
INBAR
Non-Drain pressure-compensating emitter — irrigation starts uniformly across the entire lateral.
- Non-Drain
- PC
- 120 mesh+
INBAR is an in-line pressure-compensating (PC) Non-Drain drip emitter. The Non-Drain structure prevents the lateral from draining when irrigation stops, so the next cycle starts simultaneously and at uniform flow across the full lateral. This eliminates the chronic problem of plants at the lateral end receiving water late or insufficiently in sloped terrain. Terra-Zenith supplies INBAR as the Geoflow Türkiye authorised distributor for Türkiye and regional markets.
Flow-rate options: 0.8, 1.2, 1.6, 2.1, 3.4 L/h. Tube diameters: 16, 17, 20, 22, 25 mm. Wall thickness: 0.4–1.2 mm. Shutdown pressure: 1.4 m. Minimum 120 mesh filtration required.
What problem does Non-Drain solve?
With standard emitters, opening the valve starts dripping at the head of the lateral first; water takes seconds-to-minutes to reach the far end. Closing the valve drains the line — the far end keeps dripping after shutoff. On sloped terrain this produces uneven distribution: plants at the lateral end chronically receive less water.
INBAR's Non-Drain mechanism keeps the lateral filled. The moment the valve opens, every emitter drips at the same rate; the moment it closes, dripping stops instantly. This materially improves the efficiency of short-duration high-frequency programs (greenhouse, fertigation).

Technical Specifications
Non-Drain pressure-compensating emitter — irrigation starts uniformly across the entire lateral.
| Emitter flow rate | 0.8 / 1.2 / 1.6 / 2.1 / 3.4 L/h |
|---|---|
| Pipe diameter | 16 / 17 / 20 / 22 / 25 mm |
| Wall thickness | 0.4 – 1.2 mm |
| Shutdown pressure | 1.4 m |
What applications is INBAR suited for?
Greenhouses: especially soilless culture and tomato, cucumber, pepper, lettuce operations with 10+ short-duration cycles per day. In row crops and vegetable farming, Non-Drain is critical on sloped fields for uniform water distribution. In orchards it suits small-dose high-frequency fertigation programs.

"Non-Drain pressure-compensating emitter — irrigation starts uniformly across the entire lateral."
Application Areas
Non-Drain pressure-compensating emitter — irrigation starts uniformly across the entire lateral.

Frequently Asked Questions
Are Non-Drain and anti-siphon the same?
No. Anti-siphon prevents post-irrigation vacuum from pulling soil into the emitter (ASSIF, VERED). Non-Drain prevents the lateral from draining (INBAR). Different mechanical problems, different solutions.
What does 1.4 m shutdown pressure mean?
Below 1.4 m water-column pressure the Non-Drain mechanism closes and stops dripping. This prevents water inside the lateral from draining out.
What filtration is required?
120 mesh minimum disk or sand filter. Critical to preserve the PC mechanism and Non-Drain valve performance over years of service.
Does INBAR work subsurface?
Yes — but for subsurface use, anti-siphon emitters like ASSIF or GEOFLOW are typically preferred. INBAR's main advantage shows in greenhouse and sloped surface installations.
Is product-selection consulting available?
Yes. Terra-Zenith advises on INBAR vs alternative emitters based on greenhouse type, crop, irrigation frequency, and field slope.
INBAR is the Non-Drain pressure-compensating emitter series of Geoflow Türkiye. Terra-Zenith is the Geoflow Türkiye authorised distributor for Türkiye and regional markets, providing product-selection consulting and supply. terra-zenith.ru
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