3/4" Mazzei® venturi fertilizer injector — a differential pressure injector with internal mixing vanes that uses the venturi effect to draw liquid fertilizer, acid, or other amendments into your irrigation flow. No moving parts and no electrical connections required. Flow range 1.2–5.8 GPM. Polypropylene body is highly resistant to most acids and alkalis.
We'll notify you when the requested quantity is back in stock.
Ships Same Day
All orders placed by 12 PM local warehouse time will ship the same day. Some exclusions apply. Delivery time may increase if item isn't available in closest warehouse.
Mazzei® venturi injectors are differential pressure injectors with internal mixing vanes. The patented design and precision construction maximizes injector efficiency, suction capacity, and mixing capabilities. With no moving parts, maintenance is simplified and operating costs are significantly lower than pump-based injection systems.
Key Features & Benefits
No moving parts — nothing to wear out, rebuild, or maintain; exceptional long-term reliability
No electrical connections required — operates purely on water pressure differential; install anywhere without power access
Runs dry safely — no damage if the chemical supply runs out during operation
Chemical resistant polypropylene — highly resistant to most acids, alkalis, and fertigation solutions
Internal mixing vanes — create thorough mixing of injected chemicals into the water stream for uniform distribution
Safe operation — chemicals are injected under vacuum, not pressure, reducing risk of chemical spills
How a Mazzei Venturi Injector Works
When pressurized water enters the injector inlet, it is constricted toward the injection chamber and changes into a high-velocity jet stream. The increase in velocity through the injection chamber results in a decrease in absolute pressure, creating a vacuum that draws a liquid or gas additive through the suction port and mixes it thoroughly into the water stream. As the jet stream is diffused toward the injector outlet, its velocity is reduced and resumes its flow in a thoroughly mixed state.
Material
Body: Polypropylene
FAST & FREE SHIPPING
Free shipping on orders over $50. Orders before 12pm ship same day!