Charlotte Pipe 1/2 in. PVC Schedule 40 S x S Coupling PVC021000600HD - The Home Depot
Eastman 3-7/8 Inch Long Pattern Compression Coupling, 1/2 Inch IPS, Galvanized Steel, 20562 - Amazon.com
Stainless Steel 304 Cast Pipe Fitting, Reducing Coupling, Class 150, 1" X 1/2" NPT Female: Industrial Pipe Fittings: Amazon.com: Tools & Home Improvement
Charlotte Pipe 2 in. PVC Schedule 40 S x S Coupling PVC021001600HD - The Home Depot
Largest selection of common and unique PVC pipe fittings
Southland 1/2 in. Galvanized Malleable Iron FPT x FPT Left & Right Merchant Coupling Fitting 511-423HN - The Home Depot
Aluminum, 4 in x 4 in Fitting Pipe Size, Half Coupling - 60PW59|ZUSA-PF-9452 - Grainger
The Plumber's Choice 1/2 in. Straight Coupling Pipe Fittings Push to Connect PEX Copper CPVC Brass (5-Pack) 125UPSC - The Home Depot
Pipe Fittings - Half Coupling, Female NPT x Butt Weld, 304 Stainless Steel, Class 3000 | USA Industrials | MISUMI
Amazon.com: SUNGATOR Fittings 1/2 Inch, Pushfit Plumbing Fittings 1/2 Inch, Push 1/2 Inch Coupling Fittings, No Lead Brass Push to Connect Fittings for Pex, Copper, CPVC, with 1 Disconnect Clip, Pack of