Metering pumps, also known as dosing pumps or proportioning pumps, are precision pumps designed for accurate and controlled dosing or metering of fluids. They are commonly used in various industries such as water treatment, chemical processing, pharmaceuticals, and food and beverage. Metering pumps are specifically designed to deliver precise flow rates and maintain consistent dosing over a wide range of operating conditions. Here are some key features and components of metering pumps:

1. Pumping Mechanism: Metering pumps utilize various pumping mechanisms, including reciprocating piston, diaphragm, or solenoid-driven pumps. These mechanisms provide the required precision and control for accurate dosing.
2. Stroke Length Adjustment: Metering pumps often feature an adjustable stroke length mechanism. By changing the stroke length, the pump can adjust the volume of fluid delivered per stroke, allowing for precise control over the dosing rate.
3. Stroke Rate Adjustment: Metering pumps typically offer adjustable stroke rates, which determine the frequency at which the pumping mechanism operates. Controlling the stroke rate enables fine-tuning of the dosing process to match specific application requirements.
4. Check Valves: Metering pumps are equipped with check valves at the inlet and outlet ports. These valves ensure unidirectional flow, preventing backflow and maintaining accurate dosing.
5. Control and Monitoring Systems: Modern metering pumps often incorporate advanced control and monitoring systems. These systems may include digital displays, programmable settings, and feedback mechanisms for real-time monitoring and adjustment of the dosing parameters.

Metering pumps offer several advantages, including precise dosing accuracy, repeatability, and the ability to handle a wide range of viscosities and chemical compositions. They are commonly used for chemical injection, pH adjustment, disinfection, lubricant dosing, and other applications that require precise fluid control.

Proper selection and sizing of metering pumps depend on factors such as flow rate, pressure requirements, fluid characteristics, and the desired dosing accuracy. Regular calibration, maintenance, and replacement of worn parts are necessary to ensure the pump’s accuracy and reliability.

It’s important to follow manufacturer guidelines and recommended practices for installation, operation, and maintenance of metering pumps to ensure their optimal performance and longevity.

Related Links

• • Pump info
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