Typical Injector Installation Methods

Six typical installations are shown below. Our engineering staff can assist with product selection and application.

Bypass Installation Around Ball Valve
Bypass Installation Around Pressure Regulator Valve

The injector is installed around a point of restriction such as a regulator valve or a gate/ball valve to create a differential pressure across the injector. This allows the injector to produce a vacuum and draw in material.
(See Fig.1 and Fig.2)

Installation with Chemical Control Valve

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)

Bypass Installation with Booster Pump

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)

Installation Across an Existing Supply Pump

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. (See Fig.5)

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