Retrofitting Flap Stays for Pelipal Kitchen Cabinets
A flap stay supports the front of a wall unit when opening upwards or downwards, holding it securely in the desired position using spring force or gas pressure.
When a kitchen or bathroom cabinet flap no longer stays up or drops uncontrollably upon closing, wear to the lever mechanism or pressure loss in the cylinder is usually the cause. Especially with intensively used furniture, these components must be replaced after several years. Anyone looking to fit new hardware requires components that serve as replacements for Pelipal or other established carcass systems. Brand name does not matter here; what matters are precise technical parameters such as the hole pattern, opening angle, and load capacity. This guide explains the technical criteria for compatibility and professional installation.
What to Consider for Compatibility?
To ensure a new fitting is suitable for Pelipal cabinets or comparable kitchen units, the mechanical ratings must be matched precisely to the existing timber or MDF front. A direct replacement requires checking the following technical specifications.
Force in Newtons (N)
The lifting force of a damper is always specified in Newtons. Typical ratings for standard wall cabinets range between 50 N and 150 N. For very large or solid fronts, versions with 250 N, 350 N, or more are required. The required force is calculated from the weight of the front including the handle, as well as the height of the flap. If the damper is too weak, the door will sag. If it is too strong, the cabinet can barely be closed. An incorrectly sized cylinder behaves like a lorry shock absorber in a small car – the mechanism becomes rigid and unworkable.
Hole Spacing and System 32
In professional furniture construction, System 32 dominates. This means that the vertical rows of holes in the carcass have a centre-to-centre distance of exactly 32 mm, and the first row of holes is usually located 37 mm from the front edge of the carcass. A compatible fitting uses precisely this hole pattern for the mounting plate. The diameter of pre-drilled holes is also standardised, typically measuring 3 mm or 5 mm.
Opening Angle and Mounting Type
Depending on the hinge type of the flap (usually a concealed hinge with a 35 mm cup diameter), the front opens at a specific angle, typically 90°, 100°, or 110°. The maximum stroke of the cylinder or cable stay must support this angle without subjecting the concealed hinges on the top panel to lever strain.
Suitable Alternatives for Wall Cabinets
When searching for a replacement part, there are different technical solutions available that vary in their design and function.
Gas Struts and Dampers
The gas strut is the standard for upward-opening fronts. A nitrogen-filled cylinder pushes a piston rod outwards. These components are maintenance-free and are usually clipped onto a cruciform mounting plate via a ball-joint fitting. They are ideally suited when you want to retrofit traditional flap stays that are precisely matched to the weight of the door.
For particularly large fronts, such as above a wide hob, a standard version is often insufficient. In these cases, gas dampers for heavy flaps must be installed. These feature a reinforced cylinder and solid metal mountings.
Mechanical Flap Stays and Cable Pulls
In addition to gas pressure, there are systems that operate with an integrated steel spring or a cable pull. A braked flap stay is frequently used for flaps that open downwards (drop-down drinks cabinet flaps). Here, the mechanism brakes the self-weight of the door so that it glides smoothly into the 90° position and hinges are not ripped out of the timber. Cable pull systems have the advantage of being very low-profile, taking up minimal space inside the cabinet.
Tip for kitchen renovation: When working on fronts and fittings anyway, it is often worthwhile looking at additional hardware. For example, if old kitchen furniture handles are replaced, the weight of the front changes slightly, which should be factored into the Newton calculation for the dampers. The interior of the carcass can also be upgraded at the same time with a dish draining rack for wall units, since the flap mechanism is mounted on the left and right side panels, leaving the centre of the unit free.
Installation and Retrofitting (Step-by-Step)
Installing or replacing a flap fitting is precise work. If the new parts are compatible with Pelipal drilling patterns, the existing screw holes can often be reused. For a completely new installation, measurements must be marked out precisely.
Required tools:
- Cordless screwdriver
- Bit size PZ2 (Pozidriv) or TX15 (Torx)
- Wood drill bit (3 mm or 5 mm)
- Folding rule and set square
1. Remove Old Fittings
First, secure the front. With gas struts, it is often enough to lift the small metal clip on the ball joint slightly using a flat-head screwdriver. The damper can then simply be pulled off. Next, unscrew the mounting plates from the carcass and the door.
2. Mark Out Dimensions
If new holes need to be drilled, follow the manufacturer mounting instructions. Fixing to the carcass is usually done in the 32 mm hole line. The position on the door is measured from the top edge. Important: The distance determines the resulting opening angle.
3. Screw on Mounting Plates
Use dedicated chipboard screws (typically 3.5 x 16 mm or 4 x 16 mm) for fixing into MDF or chipboard. For pre-drilled 5 mm holes, use Euro screws. Take care not to overtighten the screws, otherwise the material will strip.
4. Clip the Stay into Place
Press the new cylinder or lever mechanism onto the ball studs of the mounting plates until they audibly engage. Always install both sides before testing the operation.
5. Fine Adjustment
Some mechanical systems feature an adjustment screw that allows the spring tension or braking effect to be adjusted subsequently. Turn this screw in small increments until the flap stays open smoothly at any position.
If base units are also being adapted during modernisation, similar compatibility rules regarding the 32 mm grid apply to kitchen cabinet pull-outs. Precise replacement of the runners is straightforward here as well, provided the installation width and carcass depth are observed. A bespoke kitchen drawer organiser rounds off the functional upgrade of the furniture.
Frequently Asked Questions (FAQ)
How do I calculate the required force in Newtons for my cabinet flap? The rule of thumb is: the weight of the front (in kg) including the handle multiplied by 10 gives the approximate Newton requirement. For example, if the flap weighs 3.5 kg, you will need a holding force of around 35 N. Since dampers are usually installed on both sides, divide this value across them. In practice, the next higher standard size is often chosen (e.g. two dampers at 50 N or 60 N each), depending on the lever arm and cabinet height.
Can I use an upward-opening flap stay for downward opening? No. The mechanisms are fundamentally different. A fitting for upward-opening fronts actively pushes the door open and keeps it raised. A fitting for downward-opening flaps (drop-down flap stay) cushions the fall of the door and stops it at exactly 90° to relieve strain on the hinges.
Must I always install two gas struts per cabinet? Yes, for fronts with a width of approximately 400 mm or more, fitting on both sides is mandatory. If only one cylinder is installed on one side, the front will twist during closing, the gap margins will become uneven, and the concealed hinges will wear out very quickly on one side.