Like our new paper weight to hold down all our bills 😆? Actually it’s a back flow demo test rig being prepped. Back flow valves prevent any pollutants being drawn back into our mains water supply – SUPER important chunks of metal. #backflowprevention #protectourwatersupply #worldplumbers #masterplumbers #plumberslife #plumbinglife #backflowpreventiongeelong #backflowpreventiontorquay