Product Description

Daniel® Orifice Flange Unions are a cost-effective and reliable solution for measuring flow in gas and liquid applications. Designed in compliance with ASME B16.36 and API 14.3/ISO 5167 standards, these flange unions ensure high accuracy through precise bore tolerances, proper tap locations, and robust construction. Ideal for both new installations and system upgrades, these flange assemblies simplify the integration of orifice plates into pipeline systems while maintaining measurement integrity.

Key Features

• Standards Compliance: API 14.3 (AGA3), ISO 5167, ASME B16.36

• Forged Steel Body: Standard ASTM A105 carbon steel; optional materials available

• Precise Tap Locations: ±0.016-in for 3" and smaller; ±0.031-in for 4" and larger

• Tap Connections: 0.50-in NPT standard; socket weld optional

• Bore Smoothness & Tolerances: Bore ID meets strict API recommendations

• Gaskets Included: Two 0.063-in non-asbestos gaskets for raised face flanges

• Alignment Pins: Knock-out type dowel pins for 2" to 8" RF flanges

• Jack Screws Included: For safe and easy orifice plate removal

Mechanical & Material Specifications

Available Classes and Configurations

• ANSI 300 / 600 / 900 / 1500 / 2500

• RF and RTJ flanges

• Threaded and socket weld tap types

• Standard bore dimensions per pipe schedule or custom as specified

Applications

• Natural gas transmission

• Oil and gas flow measurement

• Pipeline and process metering

• Custody transfer

• Upstream and downstream facilities.