|Fluid Category 2 - Size||DN20|
|Fluid Category 2 - Material||DZR Brass|
|Fluid Category 2 - Test Points||Non-Verifiable|
Backflow prevention for fluids in category 2 (refer to Schedule 1 of Water Regulations July 1999). Fluid Category 2 includes- Fire sprinkler systems without additives; Hot water; Water cooled air conditioning without additives; Branch to steel pipes; Domestic softening plant (common salt regeneration).
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Where indicated on the drawing a low headloss type single check valve shall be installed – model EB420 - as distributed by Arrow Valves Ltd – Tel 01442 823123 www.arrowvalves.co.uk. The pressure drop across the assembly at 1.5 m/s shall be less than 0.08 bar. The body shall be DZR brass with compression connections.