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  • All dimensions are in inches.
  • These flanges will be supplied with a 1/16" raised face unless otherwise specified.
  • Flat face option available.
  • Dimensions are supportive from industry terminology and are a non-committee specification.
  • These flanges are not covered by ASME B16.47 or MSS-SP44 specifications.

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Industry Standard Slip-On Flange
Unit of Measure
Items Industry Standard Slip-On Flange
26150SOSA
Industry Standard Class 150 Series A Slip-On Bolting Matches
Industry Standard Slip-On Flange
28150SOSA
Industry Standard Class 150 Series A Slip-On Bolting Matches
Industry Standard Slip-On Flange
30150SOSA
Industry Standard Class 150 Series A Slip-On Bolting Matches
Industry Standard Slip-On Flange
32150SOSA
Industry Standard Class 150 Series A Slip-On Bolting Matches
Industry Standard Slip-On Flange
34150SOSA
Industry Standard Class 150 Series A Slip-On Bolting Matches
Flange Type N/A Slip-On
Nominal Pipe Size N/A 26 N/A 28 N/A 30 N/A 32 N/A 34
Outside Diameter (O) N/A 34.25 in N/A 36.50 in N/A 38.75 in N/A 41.75 in N/A 43.75 in
Thickness (T) N/A 2.69 in N/A 3.06 in N/A 3.31 in N/A 3.41 in N/A 3.68 in
Raised Face Diameter (R) N/A 29.50 in N/A 31.50 in N/A 33.75 in N/A 36.00 in N/A 38.00 in
Length Thru Hub (Y) N/A 3.69 in N/A 3.81 in N/A 3.94 in N/A 4.18 in N/A 4.25 in
Hub Diameter (X) N/A 28.25 in N/A 30.50 in N/A 32.50 in N/A 34.50 in N/A 36.50 in
Minimum Fillet Radius (r) N/A 0.38 in N/A 0.44 in N/A 0.44 in N/A 0.44 in N/A 0.50 in
Flange Bore (B) N/A 26.25 in N/A 28.25 in N/A 30.25 in N/A 32.25 in N/A 34.25 in
Approximate Weight N/A 289 lb N/A 352 lb N/A 416 lb N/A 506 lb N/A 561 lb
Bolt Circle (C) N/A 31.75 in N/A 34.00 in N/A 36.00 in N/A 38.50 in N/A 40.50 in
Number of Holes N/A 24 N/A 28 N/A 28 N/A 28 N/A 32
Diameter of Holes N/A 1.38 in N/A 1.38 in N/A 1.38 in N/A 1.62 in N/A 1.62 in