2020年10月15日 · Cast iron gate valves designed in accordance with MSS SP 70 shall be furnished with ASTM A126 Grade B gray iron bodies and bonnets. Two classes are available: Class 125 and Class 250. We supply Class 125 in both rising stem and non-rising stem styles; Class 250 is only available in rising-stem style.

2012年9月10日 · mss sp-70-2006 中文版 法兰端和螺纹端灰铸铁闸阀-阀门标准规范电子版下载 星级： 15 页 mss sp-85-2002 法兰端和螺纹端灰铸铁截止阀和角阀 星级： 12 页 美国阀门及配件工业制造商协会标准mss sp-70-2006 中文版 法兰端和螺纹端灰铸铁闸阀标准规范电子版下载 ...

Each valve is shell and seat pressure tested per industry standard MSS SP-70. Gland is two piece gland / gland flange design for optimal alignment and uniform packing compression. Renewable seat rings. Body has 5 tapping bosses. Solid wedge design. Class 125 have flat faced end flanges, class 250 has raised face end flanges.

2011年1月1日 · This Standard covers Classes 25, 125, and 250 Gray Iron Pipe Flanges and Flanged Fittings. It includes (a) pressure–temperature ratings (b) sizes and method of designating openings of reducing...

MSS SP-81-2018 无阀盖的法兰端不锈钢刀形闸阀().pdf; MSS SP-6-2018 中文版 管法兰及阀门和端法兰的接触面标准精度.pdf; 法兰标准-MSS SP-65-1994 中文版 用透镜垫的高压法兰和螺纹短管.pdf; MSS SP-72-2010 法兰端或对焊端通用球阀; MSS SP-70-1998 法兰端和螺纹端铸铁闸阀; MSS SP-118-2007 法兰端,无法兰端,螺纹端和焊接端 ...

MSS SP-70-2011 Gray Iron Gate Valves, Flanged and Threaded Ends Standard Practice Developed and Approved by the Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. 127 Park Street, NE Vienna, Virginia 22180-4602 Phone: (703) 281-6613 Fax: (703) 281-6671 E-mail: [email protected] MSS® www.mss-hq.org

This 2011 edition of MSS SP-70, in addition to various editorial and formatting updates, includes changes to: (1) revise Section 4.1.4 by adding “gray iron” as an acceptable handwheel material; (2) clarify the leakage rate in Section 7.4; and (3) update the organizations and references in Annex C. This is a preview of "MSS SP-70-2011".

This 2011 edition of MSS SP-70, in addition to various editorial and formatting updates, includes changes to: (1) revise Section 4.1.4 by adding “gray iron” as an acceptable handwheel material; (2) clarify the leakage rate in Section 7.4; and (3) update the organizations and references in …

2011年12月20日 · MSS SP-70-2011 ensures gray iron gate valves with flanged or threaded ends meet dimensional and material standards for general service applications. It reduces failure risks, enhances durability, and maintains pressure-temperature performance.

2018年12月25日 · 1998版的 mss sp-70除了在编辑上的做了一些更改外,还做了以下更改:使参考用 的米制单位更加完整,刑去了800磅级阅门的温度ー压力额定值,并将所参照的1SO标