RTJ FLANGE- Ring Type Joint
The RTJ flange (Ring Type Joint) is designed for high-pressure and/or high-temperature pipeline applications. This makes them the required standard in API specification flanges.
Applications include oil field valves, pipework assemblies, and high integrity pressure vessel joints.
Like other flanges, they use a gasket under compression to create a secure joint. But an RTJ flange differs from the more common flat and raised face flange in several ways:
The gasket used is a steel ring - instead of the flat composite material type.
An RTJ flange has a groove machined into the flange surface to accept the gasket.
When the gasket deforms it creates a metal-to-metal seal.
Under compression, the softer metal of the gasket flows into the microfine structure of the harder flange material.
The raised faces of connected and tightened RTJ flanges may be in contact with each other. When this happens, the compressed gasket will not bear any extra load. The benefit is the integrity of the joint will be protected from over-tightening, vibration, and movement.
RTJ Flange Materials: Stainless Steel, Duplex & Super Duplex Steel, Carbon Steel, Low-Temperature Carbon Steel, Alloy Steel, Copper Alloy, Nickel Alloy
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Description: This Video is the second step to get familiar with a Welding Procedure Specification. How It looks, What are the basic components of WPS? Essential Non Essential variables, From where to pick the data? Comparison of the International Qualifying Standards in relation with the WPS Variables. ASME B 31.3, ASME B31.4, ASME B31.8, API 1104 Comparison of the WPS requirements. Discussion of all modules of a WPS taking a sample example.
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