What is capillary fitting?

[′kap·ə‚ler·ē ‚fid·iŋ] (engineering) A pipe fitting having a socket-type end so that when the fitting is soldered to a pipe end, the solder flows by capillarity along the annular space between the pipe exterior and the socket within it, forming a tight fit.

What are the two types of compression fittings?

There are two basic types of compression fitting:

• Type-A or non-manipulative fitting: These fittings are easy to install and do not require any modifications to the tubing.
• Type-B or manipulative fittings: Installation of Type-B fittings require flaring or belling the tubing.

Are compression fittings safe for water lines?

Although compression fittings are generally considered more reliable than threaded fittings, there are some potential problems. In general, compression fittings are not as resistant to vibration as soldered or welded fittings. Repeated bending may cause the ferrule to lose its grip on the tube.

Is compression same as NPT?

NPT (ends) look very different than compression (ends). NPT has no nuts or ferrules, but instead relies entirely on a thread connection. Like plastic tubing, the product designation for NPT (and pipe in general) is the internal diameter (ID), not tubing OD like compression.

Do solder ring fittings need flux?

You must always remember to use flux to help the solder to run around the joint in a capillary action. This will ensure a tight, even and watertight pipe join. This will also prevent oxidisation.

What is Type A compression fittings?

Type A compression fittings. Type A, or non-manipulative fittings enable the plumber to make a compression joint without carrying out any work on the tube ends other than ensuring that they are clean and cut squarely. Type A compression fittings can be used to join pipes above ground only.

Can you use compression fittings with PEX?

Compression fittings for PEX operate in much the same way as compression fittings for copper or other plastic piping. Making the connection involves placing the compression insert inside the end of the PEX tubing, sliding the compression ring over the tubing, then securing it with the compression nut.

Do you need PTFE tape on compression fittings?

Compression joints on brand new pipe work should be fine without PTFE tape, but older pipework is more likely to weep when things are moved around, i.e. you are changing a radiator over. Use of PTFE tape, plus a thin coat of plumber’s jointing compound, will ensure a nice tight seal and prevent leaks.

Are compression threads the same as pipe threads?

NPT or IPT pipe threads are tapered, Compression Fitting Threads are Parallel. That’s true even when the male or female fitting is comprised of the threaded end of a pipe. On the other hand compression fittings and flare fittings use threads that are cut in parallel, without taper.

What is a capillary fitting used for?

capillary fitting. [′kap·ə‚ler·ē ‚fid·iŋ] (engineering) A pipe fitting having a socket-type end so that when the fitting is soldered to a pipe end, the solder flows by capillarity along the annular space between the pipe exterior and the socket within it, forming a tight fit.

What is the seal in a compression fitting made of?

The seal in a compression fitting is made by a brass olive which is like a thick wedding ring and fits onto the outside of the pipe. Encyclopedia browser? Full browser?

What is the installation procedure for compression fittings?

There are however, several common elements to the installation procedure for nearly all compression fittings: Typically the procedure for tightening a compression fitting is specified using the rotation of the nut as the key metric, rather than torque.

What does capillarity mean in engineering?

(engineering) A pipe fitting having a socket-type end so that when the fitting is soldered to a pipe end, the solder flows by capillarity along the annular space between the pipe exterior and the socket within it, forming a tight fit. McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.