Mazzei Air Injectors (selection and installation)

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Fig 3

The injector is installed on the mainline and the pressure reducing device is on the bypass. Chemical

injection can be turned on when the control valve is closed. When the valve is open, injection stops

due to reduced pressure differential. (See Fig.3)

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Fig 3 The injector is installed on the mainline and the pressure reducing device is on the bypass. Chemical injection can be turned on when the control valve is closed. When the valve is open, injection stops due to reduced pressure differential. (See Fig.3)

Fig 4 The injector is installed on a bypass with a booster pump. When mainline pressure cannot be reduced, a small booster pump can be used to create sufficient differential pressure to operate the injector.(See Fig.4) Fig 5 The injector is installed in the mainline. The injector must see a sufficient differential to operate. In other words, the inlet pressure must be sufficiently greater than the outlet pressure.

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Page 3: Typical Installation Methods Fig 1

Mazzei Air Injectors (selection and installation)

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