NAC445A.67245. Cross-connections and backflow: Duties of certified backflow prevention assembly tester.  


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  • A certified backflow prevention assembly tester shall:

         1. Perform his or her field testing of assemblies for the prevention of backflow in accordance with the provisions of the Manual of Cross-Connection Control.

         2. Use, for the testing of reduced pressure principle assemblies, double check valve assemblies and pressure vacuum breakers, a differential pressure gauge that has:

         (a) A differential range of at least zero to 15 psi; and

         (b) Graduations of not more than 0.2 psi.

         3. Ensure that his or her testing equipment:

         (a) Is calibrated to the manufacturers’ specifications not less than annually; and

         (b) Has all necessary hoses and fittings.

     (Added to NAC by Bd. of Health, eff. 2-20-97)