Cello Products Inc. is the premier copper solder fittings manufacturer
in North America.  The products are used in plumbing, heating and related mechanical applications.  Cello produces fittings ranging in use from underground water and gas services to water distribution and air conditioning systems as well as drainage, waste and vent piping for use in residential, commercial, industrial and institutional applications.

Wrot and Cast pressure and DWV copper fittings:

Threaded Brass Fittings and Nipples:

Brass Pex Fittings: