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A Complete In-line Fertigation Control System for Soil-less Cultivation
Fertigal is a unique, simple and modular fertigation and irrigation control system for greenhouses based on direct, accurate injection of nutrients into the irrigation water pipe by a set of venturi type injectors, along with EC and pH control and irrigation control by one of the models of Elgal computerized controllers.
Fertigal system can be adapted to a wide range of water flow rates and pressure, typical for soil-less cultivation irrigation in greenhouses.
Most Elgal models used in Fertigal systems are also programmed for misting, drainage, filters' flushing and even climate control.
Fertigal produced in 5 sizes:
| Size (pipe diameter) |
Minimal flow rate M3/h (gph) |
Maximal flow rate M3/h (gph) |
Downstream pressure bar(psi) |
| 1” |
0.15 (40) |
6.5 (1,700) |
4 (60) |
| 2” |
1.0 (250) |
20 (5,300) |
4 (60) |
| 3” |
5.0 (1,300) |
35 (9,300) |
4 (60) |
| 4” |
15.0 (4,000) |
55 (15,000) |
5 (70) |
| 6” |
25 (6,600) |
250 (66,000) |
5 (70) |
Technical specifications
The Fertigal consists of the main following components:
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Hydrometer – 4 functions in one unit:
Water meter with magnetic pulse
Main irrigation valve + electric control
Adjustable pilot valve
Check (non return) valve |
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2 pressure switches: one for pump protection and the other for low pressure alerting via the controller. |
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An outlet for misting system, located before the main valve (not in all models). |
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A 3/4" service valve. |
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A pressure gauge with a 2 points selector. |
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PVC non corrosive pipes and fittings. |
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A set of Eldar Shany EC-pH3505 sensor including sampling cell, EC probe, pH probe and the interactive unique transmitter with the ability to perform soft calibration and alert when the probe is out of order. |
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Set of 350 L/h Venturi type fertilizer injectors according to requirement
Minimum number of injectors: 3
Maximum number of injectors: 8 |
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Flow indicators – an easy way to adjust and monitor each injector’s operation.
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An Accelerating stainless-still pump + electric operation board. |
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All the parts are installed in a compact stainless steel frame (140x80x120 cm.) which enables:
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An easy access to all of the system's parts for operation or service purpose. |
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Easy installation of additional components such as: more injectors, fertilizer meters, filters, Dagan system etc. |
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Transporting by any standard commercial vehicle. |
Optional accessories:
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A set of NC valves that cut-off fertilizer line when the irrigation is off.
Additional option: as fertilizer selector valves to enable multi types of fertilizer on the same injector set. |
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Fertilizer meters – an important add-ins for farther safety and preciseness. |
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Application program of Fertigal and other fertigation systems are almost the same. They are flexible and especially designed to meet all requirements of soil-less media irrigation and fertigation control.
The relevant controllers available are: Elgal 2000, Elgal 24 or Elgal 12
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