Details: Compare to Watts TK99E, the Acugauge TK99E Backflow Test Kit is a 5-needle valve test kit used by certified backflow testers for testing backflow preventer assemblies. With the Acugauge TK99E backflow test kit you are able to test all makes, models and sizes backflow assemblies, including irrigation, domestic, isolation, containment and fire. The Acugauge TK99E backflow test kit ships fully assembled and with everything needed to start testing right away: hoses, adapters and carrying case. The Acugauge TK99E backflow test kit also comes with a calibration certificate valid for one year. The Acugauge TK99E backflow test Kit is used for testing the following domestic, irrigation and fire-line backflow preventer assemblies: Reduced Pressure Zone (RPZ) Double Check Valve (DC) Pressure Vacuum Breaker (PVB) Spill-resistant Pressure Vacuum Breaker (SPVB) Reduced Pressure Detector Assembly (RPDA) Double Check Detector Assembly (DCDA) 5-valve configuration (high, low, bypass, bleed high, bleed low) 4.5" differential pressure gauge; scale: 0 -15 PSID extra line pressure gauge for reading system pressure, now required by most water purveyors; scale: 0-160 PSI Full set of test cock adapters: (3) 1/4", (3) 1/2", (3) 3/4" (total of 9) Full set of backflow test hoses (total of 3) 36", color-coded (red, blue and yellow) with ergonomic knurled swivel couplings for easy on and off without tools Aluminum foam-lined instrument carrying case Standard 5-valve operating procedure Maximum Working Temperature: 210°F Maximum Working Pressure: 175 PSI Ships fully assembled - start testing right out of the case! Stored, Packed & Shipped by Amazon! Eligible for Free Shipping Amazon Customer Service 24 x 7 Track your delivery to your door TRY IT FREE FOR 30 DAYS. This might change your mind. All Acugauge products are protected by a 30-DAY MONEY BACK GUARANTEE. If you don't love it, return it - no sweat! We'll even pay your return shipping!