Description

A threaded union is a type of pipe fitting designed to join two pieces of pipe together without welding. A threaded union consists of three main parts: two threaded connectors (male and female) and a locking ring (nut) to tighten the connection. They are manufactured from a variety of materials such as carbon steel, stainless steel, copper and brass.

Applications

• Water supply and drainage systems : Threaded joints are widely used in water supply and drainage systems due to their ease of installation and removal.
• Heating and Air Conditioning Systems : Used in HVAC (Heating, Ventilation, and Air Conditioning) systems to connect air and water pipes.
• Oil and Gas Industry : Used to connect oil, gas and chemical pipes in refineries and chemical manufacturing facilities.
• Food and beverage industry : Used in food and beverage piping systems due to its ability to be easily disassembled for cleaning and maintenance.

Standards

The ASME B16.11 standard provides specific dimensional, material, and technical requirements for threaded pipe fittings, including Threaded Unions. Here are some key points of the ASME B16.11 standard:

• Size : Specifies the nominal size (NPS) and outside diameter (OD) of the fittings.
• Materials : Specifies the types of materials allowed, including carbon steel, alloy steel, and stainless steel.
• Pressure and temperature : Specifies the maximum working pressure and operating temperature range for each material.
• Inspection and testing requirements : Include quality control and pressure testing methods to ensure the integrity of the fittings.
• Marking and identification : Specifies how information about size, material and manufacturer is marked on products for easy identification.

Threaded Union Size and Thickness Table

Threaded Union Material Summary