20SOB, 20K Ductile Iron Swing Check Valve

[Features]
· The ductile cast iron product (FCD-S) is a cast iron product that passes JIS B8270 Appendix 5-A and the standard specified by METI Public Notice No. 16 1975.8.1 (Revision, March 24, 1997 Notice No. 137) Article 4-7, Note 1, and its material is regulated specially for high pressure gas facilities, pressure containers, etc. which are different from cast iron products regulated by JISG5502 Standard for Ductile Iron (FCD400-15, etc.).
· Cast with the following chemical composition, mechanical properties and micro structure as defined in the official notice of JIS and METI for ductile iron castings (FCD-S), making it suitable for use in high pressure gas equipment or pressure vessels.