Flow Rate Automatic Controllers for Pipelines from United States
Instruments that automatically adjust valves to maintain constant flow rates in liquid pipelines using flowmeter feedback and PID algorithms. These automatic regulators for liquid flow variables fall under tariff item 9032.89.00 as they continuously measure and correct flow.
Duty Rate — United States → Canada
0%
Import Tips
• Clearly document the PID control functionality to demonstrate automatic regulation rather than simple flow measurement
• Ensure the controllers comply with Canadian pipeline safety standards
• Provide CBSA with flowmeter specifications and control loop diagrams