Stainless steel unions are fittings that allow for the easy disconnection and reconnection of pipes without the need for tools. There are several types of unions in stainless steel, each serving specific purposes.
Threaded Union:
This type of union has female threads on both ends, allowing it to be easily screwed onto compatible male threaded pipe ends.
Socket Weld Union:
Socket weld unions have a socket or recess on one end and a male end on the other. The male end is inserted into the socket of another fitting, and fillet welds are applied to secure the joint.
Butt Weld Union:
Butt weld unions are welded to the pipe ends, providing a smooth, continuous flow. The welding process involves butt welding, where the ends are aligned and welded.
Flanged Union:
Flanged unions have flanges on both ends, allowing for easy connection or disconnection using bolts and nuts. This type is commonly used in applications where frequent dismantling is required.
Compression Union:
Compression unions consist of two ferrules and a nut. The ferrules are compressed onto the pipe by tightening the nut, creating a leak-tight seal. These are often used in instrumentation and hydraulic systems.
Quick Disconnect Union:
Quick disconnect unions are designed for rapid and tool-free disconnection. They are often used in applications where frequent assembly and disassembly are necessary.
Grooved Union:
Grooved unions have grooves on the ends that match grooves on the pipe ends. A gasket is placed between the grooves, and the union is secured with clamps. This type is common in piping systems that require flexibility.
Press-Fit Union:
Press-fit unions use a press-fit connection method, where the pipe is inserted into the fitting, and a pressing tool is used to create a secure connection.
Hygienic Union:
Hygienic unions are designed for use in sanitary applications, such as in the food and pharmaceutical industries. They often have smooth surfaces and are easy to clean.
Camlock Union:
Camlock unions use cam arms to quickly connect or disconnect two pieces. They are commonly used in industries like petrochemical, agriculture, and water management.
