rotary piston flowmeter(positive displacement flowmeter, oscillating Piston flowmeter)can measure even when the flow rate is very little.

Advantages:
1. Wide Flux: 1L/H-16000L/H
2. Optimized structure: No flow adjustment is required.
3. Measuring medium: Petro, diesel oil, distilled water, juice, chemical reagent etc
4. Safety: Flow through the meter continues even when piston was stuck by impurity. .
5. High precision: Up to 0.3%...