Description

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.

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 and 900 Lb RF
Flange material	A105, A182-F304, A182-F316, A182-F11, A182-F22 and A350-LF2
Materials of bolts and nuts	Stud blots : SNB7, A193-B7 and A194-B8 Nuts : S45C, A194-2H and A194-8 Jack bolts and nuts : S25C and A307
Gasket	Thickness : 4.5 mm Material : Spiral wound gaskets
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
Tab handle	Welded to orifice plate
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
Manufacturer

Datasheet:

All features and specifications subject to change without notice, delivery subject to availability, correction of errors and omissions excepted.