21.5mm Overflow Tee 90° – uPVC Plumbing Fitting

The 21.5mm overflow tee at a 90° angle is an essential fitting for overflow pipework systems, allowing three lengths of 21.5mm diameter pipe to be joined together in a right-angled configuration. This fitting is commonly used in overflow applications such as cold-water storage tanks, cistern outlets and boiler overflow systems where reliable routing of excess water is required.

Manufactured from robust uPVC, the overflow tee provides a secure and long-lasting connection that resists corrosion and ageing. Depending on installation preference, it can be solvent-welded for a permanent join or push-fit where compatible, simplifying plumbing layouts and maintenance.

Key Features & Benefits

• Designed for use with 21.5mm overflow pipework
• Three-way connection at a 90° angle
• uPVC construction for durability and moisture resistance
• Compact profile suits tight or confined spaces
• Compatible with solvent-weld or push-fit systems where appropriate
• Ideal for cistern, boiler and tank overflow installations

Installer Benefits

• Lightweight for easy handling during fitting
• Can be cut and adjusted on site with standard tools
• Quick to join using compatible solvent or push-fit methods
• Consistent dimensions for accurate piping layouts
• Minimal maintenance once installed

Performance & Durability

This overflow tee is built to perform reliably in typical plumbing environments. The uPVC material resists moisture, temperature variation and general wear, helping provide a dependable connection within overflow systems.

By connecting three lengths of overflow pipe at a right angle, this fitting helps ensure excess water is routed away efficiently and safely, reducing the risk of spills or overflow issues when installed correctly.

Installation

Install the tee by preparing the ends of the overflow pipes to match your chosen jointing method (solvent-weld or push-fit). For solvent-weld systems, apply the recommended PVC adhesive to the pipe ends and fitting sockets before joining. When using push-fit compatible products, simply insert the pipe ends into the fitting until secure. Ensure all connections are aligned to prevent misalignment in the overall system.

Product Specifications

• Material: uPVC (plastic) fitting
• Diameter: 21.5mm
• Angle: 90°
• Colour: White
• Application: Overflow pipework fitting
• Compatibility: Standard overflow systems