Vent opener replacment cylinders (pistons/pumps)

Common for all standard greenhouse vent openers manufactured by Orbesen Teknik is the thermo hydraulic cylinder, which opens and closes the arms of the opener. That cylinder is UNIVERSAL (=identical) for all the openers, and can be identified by our name + year of manufacturing stamped into the black part of the cylinder tube. More information can be found in the datasheet.

For other purposes?
For Nova-Air : See separate page
Heavy duty lifters : See special orders / THERMACT
Extremely strong opener : See Gigavent

Cylinder wax type	Tube length	Can be set start opening between	Fully open at	Start closing at	Fully closed at
Standard	200 mm	17-25°C / 63-77°F	30-32°C / 86-90°F	31°C / 88°F	13°C / 55°F
D	200 mm	9-11°C / 48-52°F	12-15°C / 54-46°F	10-8°C / 50-46°F	7-6°C / 45-43°F
E E5D E10D E15D	200 mm 200 mm 200 mm 200 mm	24-27°C / 71-75°F 21-24°C / 68-75°F 16-21°C / 59-70°F 15-20°C / 57-70°F	28-30°C / 81-84°F 26-30°C / 79-81°F 25-30°C / 73-75°F 23-24°C / 73-75°F	27-25°C / 81-75°F 24-23°C / 75-73°F 22-21°C / 72-70°F 21-20°C / 70-68°F	24-22°C / 75-72°F 22-19°C / 22-66°F 19-13°C / 66-55°F 18-12°C / 64-54°F
F F10D F20D	200 mm 200 mm 200 mm	41-42°C / 106-110°F 29-36°C / 83-97°F 21-30°C / 67-88°F	43-50°C / 109-111°F 39-44°C / 100-102°F 38-43°C / 95-99°F	43-41°C / 109-106°F 38-37°C / 100-99°F 37-34°C / 99-93°F	39-38°C / 102-100°F 33-24°C / 91-75°F 18-15°C / 64-59°F