Orifice bore type |
Concentric square edged orifice Quadrant edged orifice Minimum quadrant edged orifice diameter 4.5 mm Minimum quadrant edged radius 0.5 mm |
Flow calculation standards |
ISO 5167-1 and 2 2003 AGA-3 ASME MFC-3M and 14M JIS Z 8762 BS 1042 |
Flange ratings |
JIS 5, 10, 16, and 20K ANSI (or JPI) 150 and 300 Lb (Note: ANSI and JPI ring dimensions are identical) |
Pressure taps |
Corner taps |
Plate thickness |
3, 6, 9 and 12 mm |
Tab handle |
Welded to orifice plate |
Pressure tab nipples |
Pipe size : 15 mm (½ inch), Sch 40 and 80 Length : 75 and 150 mm Tap connections : ½ PT and ½ NPT male socket welding and butt welding flange connection |
Drain and vent hole |
Per ASME recommendations Not drilled for orifice bores smaller than 25.4 mm |
Markings |
Upstream side of tab handle stamped "Upstream" and with bore type and size, line size, tag number and flange rating. |
Special markings |
Special marking may be furnished to meet special requirements |
Materials |
Ring and pressure tap nipple : 304SS and 316SS Plate : 304SS, 316L SS, Monel and other Tab handle : 304SS and 316L SS |
Gaskets |
Material : Non-Asbestos and Teflon Thickness : 1.5, 2.0 and 3.0 mm |
Manufacturer |
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