If you're looking for 1 inch copper fittings then Nibco has a nice selection from Amazon. For home improvements and plumbing fittings the 1 inch copper fittings are available in a variety of styles and designs. Some styles include the copper elbow, copper cast union, copper cast tee, copper tube cap, copper coupling, copper adapter and more. The 1 inch copper fittings and all copper supplies are useful for multiple home projects. 1 inch Nibco # 733 Copper Cast Union
# Nibco fittings are made from the highest quality raw materials available
# Nibco fittings are produced to meet requirements of applicable standards wherever practicable
# For residential and commercial systems such as potable water and fire sprinkler applications 
1 inch Nibco # 712 Copper x Copper x Female Cast Tee
Package of 10 1 inch (nominal size) Nibco # 712 Copper x Copper x Female Cast Tee. These are made in the USA by the premier manufacturer of copper fittings, Nibco. 
the 1 copper fittings are found at amazon.com
| 