VIEGA reducing tee 18 x 22 x 18 mm, model 322694

The VIEGA reducing tee 18 x 22 x 18 mm, model 322694, is a compact pipe fitting designed to create a branch with a larger central run while maintaining smaller inlet and outlet connections. Intended for plumbing and heating systems, this reducing tee provides a controlled transition between pipe diameters and a stable junction point for fluid distribution in closed systems.

Advantages

This reducing tee offers a compact footprint and reliable mechanical connection suitable for confined installation spaces. The stepped diameter design allows straightforward integration between 18 mm and 22 mm lines, reducing the need for multiple adapters. Constructed to meet typical plumbing and heating application requirements, it minimizes potential leaks when installed according to manufacturer guidelines and compatible system standards.

Suitable for

• Domestic and commercial plumbing supply lines
• Hydronic heating systems and radiators
• Pipe distribution and branch connections in compact installations
• Retrofit projects where a change of pipe diameter is required

Key specifications

• Connection layout: tee with a reduced central branch
• End diameters: two branches at 18 mm and a central branch at 22 mm
• Application: potable water and heating circuit connections (where system materials and standards permit)
• Form factor: compact, radial three-way fitting

How to use

Install the reducing tee inline where a transition from 18 mm to 22 mm pipework is required. Ensure pipe ends are clean, deburred and compatible with the fitting material and joining method used in the system (e.g., press, soldering, or push-fit as applicable). Position the fitting so flow direction and branch orientation meet the hydraulic design. Follow standard installation practice and applicable plumbing codes, performing pressure tests after installation to verify joint integrity.

Usage recommendations

Confirm compatibility of pipe material, joining method and system pressure with the reducing tee prior to installation. Use only approved tools and follow manufacturer instructions for joining and testing to ensure leak-free operation and long-term performance.