Applicable standards:
Design and manufacture, BS1873, ASME/ANSI B16.34
Face To Face, ASME/ANSI B16.10
Flange End Connection, ASME/ANSI B16.5
Welded End Connection, ASME/ANSI B16.25
Inspection and test, API598

Design description:
Straight type body design
OS&Y, outside screw and yoke
BB, bolted bonnet
Rising stem and handwheel
Plug disc
ANSI CLASS 150~900
Size 2"~24"
Main part materials list

Part Name
10
Packing
Graphite
16
Stem Nut
Brass or D2
17
Handwheel
Malleable Iron