SDTC Tech 2-Pack Brass Pipe Fitting 1/4" NPT Thread Male to 1/2" NPT Thread Female Reducer Adapter - Amazon.com
Everbilt 1/2 in. Copper Pressure Cup x MIP Male Adapter Fitting C604HD12 - The Home Depot
Earl's 961604: Steel AN to Pipe Adapter Fitting -4AN To 1/8" NPT - JEGS
Proline Series 3/4-in x 1/2-in Threaded Female Adapter Fitting in the Brass Fittings department at Lowes.com
1/2" Male NPT Adapter -to- CGA Cylinder Fittings
Amazon.com: Tee Pipe Adapter 1/2" Female x 1/2" Male x1/2" Male T Adapter Brass Pipe Fitting Brass Tee Adapter 1/2x 1/2x1/2inch : Industrial & Scientific
Everbilt 3/4 in. FHT x 1/2 in. MIP Brass Adapter Fitting 801779 - The Home Depot
LTWFITTING 1/4 in. FIP x 1/8 in. MIP Brass Pipe Adapter Fitting (5-Pack) HF1024205 - The Home Depot
LTWFITTING 1/2 in. FIP x 1/4 in. MIP Brass Pipe Adapter Fitting (5-Pack) HF1028405 - The Home Depot
What's the difference between fittings and adapters? - Hose Assembly Tips