Crimp Tee fitting SiGMA-Li MT25 for 25×25×25 mm copper/aluminium pipes

Crimp tee fitting SiGMA-Li MT25 for 25×25×25 mm copper/aluminium pipes is a three-way press connection intended for branching or joining pipe sections in plumbing and HVAC installations. The fitting is designed for use with press tools to form a permanent, leak-resistant joint compatible with common metal pipes such as copper and aluminium. It is applicable in potable water systems, heating circuits and chilled-water installations where press fittings are specified.

Advantages

The press-style tee provides a reliable mechanical connection without the need for soldering, reducing installation time and eliminating the use of open flames. Constructed for compatibility with both copper and aluminium pipe materials, the fitting ensures consistent sealing when used with the appropriate pressing tool and inserts. Its three-way layout allows straightforward branching of pipe runs while maintaining flow characteristics and system integrity.

Suitable for

• Domestic and commercial potable water distribution
• Central heating systems and radiators
• Chilled-water circuits and cooling systems
• Plumbing installations requiring secure, flame-free joints
• Retrofit and new-build pipe networks using 25×25×25 mm metal pipes

Key specifications

• Connection type: three-way press (tee) for crimp/press installation
• Pipe compatibility: copper and aluminium pipes with 25 mm outer dimension
• Joint method: press/crimp forming a permanent, leak-resistant seal when pressed
• Application media: potable water, heating water, chilled water
• Typical use temperature range: suitable for heating and chilled-water circuits (follow system specifications)

How to use

Select compatible 25×25×25 mm copper or aluminium pipe and ensure pipe ends are cut square, deburred and clean. Insert the appropriate sealing element or insert if required by the press system, position the tee on the pipe end and operate the compatible press tool according to the tool manufacturer’s instructions. Verify each pressed joint visually and, where applicable, by pressure testing the installation in line with applicable standards and local codes.

Usage recommendations

Use only press tools and jaws approved for the press fitting system and material type. Confirm compatibility with pipe wall thickness and the selected press system inserts. After installation, conduct pressure and leak tests as required by regulations; avoid using fittings on unknown or incompatible pipe materials.