|Isolating - Size||35 mm|
|Isolating - Integral PRV||No|
|Isolating - Backflow Prevention||Yes|
The main supply and distributing pipes serving several dwelling units such as in a block of flats where contaminated water might pass from one flat to another, industrial premises, schools, offices, hospitals.
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Where indicated on the drawing, a Branch Valve shall be installed – model BRV - as detailed in paragraph R15.24.1 of the Water Regulations Guide. The Branch Valve assembly shall comprise of a full bore DZR spherical servicing valve,  a low head loss DZR Double Check Valve and solder union connections as manufactured by Arrow Valves Ltd - Tel 01442 823123 www.arrowvalves.co.uk Insert as required  a pressure reducing valve c/w gauge,  a secondary water meter,  a pressure reducing valve c/w gauge and secondary water meter,