Allpoints 56-1149 Model 9D Dual Check Backflow Preventer w/Atmospheric Vent 1/2" FPT Union Fitting

watts model 9d backflow preventer, 1/2" fpt union. dual check backflow preventer with atmospheric vent for continous pressure. max temp 250f, max pressure 175 psi. this product contains more than 0.25 lead. it is illegal to use this product in potable services such as drinking water, handwashing, food preparation or dishwashing.