Products

Orifice Flanges are widely used in conjunction with orifice meters for measuring the rate of flow of liquids and gases. They are basically the same as standard welding neck and slip-on flanges except for the provision of radial, tapped holes in the flange ring for meter connections and additional bolts to act as jack screws to facilitate separating the flanges for inspection or replacement of the orifice plate. In choosing the type of orifice flange, the considerations affecting the choice of welding neck and slip-on standard flanges apply with equal force.

Dimensions

300# RFS0 ORIFICE FLANGE UNION

MATERIALS: A105 (C.S.) AND A182 (S.S.)

Other materials and schedules available

HARDWARE:

• Stud Bolts:A193 Gr. B7 Steel
• Hex Nuts:A194 Gr. 2H Steel
• Jackscrew:C1018 Hardened Square Head Screws
• Pipe Plugs:Hex Head, Forged Steel
• Ring Gaskets:C4430 Non-Asbestos

Manufactured to meet
A.G.A Report #3-2
A.P.I 14.3
ASME SPECIFICATIONS
Orifice Plates sold seperate

600# RFS0 ORIFICE FLANGE UNION

MATERIALS:
Domestic A105 (C.S.) AND A182 (S.S.)
Other materials and schedules available

HARDWARE:

Stud Bolts:A193 Gr. B7 Steel
Hex Nuts:A194 Gr. 2H Steel
Jackscrew:C1018 Hardened Square Head Screws
Pipe Plugs:Hex Head, Forged Steel
Ring Gaskets: C4430 Non-Asbestos

Manufactured to meet
A.G.A Report #3
A.P.I 14.3
ASME SPECIFICATIONS
Orifice Plates sold seperate

Uses of orifice flanges: 

• Orifice flange is used to flow/rate metering of piping systems.
• They are used for all intensive purposes, similar to weld neck and slip-on flanges with extra machining.

Orifice Flange - SLIP - ON (OS)

CLASS 600# ANSI B16.36 • Orifice Flanges
Weld Neck Dimensional Data

CLASS 900# ANSI B16.36 • Orifice Flanges
Weld Neck Dimensional Data

CLASS 1500# ANSI B16.36 • Orifice Flanges
Weld Neck Dimensional Data

CLASS 2500# ANSI B16.36 • Orifice Flanges
Weld Neck Dimensional Data