DN15 AFL and ED DZR Assy Nickel c/w Lever

Double Check Valves can be used to prevent backflow from shower hoses. The AFL Valve c/w Double Check Valve (model AFLED) limits the flow of water according to the Flow Limiting Cartridge installed, balancing the flow of water to the hose and providing Fluid Category 3 backflow protection in a single fitting.

AFL Valves may be used on hot and cold water plumbing systems and clean chilled water for A/C fan coil units- not suitable for heating. Valves should be accessible and fitted at points of use. See AFL Cartridge Datasheet. Examples include- Wash Basin,

• Backflow Prevention Yes
• Integral Strainer No
• Size DN15

Every water outlet or appliance shall have a combined Servicing and Automatic Flow Limiting Valve to automatically limit the flow of hot and cold water – model AFL – as manufactured and distributed by Arrow Valves Ltd – Tel 01442 823123 www.arrowvalves.co.uk. A flow limiting cartridge[1] shall be installed through the side port – after fitting and flushing pipes in accordance with the BS6700 Table 3. The Cartridge flow rate shall be as indicated in the table below and a colour coded identity disc fitted after installation of the Cartridge. The valves shall be nickel-plated and fitted with a green aluminium arrow lever. [2,3] Every WC shall be fitted with an AFL Servicing Valve fitted with a strainer only cartridge (no flow limiter) in accordance with clauses G11.1 & R25.6 respectively.

Insert as required
[1] “incorporating a 260 micron strainer”
[2] The valve assembly shall incorporate a double check valve assembly (ED device).
[3] The valve assembly shall incorporate a single check valve assembly (EA device).

Recommended Flow Rates – Based on BS6700
Appliance
Lt/s

Hand basin / Washbasin
0.13

Kitchen Sink G1/2″
0.17

Kitchen Sink G3/4″
0.25

WC Flushing Trough (per jet)
0.13

Shower – Single Feed (refer to “Equi-Flow”)
0.13

Bidet
0.10

Bath G3/4″
0.43

WC Cistern
–
260 µm Strainer
Washing Machine1
0.20

Dishwasher1
0.13

Note – 1. The manufacturer should be consulted for required flow rates