Mechanical saddle for sewer risers McAlpine BOSSCONN110-50-GR — universal 110/50 mm connection

Universal mechanical saddle McAlpine BOSSCONN110-50-GR creates a sealed connection from a 110 mm sewer riser to a 50 mm branch without removing or cutting out sections of the existing pipe. Designed for installation on vertical and slightly offset drainage stacks, this saddle provides a reliable tap-in point for branch pipes used in repairs, renovations and new sanitary installations. The unit is made for straightforward mechanical mounting and produces a watertight junction suitable for waste and soil pipe systems.

Advantages

The McAlpine mechanical saddle offers a secure, leak-resistant connection that eliminates the need for extensive pipe replacement. Its universal fit to 110 mm risers and integrated 50 mm outlet simplify retrofitting and new-work tasks. Installation requires only basic tooling and the clamp-style body ensures even pressure around the riser to maintain sealing performance. The design minimizes disruption to existing drainage by enabling a tap-in point without hot works or invasive cutting.

Suitable for

• Creating a 50 mm branch from an existing 110 mm soil or waste riser
• Bathroom and kitchen renovation where new branch connections are required
• Repairing or extending drainage stacks without replacing sections of pipe
• New installations where a compact tap-in solution is needed

Key specifications

• Primary connection diameter: designed for 110 mm risers
• Outlet diameter: 50 mm branch
• Type: mechanical saddle with clamp-style body
• Sealing: integrated gasket to provide a watertight joint
• Material characteristics: durable plastics and corrosion-resistant metal fastenings suitable for drainage environments
• Mounting: external clamping bolts for mechanical fixation

How to use

Position the saddle on the clean, dry section of the 110 mm riser where the branch is required. Ensure the outlet faces the intended direction for the 50 mm branch. Open the clamp and fit the saddle around the riser so the gasket aligns with the intended tap location. Tighten the clamping bolts incrementally and evenly until the saddle is securely fixed and the gasket is compressed to form a watertight seal. After mechanical fixation, cut the riser through the saddle outlet if required by the product design and insert the 50 mm branch pipe using appropriate solvent weld or push-fit connection methods as applicable.

Usage recommendations

Inspect the riser surface for damage or heavy deposits before fitting; replace seriously degraded pipe sections. Use appropriate tools to achieve even bolt torque and follow local plumbing codes for waste and soil systems. For permanent installations, confirm compatibility of the branch connection method (push-fit, solvent weld or mechanical join) with the materials of the 50 mm pipe being used.