Conex reducing coupler 28 x 15 mm series 5000 – brass plumbing fitting

Conex reducing coupler 28 x 15 mm series 5000 is a brass plumbing fitting designed to join pipes of different diameters. Intended for potable water and heating systems, this reducing coupler provides a reliable mechanical connection between 28 mm and 15 mm pipework. The component is suitable for permanent installations in residential and commercial settings and is commonly used where a secure transition between larger distribution lines and smaller supply or appliance connections is required.

Advantages

The brass construction offers corrosion resistance and mechanical strength suitable for water and heating applications. The series 5000 design ensures consistent sealing and dimensional accuracy for straightforward installation and long-term performance. Compatibility with common plumbing pipes reduces the need for extra adaptors, simplifying inventory and repair operations.

Suitable for

• Potable water supply lines
• Domestic and commercial heating systems
• Radiator inlet and outlet connections
• Plumbing repair and retrofit work
• Transitions from main distribution pipe to fixture supply

Key specifications

• Material: brass
• Connection sizes: 28 mm to 15 mm
• Series: 5000
• Application: potable water and heating systems
• Suitable for use in residential and commercial installations

How to use

Prepare the pipe ends by ensuring they are cut square, deburred and clean. Insert the appropriate 28 mm and 15 mm pipes into each end of the coupler until they reach the designed stop, following the manufacturer’s guidance for insertion depth. Secure the joint by applying the recommended method for the specific system—this may include compression, push-fit, or soldering depending on the exact variant and installer practice. After assembly, pressurize the system and inspect the connection for leaks, making adjustments or re-seating as necessary to obtain a watertight joint.

Usage recommendations

Use with compatible pipe materials as specified for series 5000 fittings; verify system pressure and temperature limits before installation. For potable water applications, follow local plumbing codes and installation standards. When in doubt, consult technical documentation or a qualified installer to confirm correct installation method and suitability for the intended system.