Backflow protection devices - WATTS industries
Backflow protection devices - WATTS industries
Backflow protection devices - WATTS industries
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BACKFLOW PROTECTION DEVICES<br />
20<br />
EA & EB check valves<br />
Watts Industries brass and cast iron check valves<br />
prevent back-siphoning of potable water or water<br />
of unknown quality. The drain and regulation<br />
options allow you to check the operation of the<br />
device and its imperviousness to leaks without<br />
disassembling the check valve. The brass and<br />
cast iron check valves can be applied in<br />
both interior applications and other EA<br />
applications.<br />
Standardization<br />
The controllable check valves<br />
EA has been developed in<br />
conformity with EN 1717.<br />
Installation instructions<br />
Install the check valves EA<br />
according to national<br />
installation instructions.<br />
Special characteristics<br />
KIWA, DVGW, NF and/or BELGAQUA approvals<br />
Complies with the CEN-norm EN 13959<br />
Safety class EA<br />
Very low resistance<br />
Long life<br />
Hammer-free operation<br />
Noise-free operation<br />
Materials<br />
Body<br />
brass<br />
Plugs<br />
brass or plastic<br />
Nuts<br />
brass<br />
Connection unions brass<br />
Check valve plastic<br />
Seal<br />
rubber SBR<br />
Pressure spring stainless steel<br />
Model<br />
The check valve consists of:<br />
Brass body with test and drain ports<br />
Nuts and connection unions, as required<br />
Plastic check valve module<br />
Lipseal sealing principle<br />
Split valve stem<br />
Technical data<br />
Width range DN 15 - DN 65<br />
Connection sizes<br />
1<br />
⁄2" through 3" or 15 mm<br />
through 67 mm<br />
Test ports 1<br />
⁄4"<br />
Operational temperature 65 °C (max. 90 °C)<br />
Nominal pressure PN 10<br />
Max. operating pressure 1600 kPa (16 bar)<br />
Application area<br />
Liquids:<br />
drinking water<br />
EA check valves<br />
Type Nominal Connection sizes Total Approvals ifBt- Weight<br />
width length mark kg<br />
DN Inlet and outlet mm<br />
MU Chromed Male and female<br />
15 1<br />
⁄2" x 1 ⁄2" 47 KIWA 0.10<br />
20 3<br />
⁄4" x 3 ⁄4" 56 KIWA 0.17<br />
S Male to male<br />
15 3<br />
⁄4" x 3 ⁄4" 66 KIWA/DVGW/NF P-IX724/I 0.12<br />
20 1" x 1" 77 KIWA/DVGW/NF P-IX724/I 0.17<br />
25 1 1 ⁄4" x 1 1 ⁄4" 80 KIWA/DVGW/NF P-IX724/I 0.37<br />
32 1 1 ⁄2" x 1 1 ⁄2" 90 KIWA/DVGW/NF P-IX724/I 0.55<br />
40 2" x 2" 100 KIWA/DVGW/NF 0.84<br />
50 2 1 ⁄2" x 2 1 ⁄2" 115 KIWA/DVGW/NF 1.21<br />
PS Soldered connection unions<br />
15 connection unions Ø 15 97 KIWA/DVGW P-IX724/I 0.24<br />
20 connection unions Ø 22 120 KIWA/DVGW P-IX724/I 0.35<br />
25 connection unions Ø 28 128 KIWA/DVGW P-IX724/I 0.67<br />
32 connection unions Ø 35 148 KIWA/DVGW P-IX724/I 0.95<br />
40 connection unions Ø 42 166 KIWA/DVGW 1.51<br />
50 connection unions Ø 54 199 KIWA/DVGW 2.27<br />
65 connection unions Ø 67 225 3.42<br />
PU Male to female<br />
15 1<br />
⁄2" x 1 ⁄2" 137 KIWA/DVGW P-IX724/I 0.30<br />
20 3<br />
⁄4" x 3 ⁄4" 156 KIWA/DVGW P-IX724/I 0.44<br />
25 1" x 1" 169 KIWA/DVGW P-IX724/I 0.78<br />
32 1 1 ⁄4" x 1 1 ⁄4" 185 KIWA/DVGW P-IX724/I 1.17<br />
40 1 1 ⁄2" x 1 1 ⁄2" 202 KIWA/DVGW 1.74<br />
50 2" x 2" 241 KIWA/DVGW 2.65<br />
65 3" x 3" 125 1.57
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