1/2 NPT Female Solid Brass Three Piece Pipe Union Fitting Adapter – compressor-source

1/4 NPT Female Nickel Plated Brass Pipe Union Adapter Fitting Solid C – compressor-source

YullSorom Brass Pipe Fittings Water Hose Adapter,G 1/2 Female to 3/8 Male Reducer Adapter,Compression Fitting for Kitchen Bathroom Faucet Supply Hose, 4pcs Stop Valve Adapter With Rubber Washer 4 Pack

Uenede 2PCS Solid Brass Bulkhead Fitting 1/2”Female x 3/4”Male Double Threaded Bulkhead Water Tank Connector : Industrial & Scientific

3/4 x 3/4 Female Inverted Flare x Male NPTF Adapter Solid Yellow Brass 202JJ

1/2 NPT Female Solid Brass Three Piece Pipe Union Fitting Adapter – compressor-source

Pipe Fittings & Accessories – tagged Unions – compressor-source

1/2 x 1/4 Male NPTF Pipe Reducing Hex Nipple Solid Brass Pipe Fittin – compressor-source

3/8 Double Female National Pipe Thread Galvanized Steel Union Fitting – compressor-source

1/4 NPT Female Solid Brass Three Piece Pipe Union Fitting Adapter 104C

Water Source 1-1/2 in. Brass Male Insert Adapter MA150NL - The Home Depot

Adapter 3/4 Male x 1 “ Female Threaded Brass Construction NPT Pipe Fittings