Our 3/4" Water Meter (SPWM-075-CF) has received California Type Approval from the California Department of Weights and Measures. This certifies that the meter's accuracy exceeds the threshold required for revenue purposes, like submetering and billing rental units for example.
We also have five models that are NSF/ANSI/CAN 61 certified:
SPWM-075-HD-NSF - 3/4" Water Meter, stainless steel, NSF, HD, pulse output
VSPWM-075-HD-NSF - 3/4" Vertical Water Meter, stainless steel, NSF, HD, pulse output
SPWM-100-NSF - 1.0" Water Meter, stainless steel, NSF, pulse output
SPWM-150-NSF - 1.5" Water Meter, stainless steel, NSF, pulse output
SPWM-200-NSF - 2.0" Water Meter, stainless steel, NSF, pulse output