Complete 3" manifold kit with 2" venturi injector — everything needed to add fertigation to a 3" mainline. Installs with supplied 3" NPT flanges (1/2" bolts sourced locally). Includes the header manifold, 2" venturi injector, bypass assembly, and throttle valve. Verify your system meets the minimum flow requirements for your operating pressure before ordering.
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RKMANIFOLD-3 – 3" Manifold Kit with 2" Venturi Injector
Complete parts for a 3" header manifold assembly with 2" venturi injector. Installs onto a 3" mainline with the supplied 3" NPT flanges. Requires 1/2" bolts sourced locally.
Before You Order
Make sure your system meets the minimum flow requirements for your operating pressure. For example, if your system operates at 50 PSI, you need at least 9 GPM of flow through the injector for suction to work. This is based on the flow needed for your sprinklers or emitters, not your pump capacity.
How to Use
Open the ball valve on the 2" bypass assembly
Slowly close the main center throttle valve to divert flow through the injector
Close the throttle until you see the desired pressure differential on your gauges
The injector will begin drawing fertilizer through the suction port
Key Features
Complete kit — includes manifold, injector, bypass, and throttle valve
3" NPT flanges supplied — installs on standard 3" mainline
2" venturi injector — sized for higher flow commercial systems