DESCRIPTION
Orifice Flange Assemblies are 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 an RF type and the differential Pressure tapping system is the flange taps.
SPECIFICATION
ORIFICE BORE TYPE
Welding neck
Slip-on
Socket-Weld
Ring-joint welding neck
NOMINAL DIAMETERS
25mm(1 inch) to 500mm(20 inches)
FLANGE RATINGS
JIS 10, 20, 30kg/cm RF
ANSI (or JPI) 150, 300, 600 lb rf
FLANGE MATERIAL
A105, A182-F304, A182-F316, A182-F11, A182-F22, A350-LF2
MATERIALS OF BOLTS AND NUTS
Stub bolts: SNB7, A193-87, A194-B8
Nuts: S45C, A194-2, A194-8
Jack bolts and nuts: S25C, A307
GASKET
Thickness: 1.5mm, 4.5mm
Material: Asbestos sheet gaskets, spiral wound gaskets
PIPING CONNECTION METHOD
ANSI 150# : Insertion welding type(Slip-on-type)
ANSI 300#, 600# : Butt welding type(Welding neck)
ANSI 600# : Butt welding neck(Ring-joint WN)
DIFFERENTIAL PRESSURE PIPING CONNECTION
Select referring to the model number construction table
