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Copper Ball Valve 1/2" Thread Valve Water Heater Connect Valve Shut Off Valve for Water Oil Gas, 175 PSI, 1/4 Turn Operation Handle(Yellow) : Amazon.co.uk: Business, Industry & Science
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The ball valve is used as shut-off valves in the distribution of hot and cold water. - Mereo.info
Ball Valves | Brassware, Valves & Taps | Screwfix
All copper union ball valve 1/2 inch water heater gas valve DN15/lpg switch valve/gas valve - Fluid Power and Industrial Equipment Catalogue
3/4" Ball Valve Water Heater Service Valve Shut-Off Valve Pipe Fittings for Water Oil Gas, Copper, 1/4 Turn Operation Handle(Yellow) : Amazon.co.uk: Business, Industry & Science
SharkBite U3068FLEX18BVLF Flexible Water Heater Connector with Ball Valve, 1/2-Inch CTS X 3/4-Inch FIP X 18-Inch Length : Amazon.co.uk: DIY & Tools
Adding a Shutoff Valve to a Water Heater | Terry Love Plumbing Advice & Remodel DIY & Professional Forum