Applicable standards and specifications
Design and manufacturing: API602/BS5352/MSS SP-118
Face to face: manufacturer standard (welded ends)
Face to face: ASME B16.10 (flanged ends)
End flanges: ASME B16.5
Butt welding ends: ASME B16.25
Socket welding ends: ASME B16.11
Screwed ends: ASME B1.20.1
Inspection and test: API 598
Materials: A105, A182 F304, F304L, F316, F316L, F11, F22, F51
Design descriptions
Outside screw and yoke (OS&Y)
BB, bolted bonnet
Choice of WB, welding bonnet
Loose disc, choice of plug or ball
Seat ring integral with body
Yoke integral with bonnet
Rising stem and hand wheel
Horizontal service
SW, socket welding ends
SC, screwed ends
BW, butt welding ends
Flanged ends