Aquaflow Kast Iron 112mm Adaptor

4‑inch Clay Iron to Plastic Adaptor

The 4‑inch clay iron to plastic adaptor provides a reliable solution for connecting older clay or cast iron drainage pipework to modern plastic underground drain systems. It allows you to transition between materials while maintaining a secure and leak‑resistant joint, making it ideal for renovations, repairs and upgrades.

Designed with a flexible rubber body and strong clamping bands, this adaptor compensates for slight differences in pipe diameter and surface texture. This helps ensure a tight seal even in challenging underground environments, while the lightweight design makes installation straightforward.

Clay Iron to Plastic Adaptor – Key Features & Benefits

• Connects 4″ clay or cast iron pipes to modern plastic drainage (110mm)
• Flexible rubber construction with stainless steel clamp bands for security
• Durable design suited to underground drainage use
• Provides a watertight joint between different materials
• Helps prevent leaks at challenging transitions
• Suitable for domestic and commercial drainage systems

Installer Benefits

• Flexible coupling absorbs slight misalignment between pipe ends
• Quick and secure installation with minimal additional tools
• Reduces labour time compared to rigid couplings
• Lightweight design makes handling easier on site
• Low maintenance once installed

Applications

• Connecting old clay drainage to new plastic pipework
• Transitional joins from cast iron to plastic systems
• Drainage upgrades and retrofit projects
• Domestic and commercial underground drainage systems

Performance & Durability

This adaptor is engineered for use in underground drainage environments, offering resilience to moisture, soil movement and general wear. The flexible rubber body helps it adapt to variances in pipe surfaces while the clamping bands create a secure, watertight connection that stands up to long term use.

The secure transition it provides helps protect the drainage system from leaks and maintains efficient flow through mixed pipework materials — a common challenge when integrating older cast iron or clay systems with modern plastic pipework.

Installation

The adaptor should be installed in line with the drainage layout and current regulations. Ensure both pipe ends are clean and cut square. Slide the flexible adaptor onto the clay or cast iron pipe and then onto the plastic pipe, tightening the clamp bands to achieve a secure, watertight seal.

Product Specifications

• Material: Flexible rubber body with steel clamp bands
• Connection Size: 4″ (nominal) / approx 110mm
• Application: Underground drainage
• Compatibility: Clay, cast iron and plastic pipework
• Function: Transitional adaptor
• Colour: Black