Class 300 F304/L Stainless Steel Blind, Raised-Face Flange
Class 300 F304/L Stainless Steel Blind Raised-Face Flange
The Class 300 F304/L Stainless Steel Blind Raised-Face Flange manufactured to ASME A/SA182 and ASME B16.5 requirements provides a strong, corrosion-resistant method for closing the end of an industrial piping system, valve connection, pressure vessel nozzle, or unused flanged opening. Its solid forged stainless steel construction provides dependable sealing while maintaining a removable bolted connection for future system access.
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 minimize carbide precipitation associated with welding temperatures.
F304/L stainless steel flanges are widely used in chemical processing, food and beverage production, pharmaceutical manufacturing, water treatment, power generation, utilities, manufacturing, and industrial process piping systems.
Class 300 Blind Flange Design
A blind flange has no center bore, allowing it to completely close and isolate a flanged piping opening. Unlike a permanent welded closure, a bolted blind flange can be removed for inspection, cleaning, maintenance, pressure testing, piping modifications, or future system expansion.
The Class 300 designation identifies an ASME pressure class rather than a maximum working pressure of exactly 300 PSI. Actual allowable pressure depends on material grade, flange size, operating temperature, and applicable pressure-temperature ratings.
Raised-Face Flange Construction
The raised-face (RF) design incorporates an elevated gasket seating area that concentrates bolting load over the gasket, helping create an effective seal between compatible flanged components.
ASME B16.5 establishes applicable flange dimensions, facing requirements, bolt-hole patterns, tolerances, and pressure-temperature ratings.
Selecting a Class 300 F304/L Blind Flange
When ordering a Class 300 F304/L stainless steel blind raised-face flange, verify nominal pipe size, F304/F304L material, Class 300 rating, RF facing, ASME A/SA182 material specification, ASME B16.5 requirements, gasket selection, bolting, operating temperature, and process media for dependable industrial piping performance.