Selecting an Injector - Mazzei® Injector Corp
Mazzei® Injectors are of very high quality and are engineered for exact performance. Selecting the right injector simply requires that you refer to the performance tables found in the resource section (click here) and follow the guidelines.
From your answers above, use the Mazzei Injector performance tables to select an injector model able to exceed your desired injection (suction) rate. The total water flow of the system must be equal to or greater than the injector's motive flow capacity (water through the injector).
1.Locate the injector inlet pressure on the performance
table which most closely corresponds to your maximum available
Remember, for the injector to operate properly, it must experience a higher inlet pressure than outlet pressure (called the differential pressure).
There are several installation methods available to ensure the injector operates properly.
Using a metering valve on the suction line can accurately control the suction rate. Viscosity and weight of material will affect the suction rate.
The water flow (motive flow) listed in the performance tables indicates the amount of water that the injector must be provided at a given pressure. Since the injector acts as a flow restrictor, this is the total amount of water that will pass through at this pressure.
The outlet pressure is dependent on restriction to flow in the system downstream of the injector. For example, if pressurized water is flowing through an injector and runs down a short pipe and simply falls on the ground, the outlet pressure (back-pressure) is nearly zero. Any restrictions downstream in the form of piping, filters, valves, sprinklers, emitters, etc. cause the outlet pressure (or back-pressure on the injector) to change.
Should you have any questions, our experienced technical support staff is ready to help. Contact us with your requirements and allow us to assist you in designing your injection system.