ASME B16.36:2006 pdf download.Orifice Flanges.
8.2.2 IdentifIcation. For ring joint flanges requiring alteration of pressure tap location due to interference with the ring groove other than methods provided in this Standard, such alteration shall be identified per agreement between purchaser and manufacturer.
8.3 Pipe Connection
Unless otherwise specified, pressure tap holes may be either tapped !.4 NPT in accordance with ASME Bl.20.1 or 1/2 NIS socket connection in accordance with
ASME B16.l1.
9 JACK SCREW PROVISION
9.1 LocatIon
Each flange shall have a machine bolt mounted in a hole drilled on the flange bolt circle center line at 90 deg from the pressure taps, for use as a jack screw. Machine bolt shall be regular with one heavy hex nut. See Fig. 3.
9.2 Slot for Nut
A slot shall be provided in the flange 2 mm (0.06 in.) wider than the width across flats of the nut. The depth of the slot shall admit the nut so that there is no interference with the joining of the flanges when bolted together without orifice plate.
9.3 Tapped Hole
As an alternative to para. 9.2, a tapped hole may be provided and the hex nut omitted when agreed on between the purchaser and the manufacturer.
10 FLANGE DIMENSIONS
Dimensions are listed in Tables 1, 2, 3, 4, and 5, for metric, and Tables I-I, 1-2, 1-3, 1-4, and 1-5, and Mandatory Appendix II for US. Customary
11 FLANGE THREADS
Threaded flanges shall have an American National Standard taper pipe thread conforming to ASME B1.20.1.
8.3 Pipe Connection
Unless otherwise specified, pressure tap holes may be either tapped !.4 NPT in accordance with ASME Bl.20.1 or 1/2 NIS socket connection in accordance with
ASME B16.l1.
9 JACK SCREW PROVISION
9.1 LocatIon
Each flange shall have a machine bolt mounted in a hole drilled on the flange bolt circle center line at 90 deg from the pressure taps, for use as a jack screw. Machine bolt shall be regular with one heavy hex nut. See Fig. 3.
9.2 Slot for Nut
A slot shall be provided in the flange 2 mm (0.06 in.) wider than the width across flats of the nut. The depth of the slot shall admit the nut so that there is no interference with the joining of the flanges when bolted together without orifice plate.
9.3 Tapped Hole
As an alternative to para. 9.2, a tapped hole may be provided and the hex nut omitted when agreed on between the purchaser and the manufacturer.
10 FLANGE DIMENSIONS
Dimensions are listed in Tables 1, 2, 3, 4, and 5, for metric, and Tables I-I, 1-2, 1-3, 1-4, and 1-5, and Mandatory Appendix II for US. Customary
11 FLANGE THREADS
Threaded flanges shall have an American National Standard taper pipe thread conforming to ASME B1.20.1.
