F500_Orifice flange assembly
F500
Information
Orifice flange assembly is used in conjunction with orifice plate for flow measurement of smaller or medium size pipes at lower or medium pressure ranges. The flange connection is a RF type and the differential pressure tapping system is the flange taps.
Specification
| Flange mounting type | Welding neck Slip-on Socket-weld Ring-joint welding neck |
| Nominal diameter | 25 ~ 600 mm 1″ ~ 24″ |
| Flange ratings | JIS 10, 20, 30, 40 and 63 K ANSI (or JPI) 150, 300, 600, 900, 1500 and 2500Lb |
| Flange material | A105, A182-F304, A182-F316, A182-F11, A182-F22 and A350-LF2 and Other |
| Materials of bolts and nuts | Stud blots : SNB7, A193-B7 and A194-B8 and Other Nuts : S45C, A194-2H, A194-8 and OtherJack bolts and nuts : S25C and A307 |
| Gasket | Thickness : 4.5 mm or other Material : Spiral wound gaskets or other |
| Piping connection method | ANSI 150 Lb : Insertion welding type (Slip-on type) ANSI 300, 600 Lb : Butt welding type (Welding neck) ANSI 900 Lb : Butt welding neck (Ring-joint WN) |
| Differential pressure piping connection | Select referring to the model number construction table |
| Orifice bore type | Concentric square edged orifice Quadrant edged orifice Eccentric orifice Segmental orifice |
| Flow claculation standards | ISO 5167-1 and 2 2003 AGA-3 ASME MFC-3M (R.W Miller) L.K. Spink JIS Z 8762 |
| Plate thickness | 3,6,9 and 12 mm and Over |
| Plate material | Standard : 304SS and 316L SS Non-standard : Monel, Hastelloy B/C, Titanium etc. |
| 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 requirement |
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