Amazon.com: DERNORD 1/2" Stainless Mini Ball Valve Female x Male NPT Thread with Stainless Steel Handle Pack of 2 : Everything Else
Amazon.com: WYNNsky Tank Mini Ball Valve, 1/4''NPT Female Threads×1/4''NPT Male Threads, Shut-Off Air Compressor Accessories Fittings : Industrial & Scientific
Pipe Tee 1/2" Female x 1/2" Male x1/2" Male Fittings Connector Brass NPT Pack of 1: Amazon.com: Industrial & Scientific