Combining pressure reducing valves, back pressure valves, and pulsation dampeners to eliminate pipeline pulsation and water hammer, ensuring metering pump dosing accuracy.
When metering and diaphragm pumps operate, pipeline pressure fluctuations directly affect dosing accuracy, while the inherent pulsation of positive displacement pumps causes water hammer impact on the piping system. This solution recommends installing a back pressure valve (preventing siphonage and eliminating dosing-point pressure fluctuation effects) combined with a pulsation dampener (using a corrosion-resistant diaphragm to separate gas and liquid phases and smooth pipeline pulsation) on the pump discharge line. If upstream supply pressure also needs regulation, a pressure reducing valve can be added, with output field-adjustable from 1 to 9 bar. This combination systematically resolves pipeline pressure stability issues for metering pumps.