VIEGA adapter 15 mm to 3/4" (model 104771) for plumbing connections

VIEGA adapter 15 mm to 3/4" (model 104771) is a compact plumbing fitting that provides a transition between 15 mm metric pipe systems and 3/4" threaded fixtures. Manufactured by VIEGA to toleranced dimensions, the adapter is intended for use where a secure connection is required between copper, stainless or plastic 15 mm tubing and imperial-threaded valves, faucets, or appliances. The product is suitable for repair, retrofit, and new-installation situations in residential and light-commercial plumbing installations.

Advantages

The adapter offers a space-efficient connection that eliminates the need for multiple intermediate fittings when joining 15 mm pipework to 3/4" threaded components. Precision machining and material selection ensure consistent thread engagement and reliable sealing when used with appropriate sealing methods. Its compact design reduces potential stress points and simplifies alignment during installation, making it suitable for confined spaces and visible plumbing runs.

Suitable for

• Connecting 15 mm copper, stainless steel or plastic pipe to 3/4" threaded taps and valves
• Repairing or replacing fittings during bathroom or kitchen refurbishment
• Adapting metric supply lines to appliances or fixtures with imperial threads
• Use in residential and light-commercial water supply systems

Key specifications

• Connection A: 15 mm pipe interface compatible with standard 15 mm tubing
• Connection B: 3/4" external or internal threaded interface for fittings and fixtures
• Material: metal alloy suitable for potable water use (as specified by manufacturer)
• Design: compact inline adapter for minimal space requirement
• Typical temperature and pressure range: compatible with standard domestic plumbing systems (refer to system specifications)

How to use

Prepare the 15 mm pipe by cutting square and deburring the end. Attach the adapter to the 15 mm tubing using the recommended joining method for the pipe material (for example, compression, press-fit, or soldering if applicable) and ensure the joint is secure and leak-free. Thread the 3/4" side into the mating fixture using appropriate thread sealant or PTFE tape as required for the application. After assembly, pressurise the system and check all joints for leaks, tightening as necessary to achieve a watertight connection.

Usage recommendations

Use appropriate sealing materials for threaded connections and follow local plumbing codes. Select the correct joining method for the 15 mm pipe material and avoid over-tightening threads to prevent damage. If unsure about compatibility with specific pipe or fixture materials, consult VIEGA technical documentation or a qualified plumber.