The ValkClip is made up of several unique components that are perfectly aligned with each other and stand out for their functionality, quality, and ease of installation thanks to our many years of experience, in-house R&D and proprietary factory. Together, these components form an innovative and reliable screen system you can build on, now and in the future.
ValkClip | The affordable choice among high-tech screen systems
The ValkClip system is a low-budget horizontal screen system.
This tried-and-tested system has more than proven itself over the past years and is a precursor of the next generation of screen profiles.
Simplicity comes first with the ValkClip system. The screen cloth for this system is fixed to the screen profile using stainless steel cloth clips. The affordable screen profile and accessories deliver outstanding functionality in situations where things such as installation time and light gains are not top priorities.
✔ Lightweight ✔ Strong ✔ Affordable choice among high-tech systems
What makes the ValkClip unique?
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The ValkScreenProfile VC is a strong screen profile that is available in various widths.
The screen cloth is fixed in place using stainless steel cloth clips. The polyester support wires are fixed in place using plastic ValkWireGuides and the polyester anti-billow ropes using stainless steel anti-billow rope guides.
Please note: the ValkScreenProfile VC is supplied without the rubber sealing strip, this will need to be pulled in on site.
Lightweight profile thanks to optimum design with minimum wall thicknesses. Available in 45mm and 54mm. Available in various standard lengths. Suitable for plastic wire guide at the bottom end and stainless steel wire guide at the top end.
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The ValkTrussClip VC has grown into the global standard and comes with a double tab that supports the polyester wires even better.
Better clamping force. Very compact: 26mm wide. Double, rounded ‘tabs’ at the bottom end prevent polyester wires from wearing.
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The ValkWireGuide VC makes sure that the profile and polyester wires can move independently from each other, so that no load is placed on the structure in case of expansion and shrinkage.
Compact design. Easy to attach in the upper and lower part of the ValkScreenProfile. Prevents wear of the ValkScreenProfile. Prevents light loss thanks to black stripes on the screen cloth.
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The ValkScreenClip VC is fixed to the edge of the profile and does not have to be changed when changing the screen cloth.
Provides ample cloth storage capacity. Minimum package size for maximum light gains.
ValkScreenDrive: The right screen drive system for any Venlo greenhouse
With three different drive types to choose from, you will always get the right system for your greenhouse!
Pull/push drive system
Suitable for any type of greenhouse
Racks required (to be purchased externally)
No load on greenhouse gables
How does it work?
Works using a pull/push tube and rack.
The pull/push tube moves to either side on a rack to open and close the screen cloth.
Unique ValkScreenDrive Type 1 components (Pull/push)
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The ValkDriveTube pulls and pushes the screen to open and close it.
Galvanised Contiflo tube, prevents white rust. Suitable for heavy duty (such as with darkening or shading cloth with opened ventilation windows) Available in two diameters: 27mm and 32 mm. Available in standard lengths. Easy to fix to any make rack. Reduced coupling with flange nut/flange bolt link.
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The ValkTableClamp is the ideal connection between the ValkDriveTube and the ValkScreenProfile.
Available in versions for a 27mm and 32mm tube. Extra strong bond thanks to hollow profile. Easy and solid installation with only one bolt.
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The ValkRollerBracket guides the ValkDriveTube.
Simple installation. Available both as a bolt version and as a clamp version. Use of patented plastic rollers. Freedom of movement of the rollers effortlessly absorbs expansion differences between steel truss and aluminium screen profile.
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The ValkRollerClamp fixes the ValkDriveTube to the ValkScreenProfile in case of deviating section sizes.
The ValkRollerClamp then replaces the ValkTableClamp to guarantee a perfectly closing screen cloth in this irregular section as well.Compatible with a 27mm and a 32mm tube.
Drive pull wire
More affordable
Drives large screen sections
Greenhouse must be able to withstand this system’s forces
How does it work?
Works using a stainless steel pull wire. This wire is wound around a steel drive shaft. A special tension bush ensures the wire is tensioned correctly for smooth functioning.
Unique ValkScreenDrive Type 2 components (Pull wire)
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The ValkKliMax raises screen system controllability and effectiveness to the maximum level, both when it comes to opening and closing the screen cloth and when it comes to regulating moisture gaps.
The ValkKliMax ensures perfect closure in all situations, extremely uniform moisture gaps, and the smallest possible cloth package.
The most powerful of its kind with 3, 6, or 9 kilos of resistance. First aligns screen profiles for uniform moisture gaps or even heat discharge. Guarantees controlled forces on the greenhouse structure. Delivers light gains thanks to compact structure. Various versions for maximum applicability.
green spring (3 kg) | white spring (6 kg) | red spring (9 kg)
green spring (3 kg) | white spring (6 kg) | red spring (9 kg)
green spring (3 kg) | white spring (6 kg) | red spring (9 kg)
green spring (3 kg) | white spring (6 kg) | red spring (9 kg)
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The ValkPulley supports the return wire of the pull wire drive (type 2), so that it cannot sag and the system will continue to run smoothly.
Fitted with a profile clip as standard. This clip always fits. Can be fixed to ValkScreenProfile (standard). Can be fixed to truss sleeve (optional). Can be opened, meaning that it can also be fixed to the return wire later. Can be opened, making it easy to remove or replace.
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The ValkReversingWheel makes sure the stainless steel pull wire is guided along the gable and returned at a section division.
Readily available, in single or double version. Pre-installed in aluminium casing with plastic wheels. Double bearings to be able to handle greater forces. Easy to mount on standard-size profiles. Available in 100mm and 130mm, compatible with 3mm cable. Prevents contact with ValkKliMax with narrow profile, without needing an extension plate. Prevents screen cloth wear through the positioning of the polyester wire compared to the pull wire. Mirrored version available (double wheel) as a solution for multiple screen systems.
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The ValkDriveShaft is located in the centre of the screen section. The shaft winds and unwinds the steel wire to open and close the screen.
The ValkDriveShaft is available in three versions:
x-reduced, o-reduced, smooth.X-reduced shaft: easy to couple using a bolt connection, without play and without welding! O-reduced shaft: easier to weld together than the smooth tube. Smooth tube: can be welded together.
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The ValkWireTensioner is used in combination with the ValkWireSleeve. The tensioner makes sure the stainless steel pull wires are always tensioned correctly for correct functioning of the ValkKliMax. The sleeve ensures the pull wire winds and unwinds neatly.
Suitable for installation on the 2” drive shaft. Steel cable attached on the inner side of the tensioner to prevent it from damaging the screen cloth. Design guarantees a firm bond and steady alignment on the ValkDriveShaft. Grooves on the ValkWireSleeve guide the pull wire. Holes on the ValkWireSleeve indicate when the right number of windings has been reached.
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The ValkBearingBracket takes care of guiding the ValkDriveShaft and can be mounted on the greenhouse structure in various ways.
Drastically simplified installation thanks to flap functionality. No more threading through, but laying of the ValkDriveShaft. Made from one single piece of aluminium to prevent warping. Prevents notching of the drive shaft. Available with plastic sleeve bearing or with 8 ball bearings. Also available as a clamp version.
Semi-pull/push drive system
Cost-effective and compatible with any type of greenhouse
Drives larger screen sections
Without a rack
No load on greenhouse gables
How does it work?
Works using the pull/push tube and steel pull wire.
Combines the benefits of a pull/push system with those of a pull wire system.
Unique ValkScreenDrive Type 3 components (Semi-Pull/push)
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The ValkDriveTube pulls and pushes the screen to open and close it.
Galvanised Contiflo tube, prevents white rust. Suitable for heavy duty (such as with darkening or shading cloth with opened ventilation windows) Available in two diameters: 27mm and 32 mm. Available in standard lengths. Easy to fix to any make rack. Reduced coupling with flange nut/flange bolt link.
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The ValkTableClamp is the ideal connection between the ValkDriveTube and the ValkScreenProfile.
Available in versions for a 27mm and 32mm tube. Extra strong bond thanks to hollow profile. Easy and solid installation with only one bolt.
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The ValkRollerBracket guides the ValkDriveTube.
Simple installation. Available both as a bolt version and as a clamp version. Use of patented plastic rollers. Freedom of movement of the rollers effortlessly absorbs expansion differences between steel truss and aluminium screen profile.
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The ValkDriveShaft is located in the centre of the drive system. The shaft winds and unwinds the steel wire to open and close the screen.
The ValkDriveShaft is available in three versions: x-reduced, o-reduced, smooth.
X-reduced shaft: easy to couple using a bolt connection, without play and without welding! O-reduced shaft: easier to weld together than the smooth tube. Smooth tube: can be welded together.
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The ValkWireTensioner is used in combination with the ValkWireSleeve. The tensioner makes sure the stainless steel pull wires are always tensioned correctly for correct functioning of the ValkKliMax. The sleeve ensures the pull wire winds and unwinds neatly.
Suitable for installation on the 2” drive shaft. Steel cable attached on the inner side of the tensioner to prevent it from damaging the screen cloth. Design guarantees a firm bond and steady alignment on the ValkDriveShaft. Grooves on the ValkWireSleeve guide the pull wire. Holes on the ValkWireSleeve indicate when the right number of windings has been reached.
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The ValkBearingBracket takes care of guiding the ValkDriveShaft and can be mounted on the greenhouse structure in various ways.
Drastically simplified installation thanks to flap functionality. No more threading through, but laying of the ValkDriveShaft. Made from one single piece of aluminium to prevent warping. Prevents notching of the drive shaft. Available with plastic sleeve bearing or with 8 ball bearings. Also available as a clamp version.
Read what our partners say about their experiences with our company and our systems.
We can, of course, tell you all about how great our product is, but we prefer to leave that to our partners, who have been using our systems for years.
ValkClip downloads
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Instruction video | ValkBearingBracketInstruction video | ValkPulley attached to truss clipInstruction video | ValkPulley attached to screen profileInstruction video | ValkKliMax SlideInstruction video | ValkKliMax Conventional
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Certificate ISO 14001