Screwed elbow 20x20 with fitting

Product detailed description

This screwed elbow is commonly used in residential and commercial buildings for connecting PEX-AL-PEX pipes in heating and water distribution systems. It is suitable for use in underfloor heating installations, radiator circuits and potable water supply systems. The elbow allows for directional changes in the pipe run without the need for crimping tools, making it a convenient alternative to crimped fittings in tight or hard-to-reach spaces. It is typically used by plumbers, heating engineers and installers working on low-pressure systems.

The elbow is designed for use with 20x2 mm PEX-AL-PEX pipe and is compatible with a range of PEX-based pipe systems. It is not suitable for gas applications and should only be used in water-based systems. The fitting is made from plated brass and includes two sealing rings to ensure leak-free connections. Installation is carried out using a standard wrench, making it a practical option for installations where crimping equipment is not available.

Technical parameters

The maximum continuous operating temperature of 95°C and pressure of 10 bar are important for determining the suitability of the fitting for specific applications. These parameters ensure the elbow can be used in standard heating and water systems without degradation over time. The recommended pipe size of 20x2 mm must be matched exactly to ensure a secure and leak-free connection. The presence of two sealing rings enhances the reliability of the joint.

Installation and connection

Installation involves inserting the prepared PEX-AL-PEX pipe into the elbow and tightening the fitting using a wrench. The pipe must be cut cleanly and deburred to avoid damaging the sealing rings. The elbow is threaded and requires a standard wrench for tightening. It is important to ensure that the pipe is fully inserted into the fitting before tightening to avoid misalignment or leaks. Common installation mistakes include over-tightening, which can damage the sealing rings, or under-tightening, which can lead to leaks. The fitting should be checked for leaks after installation and during system pressure testing.

Compatibility and accessories

This elbow is compatible with PEX-AL-PEX, PE-RT-AL-PE-RT and other PEX-based pipe systems. It is recommended to use with stainless steel manifolds for optimal performance. Additional components such as straight connectors or other elbows may be required for complete system assembly. A related product is the Screwed elbow 1/2x16 with external thread, which can be used for different pipe sizes and configurations. It is important to ensure that all fittings in the system are compatible with the same pipe type and size to maintain system integrity.

Technical background for designers

The elbow operates by creating a secure mechanical connection between the pipe and the fitting. The brass body provides durability and resistance to corrosion, while the EPDM sealing rings ensure a tight seal. The use of plated brass helps prevent galvanic corrosion when connected to other metal components. The elbow is designed for low-pressure systems and should not be used in high-pressure or high-temperature applications beyond its rated limits. The presence of two sealing rings increases the reliability of the connection and reduces the risk of leakage. The elbow is suitable for integration into heating and water systems where directional changes are required without the need for additional tools.

Service and operation

Regular inspection of the fitting for signs of wear, corrosion or leakage is recommended. The sealing rings should be checked for integrity and replaced if necessary. The fitting should be tightened to the manufacturer's specifications using a wrench. No specific service intervals are provided, but the fitting should be monitored for performance during routine system checks. If a leak is detected, the fitting should be replaced immediately to prevent further damage to the system.

Frequently asked questions

Can this elbow be used with PERT Frankische pipe?
Yes, it is compatible with PERT Frankische pipe as it is listed among the compatible pipe types.

Is it suitable for potable water systems?
Yes, it is suitable for potable water distribution as it is designed for use in water systems and includes EPDM sealing rings.

Can it be used in high-pressure systems?
No, it is rated for a maximum continuous pressure of 10 bar and should not be used in systems exceeding this limit.

Can it be used with stainless steel manifolds?
Yes, it is recommended to use with stainless steel manifolds for optimal performance and compatibility.

Documents for download

• Hygienically certified brass fittings for PEX-AL-PEX system (PDF)