Bridge the gap in your piping system with our high-grade Plastic Pipe Adapter. This 4-inch to 6-inch (approx. 110mm to 160mm) stepped reducer is engineered to provide a structural, leak-proof transition between secondary waste lines and main drainage or ventilation stacks.
Stepped Transition: Specifically designed to increase or decrease flow between 4″ and 6″ pipe diameters.
Chemical Resistant PVC: Manufactured from heavy-duty PVC-U to withstand underground soil pressure and household chemicals.
Smooth Internal Taper: Precision-molded interior prevents debris snagging and maintains optimum flow velocity.
£10.99 Incl. VAT
A Plastic Pipe Adapter that transitions from 4 inches to 6 inches is primarily used in drainage, sewage, and large-scale ventilation systems. In the UK, most domestic waste exits the home via a 110mm (4″) pipe, which then needs to be “increased” to a 160mm (6″) main to join the primary sewer or a larger collection manifold. This adapter provides the critical, watertight seal required for that transition, preventing leaks and soil contamination.
When upgrading your drainage or heating ventilation, the quality of the connector is often the weakest link. At ECO HEAT SHOP LTD, our adapters are crafted from PVC-U, a material renowned for its rigidity and longevity. Unlike lower-grade plastics, our plastic pipe adapter will not warp or degrade over time, ensuring that the interface between your 4-inch and 6-inch pipes remains structurally sound for decades.
For drainage applications, it is vital to install this increaser in the direction of the flow to prevent blockages. The smooth, tapered interior of our adapter is designed to eliminate “lips” or edges where waste could accumulate. For a permanent, chemical-weld finish, we recommend using a high-quality solvent cement. If being used for air ducting, the adapter provides an airtight seal that helps maintain system pressure and efficiency.
Material: Industrial-Grade PVC-U (High-Impact).
Small End Diameter: 4 Inch (approx. 110mm Outside Diameter).
Large End Diameter: 6 Inch (approx. 160mm Outside Diameter).
Connection Type: Compatible with Solvent Weld or Push-Fit (with appropriate seals).
Applications: Main sewer connections, rainwater harvesting, and industrial HVAC ducting.
| Weight | 0.44 kg |
|---|---|
| Dimensions | 120 × 160 × 160 mm |
ECO Heat Shop Ltd provides national distribution for plumbing and heating supplies across England, Scotland, and Wales. Orders placed before the 18:00 PM (Afternoon) cutoff are typically processed for same-day dispatch.
View Full Shipping & Collection Policy ›Hours: Monday – Saturday: 08:30 AM – 06:30 PM | Sunday: Closed
Location: Unit 8 West Cross Shopping Centre, Oldbury Rd, Smethwick, B66 1JG
In-shop precision key cutting available during standard operational hours. Professional while-you-wait service for Smethwick residents and trade contractors.
Smart supplies for real heat.
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