3/4" Venturi Fertilizer Injector – 5–9 GPM – with Suction Hose & Rotameter

RKVI75 – 3/4" Venturi Fertilizer Injector, 5–9 GPM

The RKVI75 venturi fertilizer injector uses a pressure differential between the inlet and outlet to create suction that draws liquid fertilizer, acid, or other amendments into your irrigation flow. With no moving parts, it provides exceptional reliability with minimal maintenance. Includes suction hose and rotameter for monitoring injection rate.

Key Features & Benefits

• Includes suction hose and rotameter — ready to connect to your fertilizer tank with visual flow monitoring included
• No moving parts — nothing to wear out or rebuild; long-term reliability
• ~25% pressure differential required — needs approximately 25% pressure difference between inlet and outlet to initiate suction
• 5–9 GPM flow range — verify your system meets the minimum motive flow requirement for your operating pressure (see performance chart)

Sizing Your Injector

To ensure the venturi will operate on your system, you need to know your operating pressure and the flow required for your drip tape or sprinklers. The performance chart shows the motive flow required at each pressure to create suction. Your system must provide at least this much flow through the injector.

For a complete header manifold bypass assembly, see the 2" Manifold Kit w/ 3/4" Injector.

Spare Parts Available:

• Venturi Fertilizer Injectors