Class 150 Forged Carbon Steel Reduced Thread, Raised-Face Flange
Class 150 ASTM A105 / ASME SA-105 Reduced Thread Flange
The Class 150 ASTM A105 / ASME SA-105 Forged Carbon Steel Reduced Thread Raised-Face Flange provides a convenient solution for connecting a smaller threaded pipe size to a larger flange connection. Combining a reduced threaded bore, forged carbon steel construction, and raised-face sealing surface, this flange can simplify industrial piping transitions while reducing the need for separate reducing fittings.
ASTM A105 / ASME SA-105 Forged Carbon Steel
Manufactured from ASTM A105 / ASME SA-105 forged carbon steel, this reduced threaded flange provides excellent mechanical strength, toughness, and durability. A105/SA-105 is commonly specified for forged steel flanges, fittings, valves, and other pressure-containing piping components used in industrial systems.
The Class 150 designation represents the ASME pressure class and does not mean the flange is limited to 150 PSI. Allowable working pressure depends on material, temperature, and applicable pressure-temperature ratings.
Reduced Thread Flange Design
A reduced threaded flange features a threaded opening smaller than the flange's nominal outside connection size. This configuration allows compatible male-threaded pipe to connect directly to the flange while providing the dimensions and bolting arrangement associated with the larger flange size.
Because the pipe connection is threaded, installation does not require welding, making reduced thread flanges useful for appropriate industrial, utility, mechanical, and process piping applications.
Raised-Face Flange Construction
The raised-face (RF) design incorporates an elevated gasket seating surface that concentrates bolting force over the gasket area, helping provide dependable sealing between compatible mating flanges.
Class 150 A105/SA-105 reduced threaded flanges should be selected according to the applicable dimensional and piping specifications. When ordering, verify the flange size, reduced threaded outlet size, thread type, Class 150 rating, raised-face dimensions, and A105/SA-105 material.
For industrial contractors and piping professionals, Class 150 A105/SA-105 reduced thread raised-face flanges provide strong, compact, and serviceable connections for reducing threaded piping systems.