How to Specify a Titanium Orifice Flange

An orifice flange assembly is part of a differential-pressure measurement system. The flange pair, tapping arrangement, orifice plate, bore, gasket, bolting and piping design must be specified together.

RFQ Checklist

• ASME B16.36 or approved drawing and revision
• Weld neck, slip-on or threaded type where covered
• NPS, class, facing, bore and pipe schedule
• Pressure tap orientation, size and thread
• Orifice plate material, thickness, bore and edge
• Jack screws, gaskets, bolts and accessories
• Titanium grade, material standard, service and NDE

Confirm Standard Coverage

ASME B16.36 has defined coverage by flange type and class. Do not assume every type, class or custom tapping arrangement is included. Out-of-scope configurations need an approved design basis.

Measurement System Review

Beta ratio, straight-run requirements, pressure-tap locations and instrument design are engineering responsibilities outside material supply alone.

Product page: Titanium Orifice Flange.

Related Reading

Special Flange Selection · Long vs Standard Weld Neck · Reducing Flange RFQ Guide