Plasson Reducing Tee 
The Plasson Reducing Tee is a precision engineered barrier pipe fitting designed to connect three sections of water mains pipe while branching off into a smaller supply line, all in a single, reliable junction. It allows a 63mm main water line to continue straight through while splitting off into a 32mm branch line at a 90° angle, making it the go-to solution for tapping into a primary water main to feed an individual property or building meter on new housing and commercial developments.

Where this fitting truly earns its place is in contaminated ground conditions. On brownfield sites, industrial redevelopments, and landfill zones, standard MDPE pipelines present a serious risk: harmful hydrocarbons and soil contaminants can permeate the pipe wall and compromise the drinking water supply. The Plasson Reducing Tee is specifically engineered to connect barrier pipes, which feature an internal aluminium layer that blocks contaminant ingress, while ensuring that aluminium layer never comes into direct contact with the potable water inside. The result is a safe, uncompromised drinking water supply, even in the most challenging ground environments.

Built to handle operational pressures of up to 16 bar, this fitting is fully compliant with UK Water Reg 4, BS8588 (the standard for water pipes in contaminated land), and BS6920 for drinking water safety. For civil engineers, groundworkers, and water infrastructure contractors who need a fitting they can trust in high-stakes conditions, the Plasson Reducing Tee delivers the performance and regulatory compliance the job demands.

Summary: 

• Used to connect three sections of water mains barrier pipe while safely branching off a smaller line
• Allows a larger 63mm main water line to continue straight through while splitting off into a smaller 32mm branch line at a 90° angle
• Its primary function is to safely transport drinking (potable) water through brownfield sites, industrial redevelopments, or landfill zones where the soil contains hydrocarbons or harmful chemicals
• Connects specialised barrier pipes (which feature an internal aluminium protective layer) and is specifically engineered to ensure no contact between the aluminium layer and the drinking water
• Fully compliant with UK Water Reg 4, BS8588 (the standard for water pipes in contaminated land), and BS6920 for drinking water safety