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ORIFICE FLANGE ASSEMBLES

DESCRIPTION
Orifice Flange Assemblies are used in conjunction with Orifice for flow measurement of smaller or medium size pipes at lower or medium pressure ranges.
The flange connection is of an RF type and the differential pressure tapping system is with flange taps.

SPECIFICATIONS

Orifice Flanges types :
   Slip-on
   welding neck
   ring-joint welding
   neck

Nominal diameters :
   25mm(1 inch) to 500mm(20 inches)

Flange rating :
   JIS 10, 20, 30Kg/cm²RF
   ANSI(or JPI) 150, 300, 600, 900,
   1500, 2500LB(RF, RTJ)

Flange material :
   carbon steel
   ASTM A182F304, 316, etc.
   Duplex 2205, AL-6XN, 904L
   Hastelloy C-276, 22. Monel 400, K-500.
   Inconel 600/601, 625, 718. Incoloy 800/800H/800HT, 825

Materials of bolts and nuts :
   STUD BOLT : A193-B7, B8, B8M, etc.
   Nuts : A194-2H, 8, 8M, etc.
   Jack bolts and nuts : A193-B7, B8, B8M, etc.

Gaskets :
   Sheet Gasket : 1.5mm
   Spiral Wounded Gasket : 4.5mm

Piping connection method :
   JIS 10Kg/cm² : Insertion welding type (slip-on type)
   JIS 20,30Kg/cm², ANSI and JPI : Butt welding type (welded neck)

Flange Ratings and Facings

Mounting

Standard

 

Slip-on

JIS

10 and 16kg/cm²(RF), 20kg/cm²(RF)

ANSI

Class 150 and 300 (RF)

Welding neck

JIS

10 and 16kg/cm²(RF), 20kg/cm²(RF)

ANSI

Class 150 and 300 (RF)

Welding neck

ANSI

Class 300, 600, 900 and 1500 ring-joint (RJ)

Slip-on

JIS

5, 10 and 16kg/cm²(RF), 20kg/cm²(RF)

ANSI

Class 150 and 300 (RF)

Welding neck

JIS

10, 16, 20, 30, 40 and 63kg/cm²(RF)

ANSI

Class 150, 300, 600, 900,1500 and 2500 LB (RF,RTJ)

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