1. Lower price

2. When the flow rate reaches 76m3/h, the flow rate is within the range of 10% to 100%, the measurement accuracy can reach ± 1%, and the maximum pressure can reach 350 MPa. When the outlet pressure changes, the flow is almost constant.

3. It can transport high viscosity medium, not suitable for transporting corrosive slurry and dangerous chemicals.

4. The shaft seal is a packing seal with leakage, and the packing shall be adjusted periodically. The packing and plunger are easy to wear, so it is necessary to pressure wash and discharge the packing ring.

5. No safety relief device.