|Fluid Category 3 - Size||DN20|
|Fluid Category 3 - Powered||No|
|Fluid Category 3 - Test Points||Non-Verifiable|
Backflow prevention for fluids in categories 1 - 3 (refer to Schedule 1 of Water Regulations July 1999); Supply to flats and apartments; Domestic Washbasins, Baths and Showers; Domestic Clothes and Dishwashing machines (houses only); CWF Primary and Heating circuits (houses only); Hose Union taps (house gardens only)
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Every Double Check Valve assembly shall be the exceptionally low head loss type – model ED316 - as manufactured and distributed by Arrow Valves Ltd - Tel 01442 823123 www.arrowvalves.co.uk. The pressure drop across the assembly at 3 m/s pipe velocity shall be less than 1.3 m. The body shall be 316 stainless steel and press-fit union connections shall be used.