Round Tube Fittings and Pipe Fittings

Round tube fittings

Stainless Steel round tube fitting are used extensively in fluid systems, and particularly in the Sanitary industries. Normally 2they are made with 304 and 316L Stainless Steel construction, which minimizes the likelihood of stress corrosion cracking.

There are 3 main mechanical methods for connecting two lengths of tube together.

1. Flared fittings – where the end of the tube is flared with a tool and then contained within a nut, sleeve and body.
2. Single ferrule fittings – where the ends of the tube are placed into a fitting with a single compression ring, a body and nut.
3. Double ferrule fittings – where the ends of the tube are placed into a fitting with two separate compression rings, body and nut. (Also known as the twin ferrule fitting, this is not strictly correct as the two rings are of different shape and length.)

For the purposes of this article the focus will be on the double ferrule fitting. This style of fitting, like all the others, has one basic function. To securely join tubes together in a safe, seal tight assembly. Close tolerance machining on high quality CNC machines allows for consistent production of all components.

Round tube fittings

Materials such as high Nickel alloys, high temperature alloys, duplex and super-duplex’s are coated with an anti-gall agent in the same way. However, Molybdenum Disulphide can be used as an alternative. These materials are selected in order to be compatible with the fluid media contained within them.

 

Fittings are produced in a vast range of styles with manufacturers offering tees, elbows, unions, male connectors, female connectors and many others. Reducers allow the installers to change from one tube size to another, even from metric to imperial. Please visit us to know more about round tube fittings.