01442 823 123 enquiries@arrowvalves.co.uk

Double Check Valve Brass - 440

Double Check Valves with DZR brass valve bodies and compression or female BSP connections. Sprung-loaded Cartridges with resilient seats provide positive closure, no water hammer and low opening pressure. Hot-stamped DZR compression nuts with fine thread minimises the torque required to make the joint.
Product Code: ED440
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Price From: £18.50

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Additional Information

Fluid Category 3 - Powered No
Fluid Category 3 - Test Points Non-Verifiable


Backflow prevention for fluids in categories 1 - 3 (refer to Scheduled 1 of Water Regulations July 1999) Supply to flats and apartments - refer to Branch Valve Domestic Washbasins, Baths and Showers - refer to ED235 Domestic Clothes and Dishwashing machines (houses only) CWF Primary and Heating circuits (houses only with removable quick fill loop) - see Filling Valve with CA device Hose Union taps (houses only - check valves in taps illegal)

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Specification Clauses

Every Double Check Valve assembly shall have a DZR brass body with compression fittings to BS864-2 – model ED440 - as distributed by Arrow Valves Ltd - Tel 01442 823123 www.arrowvalves.co.uk. The pressure drop across the assembly at 1.5 m/s pipe velocity shall be less than 0.35 bar. The body and compression connections shall be DZR brass.