Get the 1/2" Brass Union for Copper Pipes at your local Home Hardware store. View online and pick-up in store.
1/2 Brass Union for Copper Pipes
Universal Copper Union And Brass 3 4 14698, AC Pro Store
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How To Use Compression Fittings On Copper Pipes - 1-Tom-Plumber
Easily install this brass union to unite two 1/2 pipes together.
1/2 Brass Union for Copper Pipes
Is there a problem with galvanised steel water pipe connected to copper pipe for water going into hot water tank? - Quora
Brass Flare Union, For Plumbing Pipe, For Gas Pipe at Rs 25/piece in Mumbai
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Copper tubing - Wikipedia