K Japanese standard flange gate valve

This product is a flange gate valve with pressure rating of JIS 20K, model Z41W-20K, using OS&Y rising stem structure and handwheel operation. The current parameter table includes material options for SCS13, SCS14, and SCPH2.

20K cannot understand pressure solely based on numbers

JIS 20K belongs to the pressure rating representation in the Japanese standard system. The actual pressure and temperature ratings should be confirmed based on the material, temperature, and the JIS standard used, and cannot be simply equated with PN or Class numbers.

How to choose materials?

SCS13, SCS14, and SCPH2 correspond to different material configurations, and should be selected based on the corrosiveness of the medium, design temperature, pressure, and project material requirements. When there is no specific working condition basis, it should not be uniformly declared as suitable for all acid, steam, or corrosive media.

flange connection

When selecting, in addition to the caliber and pressure rating, it is also necessary to confirm the corresponding JIS flange size, sealing surface, and matching pipeline standards to avoid direct mixing with other standard system flanges.

JIS10K product can be referred toJIS10K rising stem OS&Y flange gate valveFor more products, please refer toGate valve manufacturer column。

Frequently Asked Questions

What is the main difference between JIS20K and JIS10K?

The two belong to different pressure levels, and the flange size, pressure temperature rating, and applicable conditions need to be confirmed according to specific JIS standards and materials.

Can SCS13 and SCS14 be interchanged freely?

Not recommended. It should be determined based on the medium, corrosiveness, temperature, and project material requirements.

Can JIS20K be directly connected to PN flange?

It is not enough to judge based solely on the nominal diameter. It is necessary to verify the size requirements of the flange outer diameter, hole spacing, bolt holes, and sealing surface.