«Vent-L»

  • «Vent-L» is a simple but reliable device that does not require special skills to install in a greenhouse. 
  • For installing vent opener it's enough to find support on the profile of greenhouse in distance of 450-500 mm to the line hinges of the door or window, or set on the window or the door itself on mobile and stationary part. «Vent-L» can open your windows/doors at a temperature of 24 ° C (75 °F)which is the most favorable temperature for the growth of plants.The maximum value of the open window or door is 32 ° C (90 °F) , which is critical for some plants, such as tomatoes (tomato pollen is sterilized). Through setting opener, you can customize the time of opening without dismantling it.

  • HOW DOES IT WORK? The basis of the device is a cylinder (we use hydraulic cylinders manufacturing in Sweden, according to the results of operation (3 years), there was no failure of the warranty). The cylinder filled with a special fluid, which is developed by engineers of "ONIKS". It expands under the heat and pushes on the piston rod, which opens the door or window. When the temperature is low, the fluid compresses, the return spring returns the plunger and piston to its original position thereby closing the window or door in a greenhouse.

  • BENEFITS of the VENT-L to other similar devices: 
  • 1. «Vent-L» does not require electric power and operates exclusively on the temperature fluctuations of the greenhouse. 
  • 2. The automatic vent opener is located in the upper level of the greenhouse, it heats up faster, the plants at the lower levels are in conditions with lower temperatures. An opening temperature between 24-32 ° C (75-90 ° F) is better suited for most plant species. This is its uniqueness compared to other similar devices. 
  • 3. It can be fixed both for the opening doors and vents of greenhouses.
  •  4. Control of the starting of opening.
  •  5. Stem diameter of 8-10 mm and a metal piston is able to open the window up to 100 kg and can withstand enormous wind loads. 
  • 6. It does not require dismantling during winter.
  •  7. The service life of the vent opener for at least 5 years. 
  • 8. More than 10,000 times of opening/closing. 
  • 9. Easy disconnect from the vents or doors for opening and closing manually. 
  • 10. All the major fasteners are galvanized coating that protects them from corrosion in an environment of high humidity of greenhouse..
  • According to the results of 3 years of working in our test greenhouse, window leaves on the size 2 * 3 meters without removing during the winter period, and after testing on the stand of force closing-opening more than 5,000 times, Oniks-Ltd. decided to increase the guarantee to " Vent-L" up to 3 years!

Automatic Vent Opener Vent-L Opening Temperature 75-90°F of Greenhouse for Window/Doors

The automatic vent opener is located in the upper level of the greenhouse, it heats up faster, the plants at the lower levels are in conditions with lower temperatures. An opening temperature between 24-32 ° C (75-90 ° F) is better suited for most plant species. This is its uniqueness compared to other similar devices. It does not require dismantling during winter.All the major fasteners are galvanized coating that protects them from corrosion in an environment of high humidity of greenhouse. It can be fixed both for the opening doors and vents of greenhouses.Control of the starting of opening. More than 10,000 times of opening/closing. «Vent-L» does not require electric power and operates exclusively on the temperature fluctuations of the greenhouse. Stem diameter of 6-10 mm and a metal piston is able to open the window up to 30-100 kg (66-220lb) and can withstand enormous wind loads.Easy disconnect from the vents or doors for opening and closing manually.

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