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Keith Specialty Store

6791 Rt 119 Hwy N,  Marion Center, PA 15759
800-705-8838, 724-397-2228 - FAX , 724-397-8838 - Int'l
8:00am-6:00pm  M-F, 8:00am-3:00pm Sat. (ET)


Happy Thanksgiving to everyone.  We will be open on Friday, Nov 27. 

Chrome Nipples and Valves Copper Brass Threaded Fittings Brass Flare Fittings Brass Insert Fittings SharkBite Fittings

 

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Plum Brass Compression-groups

Compression fittings are used primarily for water on copper, vinyl, or poly (plastic) tubing. They may be used for oil, but we recommend flare fittings instead. 

Unless labeled "lead free", these fittings may not be used in potable water systems.

Do NOT use these compression fittings for lines carrying pressurized gases.

Compression threads are a very different pitch from iron pipe size threads (or national pipe thread taper).  Use a male or female adapter to transition between them.
All compression fittings are listed by OD [outside diameter].  See chart for OD to ID comparison.

o.d. [outside diameter] to i.d. [inside diameter] tubing size conversion

tubing o.d.   tubing i.d.
1/4" 1/8"
3/8" 1/4"
1/2" 3/8"
5/8" 1/2"
Example:
Use 1/2" flare fittings
on 3/8" i.d. copper.
For small sizes, i.d. plus 1/8" equals o.d..

 

Definitions:  
  comp = male threaded compression fitting.
  mipt = male iron-pipe-size thread fitting.
 

fipt = female iron-pipe-size thread.

04-010.jpg compression ferrules (rings) Replacement ferrules (rings) for compression fittings. Use brass ferrules on copper and aluminim tubing. Use nylon ferrules on vinyl and poly tubing. Never re-use ferrules.


04-040.jpg compression nuts (female compression) Replacement brass compression nuts for compression fittings. Compression nuts can be re-used. Examine them for hairline cracks or stripped threads.


04-311.jpg compression x compression couplings (unions) Compression couplings are used to join two pieces of the same size tubing. They also act as unions because they can be taken off and put back together by loosening one or both nuts.


04-330.jpg compression x compression reducer couplings (unions) Compression reducer couplings are used to join two pieces of different size tubing. They also act as unions because they can be taken off and put back together by loosening one or both nuts.


04-128.jpg compression x male (mipt) adapters Compression x male adapters attach tubing to a female (fipt) pipe thread fitting.


04-246.jpg compression x female (fipt) adapters Compression x female adapters attach tubing to a male (mipt) pipe thread fitting or threaded pipe.


04-411.jpg compression x compression 90 degree ells Compression ells join two pieces of the same size tubing to form a 90 degree bend. Use these compression ells when a short radius turn is needed to prevent kinking the tubing.


04-446.jpg compression x male (mipt) 90 degree ells Compression x male ells attach a piece of tubing to a female (fipt)fitting to form a 90 degree bend. Use these compression x male ells when a short radius turn is needed to prevent kinking the tubing.


04-511.jpg compression x compression x compression tees Compression tees join three pieces of the same size tubing to form a tee connection. Use these compression tees to branch off of an existing tubing.


04-625.jpg compression x copper sweat (solder) adapter Compression x copper sweat adapters attach tubing to a piece of copper by soldering.


04-807.jpg compression x compression shut-off valves Compression shut-off valves join two pieces of the same size tubing and allow the flow of liquid to be turned off and on.



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