MSS SP 42 2013 Edition, January 1, 2013
Corrosion-Resistant Gate, Globe, Angle, and Check Valves with Flanged and Butt Weld Ends (Classes 150, 300, & 600)
This Standard Practice covers Classes 150, 300, and 600 corrosion-resistant alloy gate, globe, angle, and check valves with flanged and butt weld ends which are constructed of pressure-containing parts, including materials that conform to ASME B16.34.
This Standard Practice covers additional construction requirements for corrosion-resistant valves not covered by ASME B16.34. Such valves are made from alloys whose properties are uniquely suited to the service into which they are placed. Chemical process and cryogenic fluid service constitute two such applications.
Valve Types and Sizes
Types The following valve types are covered herein and are illustrated in Figures A1 through A8 in Annex A(1).
a) Gates, outside screw and yoke design (OS&Y)
b) Globes, T, and Y-pattern, outside screw and yoke (OS&Y)
c) Angle, outside screw and yoke (OS&Y)
d) Checks, lift, swing and Y-pattern
Nominal Pipe Sizes Gate, Globe, Angle, and Check Valve sizes covered by this Standard Practice are as follows:
1/2 < NPS < 24 (15 < DN < 600)