Abstract： ASME B16.36:2020 pdf download.Orifice Flanges. Changing the distance from the bce or the flange to the tap centerline may also be accomplished by changing the raised face height. If flat gaskets are being used and the raised face is complet...

ASME B16.36:2020 pdf download.Orifice Flanges.

Changing the distance from the bce or the flange to the tap centerline may also be accomplished by changing the raised face height. If flat gaskets are being used and the raised face is completely removed, the user Is cautioned to limit the outside diameter of

the gasket or orifice plate to the outside diameter of raised face, R, in order to ensure proper gasket compression.

9 PRESSURE TAPS

9.1 General

Each orifice flange shall be provided with two pressure tap holes extending radially from the outside diameter of the flange to the inside diameter oIthe flange, Corner taps may be used on NPS 1’, and smaller if space permits. See Figure 9.1-1.

For ring joint flanges listed In Tables 5-2 through 5-5. and Mandatory Appendis I. where radial taps will interfere with the ring

groove, angular meter taps, as Illustrated in Figure 9.1-2, will be required.

9.2 LocatIon

9.2.1 Measurement. The distance between the centerline of the tap and the face of the flange shall he measured at the bore.

Dimensions different than those shown in the tables may be supplied by agreement between the purchaser and manufacturer.

9.2.2 IdentifIcation. When methods other than those described in this Standard are used for ring olnt flanges requiring changes to the pressure tap location due to interference with the ring groove, such changes shall he identified as agreed by purchaser and

manufacturer.

9.3 Pipe Connection

Unless otherwise specified by the purchaser, orifice flanges shall be supplied with NPS threaded connections.

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