Backflow protection devices - Watts Industries

BACKFLOW PROTECTION DEVICESDimensionsPressure loss curve DN 15 and DN 2018Ø 40 mmDebit / debiet Flow mM 3 /H /hArticle number Item L H WeightA Ømm mm kg.407015290 CA 9C 1 ⁄2" bi x bi* 121 129 0,59407020290 CA 9C 3 ⁄4" bi x bi* 151 129 0,66* device is supplied incl. funnel setOperationYou can start to use the CA 9C byslowly opening the stop cock for theCA 9C.InspectionAccording to national standards a CAbackflow protection device must beinspected at least once a year.Functional testsIt is possible to test the CA 9C to seewhether it functions correctly.AssemblyAssemble the CA 9C after the water supply system has been cleanedin the prescribed way. Install the CA 9C in front of the dangerousappliance. This prevents polluted water from flowing back into thedrinking water system. Install the CA 9C horizontally and when thesystem is dead.The integrated filter on the inlet side of the device sees to it that thenon-return valves and relief valve are protected against unnecessarypollution. Regularly clean this filter.In conformity with the national installation instructions, a stop cock (1)with draining device (2) must be placed in front of the CA 9C. Therelief opening must be connected to a discharge pipe via the enclosedfunnel.12Material specificationsBody Brass (DZR)Spring Stainless steelSealing RubberFunnel PlasticTechnical specificationsDiameter nominal DN 15, DN 20Connection F 1 ⁄2", 3 ⁄4"Working pressure PN 10Max. temperature 65 °CConnection tundish Ø 40 mmApprovalsBELGAQUAKIWASVGWNFWRAS