1-1/2

1-1/2" Mazzei Venturi Fertilizer Injector – 10.7–48 GPM, Polypropylene

Suction Line Kit for 1/2

Suction Line Kit for 1/2" and 3/4" Venturi Fertilizer Injectors

2" Mazzei Venturi Fertilizer Injector – 32.4–159 GPM, Polypropylene

$100.07

2" 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 32.4–159 GPM. Polypropylene body is highly resistant to most acids and alkalis.

Connection2" MNPT
Flow Range32.4–159 GPM
Body MaterialPolypropylene
Moving PartsNone
Availability: In stock
SKU
2081-A-PP
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.
Delivery time: 2-4 business days

2081-A-PP – 2" Mazzei® Venturi Fertilizer Injector, 32.4–159 GPM

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

Mazzei venturi injector operation diagram showing flow path and suction

2081-A-PP Mazzei venturi injector dimensional drawing

Operating Pressure (PSI) Water Suction
Injector INLET Injector OUTLET Motive Flow (GPM) Water Suction (GPH)
5 0 32.4 629
1 629
2 629
3 214
4 135
10 0 45.8 629
2 629
5 467
7 149
8 30.0
15 0 56.2 630
5 623
7 576
10 213
12 76
20 0 64.8 630
5 630
10 468
12 298
15 151
25 0 72.5 630
5 630
10 626
15 404
20 134
30 0 79.4 630
5 630
10 630
15 511
20 341
25 61.7
35 0 85.8 630
5 630
10 630
15 626
20 459
25 255
30 -
40 0 91.7 630
5 630
10 630
15 630
20 523
25 394
30 168
35 -
45 0 97.3 630
5 630
10 630
15 630
20 606
25 507
30 341
35 148
40 -
50 0 102 630
5 630
10 630
15 630
20 630
25 587
30 452
35 299
40 115
60 0 112 630
5 630
10 630
15 630
20 630
30 600
35 508
40 380
45 216
70 0 121 630
5 630
10 630
15 630
20 630
30 630
40 528
45 440
50 326
55 142
80 0 130 630
5 630
10 630
15 630
20 630
30 630
40 604
50 505
60 269
65 60.7
90 0 138 630
5 630
10 630
20 630
30 630
40 630
50 601
60 458
70 179
75 -
100 0 145 630
5 630
10 630
20 630
30 630
40 630
50 621
60 593
70 412
80 120
120 0 159 630
5 630
10 630
20 630
30 630
40 630
50 630
60 612
70 595
80 523
90 309
100 -