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Amazon.com: 1 Inch Ball Valve, Premium 304 Stainless Steel Full Port Forged NPT Ball Valve for Water Oil and Gas with Long Handle Shut Off Switch, 1000 WOG ( 1 Piece, FNPT
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Full-Port Valves for Gravity-Fed Tanks/Cisterns - Rainwater Harvesting for Drylands and Beyond by Brad Lancaster
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