Backflow protection devices - Watts Industries

BACKFLOW PROTECTION DEVICES20EA & EB check valvesWatts Industries brass and cast iron check valvesprevent back-siphoning of potable water or waterof unknown quality. The drain and regulationoptions allow you to check the operation of thedevice and its imperviousness to leaks withoutdisassembling the check valve. The brass andcast iron check valves can be applied inboth interior applications and other EAapplications.StandardizationThe controllable check valvesEA has been developed inconformity with EN 1717.Installation instructionsInstall the check valves EAaccording to nationalinstallation instructions.Special characteristicsKIWA, DVGW, NF and/or BELGAQUA approvalsComplies with the CEN-norm EN 13959Safety class EAVery low resistanceLong lifeHammer-free operationNoise-free operationMaterialsBodybrassPlugsbrass or plasticNutsbrassConnection unions brassCheck valve plasticSealrubber SBRPressure spring stainless steelModelThe check valve consists of:Brass body with test and drain portsNuts and connection unions, as requiredPlastic check valve moduleLipseal sealing principleSplit valve stemTechnical dataWidth range DN 15 - DN 65Connection sizes1⁄2" through 3" or 15 mmthrough 67 mmTest ports 1⁄4"Operational temperature 65 °C (max. 90 °C)Nominal pressure PN 10Max. operating pressure 1600 kPa (16 bar)Application areaLiquids:drinking waterEA check valvesType Nominal Connection sizes Total Approvals ifBt- Weightwidth length mark kgDN Inlet and outlet mmMU Chromed Male and female15 1⁄2" x 1 ⁄2" 47 KIWA 0.1020 3⁄4" x 3 ⁄4" 56 KIWA 0.17S Male to male15 3⁄4" x 3 ⁄4" 66 KIWA/DVGW/NF P-IX724/I 0.1220 1" x 1" 77 KIWA/DVGW/NF P-IX724/I 0.1725 1 1 ⁄4" x 1 1 ⁄4" 80 KIWA/DVGW/NF P-IX724/I 0.3732 1 1 ⁄2" x 1 1 ⁄2" 90 KIWA/DVGW/NF P-IX724/I 0.5540 2" x 2" 100 KIWA/DVGW/NF 0.8450 2 1 ⁄2" x 2 1 ⁄2" 115 KIWA/DVGW/NF 1.21PS Soldered connection unions15 connection unions Ø 15 97 KIWA/DVGW P-IX724/I 0.2420 connection unions Ø 22 120 KIWA/DVGW P-IX724/I 0.3525 connection unions Ø 28 128 KIWA/DVGW P-IX724/I 0.6732 connection unions Ø 35 148 KIWA/DVGW P-IX724/I 0.9540 connection unions Ø 42 166 KIWA/DVGW 1.5150 connection unions Ø 54 199 KIWA/DVGW 2.2765 connection unions Ø 67 225 3.42PU Male to female15 1⁄2" x 1 ⁄2" 137 KIWA/DVGW P-IX724/I 0.3020 3⁄4" x 3 ⁄4" 156 KIWA/DVGW P-IX724/I 0.4425 1" x 1" 169 KIWA/DVGW P-IX724/I 0.7832 1 1 ⁄4" x 1 1 ⁄4" 185 KIWA/DVGW P-IX724/I 1.1740 1 1 ⁄2" x 1 1 ⁄2" 202 KIWA/DVGW 1.7450 2" x 2" 241 KIWA/DVGW 2.6565 3" x 3" 125 1.57