¡ß Orifice plate with a holding ring ¡ß
¡Ü Model : F300 series
¡Ü Description :
A holding ring assembly is a combination of a holder ring and an orifice plate designed for Ring type joint(RTJ) flanges of ANSI or JPI specifications. The holding ring has a function of holding the orifice plate and also a function as a gasket to prevent leakage of the process fluid. This metallic sealing system is applicable to a fluid of high temperature and high pressure, the pressure tapping system is normally the flange tap type.
¡Ü Orifice bore type :
- Concentric Square Edged Orifice
- Quadrant Edged Orifice
¡Ü Flow calculation standards :
- ISO 5167-1 and 2 2003
- AGA-3
- ASME MFC-3M and 14M
- JIS Z 8762
- BS 1042
¡Ü Flange ratings :
- ANSI class 300, 600, 900 and 1,500 Lb
- Ring type joint (RTJ)
¡Ü Pressure taps : Flange taps
¡Ü Plate thicknesses : 3, 6, 9 and 12 mm
¡Ü Tab handle : Welded to ring
¡Ü Holding ring :
- Riveted to plate
- Types : Octagonal or oval
¡Ü Drain and vent hole :
- Per ASME recommendations
- Not drilled for orifice bores smaller than 25.4mm
¡Ü Markings :
Upstream side of tab handle stamped with "Upstream" and with bore type and size, line size, tag number and flange rating
¡Ü Special markings :
- Special marking may be furnished to meet
- Specific requirement
¡Ü Materials :
- Plate : 304SS and 316L SS
- Holding ring : Soft lron, 304SS and 316SS
- Rivets : 304SS and 316SS
- Tab Handle : 304SS and 316SS
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