Eductors can be used for dosing and mixing of chemicals or other fluids. By using an eductor you can pump and mix in the same process which is inherently more efficient and in many cases less expensive than using separate dosing pumps and static mixers.
In most cases the eductor design will be sufficient to ensure the correct dosing / mixing rate. However dependent on the application, and if a very small suction flowrate is required, then a valve can be installed to precisely control the suction flow
Applications for mixing and dosing are predominantly in the water treatment industries but there is a large requirement for offshore and marine applications to correctly dose chemical suppressant in fire fighting systems.