Valve Face-to-Face Dimensions

Valve Dimensions (Face-to-Face)

Face-to-face, end-to-end and center-to-face dimensions for ASME B16.10 valves: Gate, Globe, Y-Globe, Angle, Check, Ball, Plug, Butterfly and Knife Gate valves.

Valve Type

Nominal Pipe Size

Schematic

Unit: mmBall Valve

Long Pattern · Flanged · Raised FaceTable 1.3-1, col. 20 — AIncludes 1.5 mm (0.06 in.) raised face.

Valve Dimensions

ASME B16.10

DN 15(NPS 1/2)

Class 150 ASME B16.10

Ball Valve·Class 150

End Connections (mm)

3 variants

Long Pattern

Short Pattern

ASME B16.10 Tolerances:

NPS 10 and smaller: ± 1.5 mm (± 0.06 in)
NPS 12 and larger: ± 3.0 mm (± 0.12 in)
Angle valves use one-half of the straightway valve tolerance.

Flanged Ends

ASME B16.5

NPS 1/2 · Class 150

DFlange O.D.88.9 mm

TMin. flange thickness9.6 mm

GRaised face O.D.34.9 mm

t_rfRaised face height2 mm

KBolt circle diameter60.3 mm

nNumber of bolts4

lBolt diameter1/2"

dBolt hole diameter5/8"

LStud bolt length (RF)55 mm

Bolt sizes are in inches as listed in ASME B16.5. Stud length is for the raised-face joint; ring-joint flanges need longer studs.

Buttwelding Ends

ASME B16.25

Wall 3 mm and lesscut square or slightly chamfered

Wall over 3 to 22 mmsingle bevel 37.5° ± 2.5° (Fig. 3.1-1)

Wall over 22 mmcompound: 37.5° ± 2.5° to 19 ± 2 mm, then 10° ± 2.5° (Fig. 3.1-2)

Root face (land)1.6 ± 0.8 mm

End O.D. / borematch the connecting pipe (size, schedule)

ASME B16.25-2022. GTAW root-pass and backing-ring end preparations (Figs. 3.1-1 (b)–(d), 3.2-1 to 3.2-3) must be specified by the purchaser. B16.10 end-to-end (B) is measured between the root faces of the bevels (B16.10 Fig. 2.4-1).

ASME B16.10-2022 · Face-to-Face and End-to-End Dimensions of Valves · Raised Face (1.5 mm for Class 150/300; 6.4 mm for Class 600–2500) included in A · Ring joint end-to-end = A + X (Table 3.3-1) · SI and inch values are each as listed in the standard