Arad ADM20 M 20 mm 3/4 inch BSP(M) plastic water flow meter 83 lpm 10 bar (145 psi)Arad ADM20 M 20 mm 3 4 inch BSP(M) plastic water flow meter 83 lpm max 10 bar (145 psi) max Composite plastic body Arad Multi Jet type magnetic water meter features: only one moving part (the impeller) in contact with the water minimum wear and utmost reliability magnetically driven sealed register wide clearances in the measuring chamber and negligible area of contact between static and moving parts high reliability even in hard water