This 1/2" x 1/2" straight copper coupling is from Quick Fitting. It is a push-to-connect fitting meaning it installs in seconds on copper, PEX, PE-RT, and CPVC. The fitting is removable and reusable. No glue or flames are required. Certified lead-free. Quick Fitting part number CH811R.
EC Part Number: #19220
Manufacturer Number: CH811R
Manufacturer: Quick Fitting