ASME B16.36 | Orifice Flanges | Flow Measurement Flanges | Class 300–2500
Elite Orifice Flanges are precision-manufactured flange assemblies designed for differential-pressure flow measurement using an orifice plate. Each assembly incorporates pressure-tap connections for upstream and downstream pressure measurement, together with jack-screw provisions for safe installation and removal of the orifice plate.
Elite supplies Orifice Flanges for oil & gas, refining, petrochemical, chemical processing, power generation, natural gas and process instrumentation applications.
| Parameter | Elite Specification |
|---|---|
| Manufacturer | Elite |
| Product Type | Orifice Flange / Orifice Flange Pair |
| Primary Standard | ASME B16.36 |
| Nominal Size | NPS 1/2–24, as applicable |
| Pressure Classes | Class 300, 400, 600, 900, 1500, 2500 |
| Flange Type | Welding Neck; Slip-On and Threaded Class 300 |
| Facing | RF / RTJ, where applicable |
| Pressure Taps | Two radial pressure-tap connections |
| Tap Connection | Threaded or socket connection, as specified |
| Jack Screws | Provided for flange separation |
| Bore | Matched to pipe ID / metering requirements |
| Construction | Forged and machined |
| Inspection | Visual, dimensional, material and NDE as specified |
| Documentation | MTC, EN 10204 3.1/3.2, COC and inspection reports |
Carbon Steel
ASTM A105/A105N, ASTM A181, ASTM A350 LF2/LF3 and ASTM A694 F42, F46, F52, F60 and F65.
Stainless Steel
ASTM A182 F304/F304L, F316/F316L, F321/F321H, F347/F347H, F310/F310S, F317 and F904L.
Duplex & Super Duplex
ASTM A182 F51, F53 and F55.
Alloy Steel
ASTM A182 F1, F5, F9, F11, F12, F22, F91 and F92.
Nickel Alloys
Nickel 200/201, Monel 400/K500, Inconel 600/601/625/800/825, Hastelloy C276 and Alloy 20.
Copper-Nickel Alloys
UNS C70600 and C71500, including 90/10 and 70/30 Cu-Ni alloys.
Material selection is based on pressure, temperature, process fluid, corrosion conditions, mechanical requirements and applicable project specifications.
Elite manufactures Orifice Flanges through controlled forging, heat treatment and precision machining processes. Critical dimensions including flange OD, bore, facing, bolt-hole pattern and pressure-tap location are controlled to meet applicable standards and project requirements.
Elite can provide:
Elite can manufacture Orifice Flanges according to customer drawings, datasheets and project specifications, including custom bore dimensions, pressure-tap sizes, tap orientation, materials, NDE requirements, sour-service requirements, special marking and complete metering flange assemblies.
Elite Orifice Flanges are used in:
For quotation, please provide:
Size + Class + Flange Type + Facing + Material + Bore + Pressure Tap Connection + Orifice Plate Requirement + Inspection + Quantity
Example:
6″ Class 600 Elite Welding Neck Orifice Flange Pair, RF, ASTM A105N, 1/2″ NPT pressure taps, matched bore, jack screws, EN 10204 3.1, PMI.
