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ASME B16.36-2006 pdf free

ASME B16.36-2006 pdf free.Orifice Flanges.
Flanges shall be marked as required in ASME 816.5. For welding neck flanges crnly, the bore diameter shall be marked.
The finish of contact faces shall conform to the requirements of ASME B16.5.
7.1 Gasket Thickness
flange dimensions are based on the use of 1.5 mm (0.06 in.) thick gaskets.
7.2 Flange Gaskets Requiring Dimensional Changes
When the location of the pressure tap with respect to the orifice plate is critical to the service and metering conditions, its location may be altered to accommodate other than 1.5 mm (0.06 in.) thick gaskets or ring type joint gaskets whose thickness may vary from that listed in in Tables 2, 3, 4, and 5 or those listed in Tables 1-2, 1-3, 1-4, and 1-5 or Mandatory Appendix 11.
The alteration of location may also be accomplished by the removal of 2 mm (0.06 in.) from the raised face of the flange. If an original 2 mm (0.06 in.) high raised face is removed, the user is cautioned to limit the outside diameter of the gasket or orifice plate to the tabulated R dimension.
8.1 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 of the flange. Corner taps may be used on NPS 114 and smaller if space permits. See Fig. 1.
For ring joint flanges listed in Tables 2 through 5, Tables 1-1 through 1-5, and Mandatory Appendix 11 where radial taps will interfere with the ring groove, angular meter taps, as illustrated in Fig. 2, will be required. Each pressure tap hole shall be equipped with a pipe plug.
8.2 Location
8.2.1 Measurement. The24 mm (0.94 in.)dimension for raised face and 19 mm (0.75 in.) for ring joint shall be measured at the bore.
8.2.2 Identification. For ring joint flanges requiring alteration of pressurc 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 NVF in accordance with ASME B1.20.1 or 2 NPS socket connection in accordance with
ASME 1316.11.
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.
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 U.S. Customary.ASME B16.36 pdf free download.

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