Raised Face (RF) The Raised Face flange is the most common type used in process plant applications, and is easily to identify. It is referred to as a raised face because the gasket surfaces are raised above the bolting circle face.

Learn about types of flange faces: Flat Face (FF), Raised Face (RF), Ring Joint (RTJ), Tongue and Groove (T&G), and Male and Female types.

A raised face (RF) flange has circular shaped sealing face that protrudes from the flange’s bolting circle plane. Raised face flanges are available in all pressure classes, and thus for a wide range of pressure and temperature ratings. RF flanges are the most common type of flange employed in the Oil and Gas and chemical engineering ...

The main difference between RF and RTJ flanges and other flange face lies in their sealing mechanism, appearance, installation, requirement of maintenance and more. RF flanges typically used in systems with low or medium pressure and temperature areas.

Raised face (RF) flanges are common in process plant applications but can be used in almost all applications. They are suitable for use in high and low temperatures and pressures. The purpose of the RF flange is to focus more pressure on the smaller gasket area, which increases the pressure containment capabilities of the joint.

Raised Face (RF): The most common type, featuring a raised surface area around the bore that contacts the gasket. This design concentrates the bolt load over a smaller area, enhancing the seal’s effectiveness. Raised face flanges are used in a …

Jan 2, 2025 · Raised Face (RF) flanges and Ring-Type Joint (RTJ) flanges differ primarily in design, sealing mechanism, and application suitability. RF flanges use a raised surface for gasket placement, making them ideal for medium to low-pressure environments and offering ease of installation and maintenance.

The raised face (RF) is the most common type of flange facing used. It is called a raised face flange because it has a raised surface above the bolting circle where the gasket is placed. These flanges are widely used in oil and gas pipelines.

2 days ago · Flange face types. Raised Face (RF): The most common type in the industry, characterized by a small raised section above the bolt circle, which allows the use of various packings and concentrates pressure in order to improve containment. The face height varies according to the pressure class, being 1/16“ for classes 150 and 300, and ¼” for ...

Perhaps the most common type of flange facing is the raised face flange, abbreviated as RF. It is used in almost all applications in high and low pressures and temperatures . The face of the flange is either 1/16” or 1/4” depending on the pressure class.