Flap Stays Compatible with Nolte Kitchens

A flap stay or gas strut supports the upward-opening front of a wall unit and holds it securely in the open position. When the front panels of an existing kitchen sink down or no longer stay closed, replacing the damping elements is necessary.

When repairing wall units, the question of replacement part compatibility frequently arises. A defective fitting can easily be replaced with an alternative that is suitable for Nolte kitchens or other established brands, provided the technical specifications and hole patterns match. In this technical guide, you will discover what to look for when choosing and installing compatible flap fittings.

What to Look for Regarding Flap Fitting Compatibility

For a replacement part to integrate seamlessly into an existing cabinet, three essential technical parameters must be checked: the spring force, the installation dimensions, and the hole pattern.

The Spring Force in Newtons

The most important factor in the selection is the load capacity, which is specified in Newtons (N). The gas strut works like the shock absorber on a vehicle boot—if the pressure in the cylinder drops, the front drops down uncontrollably. The required force depends on the weight and height of the flap. Common values for kitchen wall cabinets range from 150 N to 450 N. When ordering replacement parts suitable for Nolte, check the print on the old cylinder. If, for example, '250N' is stamped there, the replacement part must feature the exact same value.

Hole Pattern and System 32

In professional cabinet making, carcase parts are generally manufactured according to System 32. This means that the vertical line hole drillings have a distance of exactly 32 mm between them, and the diameter of the drilling is 5 mm. Compatible replacement fittings utilise precisely this grid for the mounting plates. If the old fitting was secured using Euro screws in the line drillings, the new module can often be screwed into the same positions.

Opening Angle and Type of Overlay

Depending on the construction of the wall unit, the flap opens at a specific angle, typically 75°, 90°, or 110°. Furthermore, a distinction must be made between whether the front is installed as a full overlay (sitting over the cabinet sides) or as an inset (sitting flush within the frame). This influences the positioning of the mounting brackets on the inside of the carcase.

Suitable Replacement Parts for Wall Units

When selecting fitting technology, a fundamental distinction is made between mechanical stays and gas-assisted systems.

Mechanical Flap Stays

For light fronts or flaps that open downwards (for example, in drinks cabinets), mechanical flap stays are used. These often feature an adjustable braking effect. Using an Allen key on the joint, the friction resistance can be precisely adjusted so that the flap stays in any desired position.

Gas Struts for Heavy Fronts

If the front is made of solid wood, thick MDF, or fitted with glass inserts, simple mechanics are not enough. Here, gas struts for heavy flaps are required. These cylinders actively push the front upwards when opening and gently cushion the movement. Important: a gas strut must not be confused with a furniture damper (soft-close buffer). The latter merely cushions the closing of a door, whereas the gas strut supports the entire weight of the front.

Accessories in the Wall Unit

When wall units are serviced, it often provides an opportunity to functionally upgrade the interior. A plate rack for wall cabinets is a space-saving solution that is integrated directly into the cabinet above the sink and drains residual moisture from crockery. After installing new fittings, kitchen furniture handles should also be checked for a secure fit, as the altered opening action changes the tensile load on the screws.

Installation and Retrofitting: Replacing Defective Struts

Replacing a defective flap fitting is a precise but straightforward installation task.

Required Tools

• Cordless screwdriver or hand screwdriver with bits for PZ (Pozidriv) or TX (Torx)
• Folding rule and pencil
• If necessary, a bradawl or wood drill bit (Ø 3 mm) if repositioning

Step-by-Step Installation

1. Dismantling the old cylinders: On most gas struts, the cylinder head is simply clipped onto a ball stud. Using a flat screwdriver, the small metal spring clip on the head can be lifted slightly, allowing the cylinder to be pulled off.
2. Checking the mounting plates: Measure the hole spacing of the screwed-on round or oval mounting plates. If this matches the new fitting (often 32 mm), the old plates can remain in the cabinet.
3. Fitting the new fixings: If the plates need to be replaced, loosen the chipboard screws. Position the new plates exactly according to the manufacturer's measurements. The dimensions (e.g. 250 mm from the cabinet edge) must be maintained down to the millimetre, otherwise the kinematics of the flap will jam.
4. Clipping in the new strut: The new cylinder is simply pressed onto the ball studs of the mounting plates until it audibly clicks into place. Ensure that the thicker part of the cylinder (the body) generally points upwards to ensure lubrication of the seals.

Those wishing to bring not only the wall units but also the base units up to date with the latest technical standards during a kitchen renovation will find compatible kitchen cabinet pull-outs in our range. An upgrade is particularly worthwhile in wide units, for instance with a pull-out kitchen bin 60cm that seamlessly integrates into existing carcases.

Frequently Asked Questions (FAQ)

Can I replace a 200 N strut with a 250 N strut? Changing the force rating is only recommended to a limited extent. If the Newton rating is too high, the flap can only be closed with considerable effort and will slam upwards unchecked when opened, which can damage the hinges (the concealed hinge). If it is too low, the flap will not stay open. Ideally, stick to the original specification.

Do the fittings suit every hinge? Flap stays work independently of the hinges that hold the flap to the top panel. However, it is important that the hinges themselves are intact. If you are looking for replacements for Nolte hinges, look out for the cup diameter of usually 35 mm and the correct overlay type.

Why does my flap not close flush after replacement? If the front stands out slightly after replacing the gas strut, the mounting points on the cabinet or the front are not exact. A deviation of just 2 mm can result in the cylinder reaching the end of its stroke before the door touches the carcase. Check the installation dimensions against the technical drawing of the new fitting.