£6.80 £8.16 inc. vat
Model 303 is an economy WRAS approved Single Check Valve available in 15 mm compression only.
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).
To avoid distasteful water from the hose every cold washing machine hose shall be fitted with a Water Regulations approved Single Check Valve – model EB20FM235 – as manufactured and 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 0.07 bar. The body shall be chrome plated brass with DN20 female inlet and DN20 male outlet.