20mm Non-Return Isolating Valve — Female x Female — Lead Free | NRIBV-20F-LF Above Counter/Vessel Basins whilst the outer hose will

whilst the outer hose will capture the water

All fittings are lead free DR brass

Alloy ZP3 Finish Designer Matte Black Mounting  Bolt Through (M4 Stainless Steel thread) Specify The thickness of material when ordering

The rooftop waterproof membrane is then applied over the entire roof space and dressed into the flange

20mm Non-Return Isolating Valve — Female x Female — Lead Free | NRIBV-20F-LF Above Counter/Vessel Basins whilst the outer hose willThe AVG NRIBV 20F LF combines ball valve isolation and non return functions in a single compact forged DR brass body. The 20mm (3 4") female x female connection suits direct thread installation on hot water service pipework, eliminating the need for separate valve components and reducing potential leak points. A metal butterfly handle provides clear quarter turn on off operation and an inbuilt one way check valve prevents backflow from the hot water