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ValkCavityVision 1.0 | Maximum insulation with minimal investment

With one screen cloth, a grower can control the greenhouse climate and save energy costs. With two screen cloths, even better! The choice of a ‘double screen’ is therefore already frequently made.

In addition to the screen system with drive on the upper truss, an additional screen system with drive on the lower truss is then installed. For this, however, the greenhouse must be able to withstand the additional forces involved. The grower must also be able to afford this investment.

These conditions may be a reason to choose the ValkCavityVision 1.0 cavity screen installation, which consists of two screen cloths in one screen installation. This eliminates the need to purchase an additional screen profile and drive system, and the forces on the greenhouse structure remain the same. Moreover, the narrow space between the screen cloths (the cavity) provides extra insulation, saving even more energy.

To sum up: maximum possibilities with minimal investment!

✔ Lower energy costs ✔ Lower investment expenses ✔ No extra forces on the greenhouse frame

Unique system components Unique drive components

What makes the ValkCavityVision 1.0 unique?

ValkCavityVision 1.0 consists solely of unique components that match each other perfectly and are distinguished by their functionality, quality and ease of mounting thanks to our years of experience, in-house R&D and own factory. Together the components form an innovative and reliable screen system you can build on, now and in the future.

With the ValkCavityVision 1.0 screen system, the ValkScreenProfile from ValkScreenVision or ValkClip can be used.
In all types of ValkScreenProfile, the screen cloths are secured with the ValkScreenClip.

Both screen profiles are available in a range of standard lengths.

ValkScreenProfile ValkScreenVision:

  • Broad top provides strength and prevents 'blousing' of the screen.
  • Narrow bottom reduces the screen package and increases the light gain.
  • Unique design that is easy to stack.
  • Fitted with recesses above and below for simple mounting of ValkWireGuides.
  • Available in 22, 35 and 50 mm cross-section.
  • Prefab fitted with rubber seals for a perfect sealing.
  • Available in a range of standard lengths.

ValkScreenProfile ValkClip:

  • NB: is supplied without the rubber sealing strip, this will have to be inserted on site.
  • Lightweight profile due to optimal design with minimal wall thicknesses.
  • Available in 45 mm and 54 mm.
  • Suitable for plastic ValkWireGuides at the bottom and stainless steel ValkWireGuides on the top.
  • Available in a range of standard lengths
Take a look at the screen profile in action (video)

With the ValkCavityVision 1.0, both screen cloths are attached separately to the truss with a ValkTrussClip which ensures a very secure connection.

The double bent tab ensures that the polyester wire stays well centred. This means that it will not come into contact with sharp edges and provides double support for the polyester wires, so that they will last longer.

Better clamping force. Highly compact: only 26mm wide. Double, rounded ‘tabs’ at the bottom end prevent polyester wires from wearing.
Take a look at the ValkTrussClip in action (video)

The ValkWireGuide is available in various formats. The ValkScreenProfile from ValkScreenVision uses the plastic variety both on top and on the bottom. The ValkScreenProfile from ValkClip has a stainless steel variety on top and the plastic variety below. This ValkWireGuide ensures that the profile and the atlas wires can move independently, so the installation is not under tension during expansion and contraction.

Along with the standard ValkWireGuides, type ValkCavityVision 1.0 has an additional stainless steel ValkWireGuide added to the bottom that guides the 3rd polyester wire while carrying the screen along at the same time.

Compact design. Easy one-handed attachment 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.
Take a look at the ValkWireGuide in action (video)

The ValkScreenClip comes in various versions and secures the screen cloth to the ValkScreenProfile.

With the ValkScreenProfile ValkScreenVision, the screen is clamped in place in the profile’s cloth strip recess with the plastic ValkScreenClip.

With the ValkScreenProfile ValkClip, the screen is clamped in the profile with the stainless steel ValkScreenClip.

Along with the standard ValkScreenClips, the 2nd screen with the ValkCavityVision 1.0 variant is secured with a ValkScreenClip to the bottom of the profile.

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!

  • Type 2 (Pull wire)
  • Type 3 (Semi-push/pull)

Push/pull 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 push/pull tube and rack.
The push/pull tube moves to either side on a rack to open and close the screen cloth.

View drive type 1 (video fragment)

Unique ValkScreenDrive Type 1 components (Push/pull)

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.
Take a look at the ValkDriveTube in action (video)

The ValkTableClamp is the ideal connection between the ValkDriveTube and the ValkScreenProfile.

For the ValkCavityVision 1.0, this is mounted lower down with a ValkKliMax Extender.

Available in versions for a 27mm and 32mm tube. Extra strong bond thanks to hollow profile. Easy and solid installation with only one bolt. The Extender is available in various varieties.
Take a look at the ValkTableClamp in action (video)

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.
Take a look at the ValkRollerBracket in action (video)

The ValkRollerClamp links the ValkDriveTube and the ValkScreenProfile when unusual sizes of sections are used (non-standard sizes).

The ValkRollerClamp replaces the ValkTableClamp in those cases, to guarantee a perfectly closing screen even with this non-standard size.

Here, too, the ValkRollerClamp is mounted lower down with the ValkExtender.

Compatible with a 27mm and a 32mm tube.
View the adjusted ValkRollerClamp

Pull wire drive system

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. 

View drive type 2 (video fragment)

Unique ValkScreenDrive Type 2 components (Pull wire)

With the ValkCavityVision 1.0 screen system, the ValkKliMax Stability is mounted lowered with the ValkKliMax Extender.

The ValkKliMax makes a screen system maximally manageable and effective: whether opening and closing the screen fabric, or setting moisture gaps.

The ValkKliMax ensures a perfect seal in all situations, extremely even moisture gaps and the smallest possible fabric package.

The most powerful of its kind with 6 or 9 kg of resistance. Aligns screen profiles first for even moisture gaps or even heat dissipation. Guaranteed controlled forces on the greenhouse frame. Produces light gain with its compact construction. The ValkKliMax Stability is fitted with a stability shaft
Take a look at the ValkKliMax in action (video)
white spring (6 kg) - red spring (9 kg)
white spring (6 kg) - red spring (9 kg)
white spring (6 kg) - red spring (9 kg)
white spring (6 kg) - red spring (9 kg)
white spring (6 kg) - red spring (9 kg)
white spring (6 kg) - red spring (9 kg)

The ValkPulley supports the return wire of the draw cable (type 2) drive system, to prevent it sagging and allow the installation to continue functioning 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.
Take a look at the ValkPulley mounted on a ValkScreenProfile (YouTube) Take a look at the ValkPulley mounted on a ValkTrussClip (YouTube)

The ValkReversingWheel ensures that the stainless steel draw cable is guided back at the gable end and at a section divider.

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.
Take a look at the ValkReversingWheel in action (video)

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.
Take a look at the ValkDriveShaft in action (video)

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.
Take a look at the ValkWireTensioner in action (video)

The ValkBearingBracket guides the ValkDriveShaft  and can be mounted on the greenhouse frame in several 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. Optimised placement of the bearing(s) guarantees resistance to the forces of the ValkDriveShaft. Available with plastic sleeve bearing or with 8 ball bearings. Also available as a clamp version.
Take a look at the ValkBearingBracket in action (video)

Semi-push/pull 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 push/pull tube and steel pull wire.
Combines the benefits of a push/pull system with those of a pull wire system.

View drive type 3 (video fragment)

Unique ValkScreenDrive Type 3 components (Semi-push/pull)

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.
Take a look at the ValkDriveTube in action (video)

The ValkTableClamp is the ideal connection between the ValkDriveTube and the ValkScreenProfile.

For the ValkCavityVision 1.0, this is mounted lower down with a ValkKliMax Extender.

Available in versions for a 27mm and 32mm tube. Extra strong bond thanks to hollow profile. Easy and solid installation with only one bolt. The Extender is available in various varieties.
Take a look at the ValkTableClamp in action (video)

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.
Take a look at the ValkRollerBracket in action (video)

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.
Take a look at the ValkDriveShaft in action (video)

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.
Take a look at the ValkWireTensioner in action (video)

The ValkBearingBracket guides the ValkDriveShaft  and can be mounted on the greenhouse frame in several 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. Optimised placement of the bearing(s) guarantees resistance to the forces of the ValkDriveShaft. Available with plastic sleeve bearing or with 8 ball bearings. Also available as a clamp version.
Take a look at the ValkBearingBracket in action (video)

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.

Customer testimonial

‘Van der Valk Horti Systems has been our top screen material supplier for years. Innovative in the complete development, but also in individual products that considerably improve screen system service life and quality. Nice and expert people who take our perspective and think in terms of solutions.’
Huisman Screen Systems

Customer testimonial
 

‘ValkScreenVision is, in our view, the very best you can get in screen systems. With this system, we are able to guarantee the highest possible quality. Installation is quick, clean, and safe. A highly efficient retraction system.’
A1 Group

Customer testimonial
 

‘Thanks to the innovative essence and high-quality products of Van der Valk Horti Systems, we have been able to raise our game in providing our customers with the very best horticulture greenhouses.’
Maurice Kassenbouw

Customer testimonial

‘We promote the “Van der Valk” brand to our customers as a guarantee of the best quality. Van der Valk’s company structure also matches that of Horconex. This is one of the reasons why we have been working together so well for years (family business, customer-driven, innovative, and reliable).’
Horconex

Customer testimonial

‘For Van der Valk Systemen, being a good partner is in their DNA. An authentic company with great core values and people. Our collaboration with them since 1990 has been good all around, they are always at the forefront of what they do and aim for the best of the best in screen systems.’
SchermNed screening and insect mesh

Customer testimonial

‘We like working with Van der Valk Horti Systems.
They are committed to their product, they innovate, and they resolve any problems in no time.’
Luiten Greenhouses

Customer testimonial

‘The materials that Van der Valk Horti Systems supplies are of good quality. Deliveries are virtually always complete. In case of damage or when we need to act fast, it is very convenient that they have always numbered the parts ordered in advance. For us, they are a reliable partner to work with.’
Saarlucon Gewächshausbau

Customer testimonial

‘Dalsem builds and relies on Van der Valk Horti Systems. It is with good reason that we at Dalsem have been procuring our screen materials and ventilation mechanisms from Van der Valk Horti Systems to our full satisfaction for so many years.’
Dalsem

Customer testimonial

‘Van der Valk Horti Systems has been our top screen material supplier for years. Innovative in the complete development, but also in individual products that considerably improve screen system service life and quality. Nice and expert people who take our perspective and think in terms of solutions.’
Huisman Screen Systems

Customer testimonial
 

‘ValkScreenVision is, in our view, the very best you can get in screen systems. With this system, we are able to guarantee the highest possible quality. Installation is quick, clean, and safe. A highly efficient retraction system.’
A1 Group

ValkCavityVision 1.0 downloads

Download
Flyer ValkCavityVision 1.0
Brochure ValkScreenDrive
Download
ISO 14001 Certificate
Quality Certificate
HortiQ Certificate 2023

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