Products
FN-BV Proportional Mixing Valve
Automated blending of fresh water and recycled drainage by EC feedback
The FN-BV proportional mixing valve automatically blends fresh water with disinfected recycled drainage in real time, based on EC feedback. Connected after DISMART UV disinfection, it maintains target irrigation EC while maximising drainage reuse — reducing fresh water consumption and fertilizer costs in recirculating greenhouse systems.
our core strengths
Proven at Scale, Built for Performance
Farmnet manages the variables that determine crop consistency and operational efficiency. Systems are deployed across greenhouse, open-field, and indoor production environments, providing real-time control of temperature, humidity, CO₂, water delivery, and nutrient dosing.
Operating at national scale within the world's largest agricultural economy. Farmnet systems support dense networks of greenhouse and open-field operations across the highest-intensity production regions.
End-to-end production capability. Controllers, fertigation units, and system components are designed, produced, and validated within Farmnet's dedicated industrial facilities.
More than a decade of continuous development in agricultural control systems, refined through multiple technology generations and operational requirements.
Multidisciplinary engineering organisation focused on agricultural automation, control architecture, hardware design, and software systems.
Systems operating across diverse climates and production models—from arid environments to advanced controlled-environment agriculture.
Thousands of systems in continuous 24/7 operation, generating long-term performance data that informs system reliability and design.
Technical Specifications
- Control method
- Proportional / EC-feedback (continuous adjustment)
- Function
- Blends fresh water + disinfected recycled drainage
- Integration
- DISMART UV (upstream), FISMART fertigation (downstream)
- EC target
- User-configured; valve adjusts blend ratio in real time
- Benefit
- 30–50% reduction in fresh water and fertilizer use
Key Features
Proportional EC-based blending
Continuously adjusts the fresh/recycled water ratio to maintain the target EC at the fertigation inlet — no manual adjustment required.
Maximises drainage reuse
Blends the highest possible proportion of recycled water within the EC limit — minimising fresh water draw and fertilizer waste.
Works with DISMART UV
Installed after UV disinfection — operates on pathogen-free drainage, so blended water is safe for direct reuse in the crop.
Ecosystem
Works Together With
DISMART UV Disinfection
Receives disinfected drainage from DISMART UV as its recycled water source.
Learn MoreFertigation Systems
Blended water enters FISMART at the correct EC for accurate nutrient dosing.
Learn MoreApplications
Where It's Used
Closed-loop greenhouse recirculation
Substrate crop operations recycling drainage water to recover fertilizer costs and reduce fresh water consumption.
Water-scarce growing regions
Operations where fresh water cost or availability makes drainage recycling economically essential.
Next Step
Recover fertilizer. Reduce water use.
Tell us your drainage volume, fresh water EC, and target blending ratio. We'll design the right FN-BV configuration for your system.