Press-fit coupling Perfexim 733, fittings 20 x 16 mm (62-733-2016-000)

Perfexim press-fit coupling model 733 is a plumbing fitting designed to join a 20 mm pipe to a 16 mm pipe using a crimp/press connection. The fitting creates a permanent mechanical seal suitable for potable water and heating systems without the need for soldering. Its compact form factor allows use in confined spaces and supports transitions between different pipe diameters while maintaining a leak-resistant connection.

Advantages

The press-fit design provides a secure, cold connection that reduces installation time compared with soldered joints. A consistent mechanical seal minimizes the risk of leaks and eliminates the need for open flame or additional sealing compounds. The coupling’s durable construction is compatible with common plumbing materials and supports potable water applications as well as heating circuits where a reliable diameter transition is required.

Suitable for

• Domestic potable water supply lines
• Residential and small commercial heating circuits
• Transitions between 20 mm and 16 mm pipe runs
• Repairs and retrofits in confined spaces

Key specifications

• Connection type: press/crimp joint
• Compatible pipe diameters: 20 mm to 16 mm
• Intended media: potable water and heating fluids
• Installation method: cold press using appropriate pressing tool and jaws
• Form factor: compact coupling for tight spaces

How to use

Ensure pipes are cut squarely, deburred and cleaned before assembly. Insert the 20 mm and 16 mm pipes fully into their respective ends of the coupling according to reach marks if present. Use the recommended press tool and compatible jaw for the fitting material to make a single, complete press at the designated location. After pressing, visually inspect the joint for correct alignment and full compression. Follow local codes and manufacturer guidance for pressure testing and system commissioning.

Usage recommendations

Use only press tools and jaws approved for the fitting material and size. Verify pipe compatibility and follow water system regulations for potable installations. Avoid reheating or modifying the coupling after pressing; replace any damaged fittings.