Class 150 F304/L Stainless Steel Threaded, Raised-Face Flange
Class 150 F304/L Stainless Steel Threaded Raised-Face Flange
The Class 150 F304/L Stainless Steel Threaded Raised-Face Flange manufactured to ASME A/SA182 and ASME B16.5 requirements provides a durable, corrosion-resistant connection for industrial piping systems where a threaded flange connection is preferred. Its forged stainless steel construction combines excellent corrosion resistance with the convenience of installing the flange without welding the pipe directly to the flange.
ASME A/SA182 F304/L Stainless Steel
ASTM A182 / ASME SA-182 F304/F304L stainless steel offers excellent general corrosion resistance, mechanical strength, durability, and fabrication characteristics. F304L has a lower carbon content than F304, helping reduce carbide precipitation when the material is exposed to welding temperatures during associated fabrication.
These stainless steel flanges are suitable for many chemical processing, food and beverage, pharmaceutical, water treatment, manufacturing, utilities, and general industrial piping applications.
Class 150 Threaded Flange Design
A threaded flange contains internal pipe threads that connect to compatible externally threaded pipe. Because the pipe-to-flange connection does not require welding, threaded flanges can provide a practical installation option where welding is undesirable or impractical.
Thread type, pipe size, service conditions, and applicable piping-code requirements should always be confirmed before installation.
The Class 150 designation represents an ASME pressure class rather than a maximum working pressure of exactly 150 PSI. Allowable pressure varies with material, size, temperature, and applicable pressure-temperature ratings.
Raised-Face Flange Construction
The raised-face (RF) design features an elevated gasket seating area that concentrates bolting force over the gasket to help establish a dependable seal.
Manufactured to ASME B16.5, these flanges follow applicable requirements for dimensions, facing, bolt-hole patterns, tolerances, and pressure-temperature ratings.
Selecting an F304/L Threaded Flange
When ordering a Class 150 F304/L stainless steel threaded raised-face flange, verify nominal pipe size, thread specification, F304/F304L material, Class 150 rating, RF facing, ASME A/SA182 material requirements, ASME B16.5 dimensions, gasket, bolting, temperature, and process media.