Knee press 45? - PPSU, 50 x 50

Product detailed description

This 45° press elbow is commonly used in residential and commercial building projects for directional changes in heating and plumbing systems. Installers working with ALPEX piping systems will find this component essential for creating angled connections without the need for additional fittings. It ensures reliable performance in systems where space constraints require non-right-angle transitions.

Typical applications include underfloor heating circuits, domestic hot water lines, and central heating distribution systems. The elbow allows for flexible routing within walls and floors, ensuring a compact layout while maintaining hydraulic efficiency. The press connection method eliminates the need for soldering or threading, reducing installation time and risk of leaks.

Technical parameters

Material	Plastic PPSU
Operating temperature	+120 °C
Nominal pressure	PN 10
EAN	4013960368598
Weight	0.188 kg
Code	88450201
Brand	IVAR

The maximum operating temperature of +120 °C makes this fitting suitable for hot water and heating applications. The nominal pressure rating of PN 10 ensures compatibility with standard low-pressure systems. These parameters are essential for determining correct fitting size and material suitability in system design.

Installation and connection

To install the 45° press elbow, ensure the ends of the ALPEX pipes are clean and free from burrs. Slide the elbow onto the pipe until the pipe end reaches the stop inside the fitting. Position the stainless steel clamp over the joint and secure using a press tool according to the manufacturer’s instructions. After pressing, inspect the joint visually for proper alignment and uniform compression. Common installation errors include misalignment of the press tool, incorrect positioning of the clamp, or failure to verify the press depth. Always double-check the connection before commissioning the system.

Compatibility and accessories

This 45° press elbow is specifically designed for use with ALPEX pipes of the same diameter. It requires a compatible press tool and stainless steel clamps for secure installation. For complex systems, additional fittings such as straight couplings or other press elbows may be required. Ensure all components are from the same manufacturer to guarantee system integrity and compatibility.

Technical background for designers

The press connection relies on a mechanical deformation of the stainless steel clamp around the pipe and fitting, creating a tight seal. The PPSU material provides resistance to thermal stress and chemical corrosion, making it suitable for long-term use in hot water and heating environments. The EPDM sealing ring enhances the watertightness of the joint. System efficiency depends on correct press depth and alignment, as well as adherence to the recommended operating conditions. Longevity is influenced by the quality of installation and the stability of the surrounding environment.

Service and operation

Routine visual inspections should be conducted to check for signs of mechanical damage or discolouration, which may indicate overheating or wear. There are no scheduled service intervals specified for this component. In the event of a suspected leak, isolate the affected section and inspect the press joint for misalignment or damage. Repress or replace the fitting as necessary.

Frequently asked questions

Can this 45° press elbow be used with other types of plastic piping?
No, this fitting is specifically designed for ALPEX pipes. Using it with other pipe types may compromise the integrity of the connection.

Is it possible to reuse a pressed fitting after removal?
No, once the press tool has deformed the clamp, the fitting cannot be reused. A new elbow and clamp must be installed.

What is the minimum bend radius for this elbow?
The 45° angle of the elbow means it can be used in tight spaces without requiring excessive bending of the pipe. No additional radius calculations are necessary for standard installations.