What is a SW union?
Socket weld Union is a pipe attachment detail in which a pipe is inserted into a recessed area of a Valve, fitting or flange. In contrast to buttweld fittings, Socket Weld Fittings are mainly used for small Pipe Diameters (Small Bore Piping); Generally for Piping whose Nominal Diameter is NPS 2 or smaller.To join pipe to Valves and Fittings or to other sections of Pipe, Fillet-type seal welds be used. Socket Welded Joints construction is a good choice wherever the benefits of high leakage integrity and great structural strength are important design considerations
Specification of SW union
|Carbon Steel||ASTM A150/A150N|
|Low Tem Carbon Steel||ASTM A350 LF2/LF3|
|Pipeline Steel||ASTM A694 F42/46/56/60/65|
|Alloy Steel||ASTM A182 F11/F12/F5/F9/F91/F92|
|Stinless Steel||ASTM A182 F304/304L/304H,316,316L,310S,317,347,904L|
Advantages of SW union
Advantages of pipe union:
There are various advantages of pipe unions like:
To provide a leak-proof disconnection point in any piping system.
Used for inserting metering and regulating devices into any plumbing application.
Can connect piping system to vessels.
Can join two pipes of different size together.
Can easily remove the join between two pipes.
Easy to install.