model 247 bellows movement is mechanically transmitted to the index system, which in turn places the index pointer. The Model 247 is a 6 “(152 mm) mobile marker located in a metal bearing box with a built-in 3-valve tank, cut pipes, and neoprene hoses. DP varies 0-30″w.c. Portable Backflow Testers available (Model 246 BFT–3 inches; Model 247 BFT–6 inches), powered by 224C DPU.
M247 functions: Pressure Overrange Protection (up to 500 PSI)–no meter harm owing to peaks. Easy learning–150 distinct 0.1 PSID divisions label the big scale. 246 BFT’s tiny 3-inch scale is a compact tester. 247 BFT’s big6-inch scale offers simple learning. Five easy-to-use tubes–engineered with tubular metal, corrosion-resistant, tubes and smooth seats. Unique built-in tube–allow a stress gage to be added to achieve continuous stress viewing during experiments.