| Mechanical Ratings | Standard: 2-in to 8-in, ANSI 600-2500
Consult factory for other options |
| Flange Face And End Connections | Standard: Raised face weldnek and ring-joint weldnek |
| Assembly | Carbon Steel: furnished complete with studs (ASTM A-193 GR B7), nuts (ASTM A-194 GR 2H), (2) 0.0625-in non-asbestos gaskets and (2) jackscrewsStainless Steel: furnished complete with zinc plated studs (ASTM A-193 GR B7), nuts (ASTM A-194 GR 2H), (2) 0.0625-in non-asbestos gaskets and (2) jackscrews |
| Differential Pressure Taps | Location and number of tap holes
Process connection
Types of tap connections
Line bore tolerances
|
| Temperature Range | Standard: -20°F to +250°F (-29°C to +121°C)Standard (low temperature): -100°F to +250°F (-73°C to +121°C)
Consult factory for other options |
| Material Specifications | Standard: A105 Carbon Steel and A350 LF-2 (low temperature applications)Consult factory for other options |
| Flow Measurement Code | API 14.3ISO-5167 |
| Design Code | ASME B16.36 |
| Gaskets | Standard gaskets for RF flanges are 0.625-in thick. (0.125-in thick gaskets are available as an option.)
RTJ Flanges use Daniel model 560 or 590 style plate holders. The plate holder is designed with an equivalent ring gasket to match the R-number based on size and pressure class. |
Orifice flange unions are durable and code-compliant for differential pressure and flow measurement in demanding process applications worldwide. CRT Measurement Services supplies orifice flange unions engineered for accurate differential pressure orifice flange measurement in liquid and gas applications, rapid installation and reliable long-term service.
Our designs meet international flow measurement codes and ship globally with options to match your temperature range, piping class and tapping configuration.
CRT Measurement Services provides orifice flange unions for 2-inch to 8-inch piping and pressure classes ANSI 600–2500. We offer raised face orifice flange and ring-joint weldneck configurations compatible with standard plate styles, including Daniel model 560 and 590 plate holders for RTJ flanges.
The orifice flange unions from CRT Measurement Services are designed to meet strict international standards while remaining flexible for custom requirements. Below is a summary of the key mechanical and design specifications. Each element is engineered for durability, precision, and compatibility across various industrial applications.
Industries that require precise flow measurement and dependable differential pressure monitoring use orifice flange unions. They support critical processes in petrochemical plants, power generation facilities, water treatment systems and industrial manufacturing operations.
Typical applications include custody transfer, flow verification, boiler feed systems and process control loops, where accuracy and repeatability are essential. With a robust design, compliance with API 14.3 and ISO 5167 standards, and suitability for various pressures and temperatures, CRT Measurement Services orifice flange unions deliver reliable performance in demanding global process environments.
Our sales team will guide your selection, and our service technicians will support installation, calibration and on-site commissioning when required. We offer customization for tap location, plate style, line bore tolerance and material selection. For nonstandard sizes, alternative pressure classes or special metallurgy, consult CRT Measurement Services so we can specify and deliver the correct solution.
At CRT Measurement Services, we deliver orifice plates with full technical documentation, traceable material certifications and worldwide shipping. Contact our sales team today to request a quote or discuss custom requirements. Provide your piping size, pressure class, plate style, and process conditions, and we will respond with configuration options, lead times, and pricing. Let’s get started today!
We welcome the opportunity to assist you with any measurement or control requirement. Send us a brief message describing your request and we will respond within 24 hours.
