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Library › Tri-clamp & pipe › ASME B16.5 Class 300 pipe flanges, NPS ½ to 24: dimensions, bolt…

Blind flange, NPS 1-1/2 Class 300

Blind flange, NPS 1-1/2 Class 300: OD 155.6 mm, raised face dia 73.0 x 1.6 mm, bolt circle 114.3 mm, 4 holes dia 22.2 mm for 0.75 in bolts; thickness 20.6 mm including the raised face

Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.

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Dimensions

NPS1-1/2
flange OD, in (mm)6.12 (155.6)
thickness incl. raised face, in (mm)0.81 (20.6)
raised-face dia, in (mm)2.88 (73.0)
bolt circle, in (mm)4.50 (114.3)
holes × hole dia, in4 × 0.875
bolt dia, in0.75
hub dia at base, in (mm)2.75 (69.8)
slip-on hub length, in1.13
weld-neck length, in2.63
slip-on bore, in1.95
weld-neck end OD, in1.90
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From the full sheet

ASME B16.5 Class 300 pipe flanges, NPS ½ to 24: dimensions, bolt circle, slip-on and blind: every size, notes, mating features and sources. What are the dimensions of an ASME B16.5 Class 300 flange (OD, thickness, raised face, bolt circle, bolt holes)?

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