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Unit of Measure

Specifications

Nominal Pipe Size

1 1/4 inches

Outside Diameter - D

4.62 inches

Thickness - t

0.62 inches

O.D. of Raised Face - G

2.50 inches

Diameter at Base of Hub - X

2.31 inches

Bore - B1

1.38 inches

Length Thru Hub - T1

2.25 inches

Diameter of Hub at Bevel - A

1.66 inches

Bolt Circle Diameter

3.50 inches

Number of Holes

4

Diameter of Holes

0.62 inches

Diameter of Bolts

1/2 inches

Machine Bolt Length (Raised Face)

2.25 inches

Stud Bolt Length (Raised Face)

2.75 inches

Stud Bolt Length (Ring Joint)

3.25 inches

Approx. Weight

1.40 kg

Approx. Weight

3.10 lbs

Features

N/A

  • Class 150 flanges except Lap Joint will be furnished with 0.06" raised face, which is included in 'Thickness' (t) and 'Length through Hub' (T1), (T2).
  • For Slip-on, Threaded, Socket Welding and Lap Joint Flanges, the hubs can be shaped either vertical from base to top or tapered within the limits of 7 degrees
  • Blind Flanges may be made with the same hub as that used for Slip-On Flanges or without hub.
  • The gasket surface and backside (bearing surface for bolting) are made parallel within 1 degree. To accomplish parallelism, spot facing is carried out according to MSS SP-9, without reducing thickness (t).
  • Depth of Socket (Y) is covered by ANSI B16.5 only in sizes through 3 inch, over 3" is at the manufacturer's option.