PVC Eccentric Reducer Bush Water Adhesive Fittings 50mm-200mm Drain Waste Vent

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PVC Eccentric Reducer Bush Water Adhesive Fittings 50mm-200mm Drain Waste Vent

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PVC Eccentric Reducer Bush — Solvent-Weld DWV Pipe Fittings for Drain, Waste & Vent Systems

When a drain line changes pipe diameter and flow alignment matters, a standard concentric reducer creates turbulence and pooling. Plumbers and contractors working on drain, waste, and vent (DWV) systems need an eccentric reducer bush that keeps the pipe invert flat, maintaining consistent flow direction and preventing sediment buildup at the transition point. These solvent-weld PVC eccentric reducer bushes are engineered for exactly that application.

Each fitting is manufactured from rigid PVC (polyvinyl chloride) with a solvent-cement socket (adhesive) connection on both ends. Available in six sizes spanning 75×50mm (approx. 3"×2") through 200×160mm (approx. 8"×6"), the eccentric offset keeps the bottom of the pipe bore level across the size transition. Wall thickness varies by size and is consistent with Schedule 40-equivalent DWV profiles.

Typical applications include residential and commercial drain line reductions where gravity flow must be maintained, horizontal branch connections in DWV rough-in work, and retrofit plumbing where an existing larger-diameter pipe must accept a smaller-diameter branch without creating a low-point trap. These fittings are also used in stormwater drainage and irrigation manifold assemblies requiring offset bore alignment.

🔗 Compatibility: Designed for solvent-cement (adhesive) joining with standard PVC DWV pipe. Confirm pipe OD and schedule before ordering. Not suitable for pressure-rated water supply lines.

✅ Key Features of These PVC Eccentric Reducer Bushes

📐 Eccentric Bore Offset: Flat-invert design keeps the pipe bottom level across the size transition, preserving gravity-flow drainage without creating a low-point trap.
🔩 Solvent-Weld Socket Ends: Both spigot and socket ends accept standard PVC solvent cement for a chemically fused, leak-free joint that meets DWV assembly requirements.
📏 Six Size Options: Covers reductions from 75×50mm up to 200×160mm (approx. 3"×2" to 8"×6"), accommodating the most common DWV pipe diameter transitions in one product line.
🛡️ Rigid PVC Construction: Resistant to common drain-line chemicals, household cleaners, and wastewater. Does not corrode, rust, or degrade under normal DWV service conditions.
⚖️ Lightweight for Easy Handling: PVC construction keeps each fitting light relative to its bore size, reducing fatigue during overhead or confined-space installation work.
📦 Flexible Quantity Packs: Available in packs of 1, 2, 3, 4, 5, or 10 pieces per size, allowing you to order exactly what a single job or a full project stock requires.

📐 Technical Specifications — PVC Eccentric Reducer Bush

Product Type	Eccentric Reducer Bush
Material	Rigid PVC (Polyvinyl Chloride)
Connection Type	Solvent Cement (Adhesive) Socket × Spigot
Available Sizes	75×50mm / 110×50mm / 110×75mm / 160×110mm / 200×110mm / 200×160mm
Size Range (Imperial approx.)	3"×2" to 8"×6"
Bore Alignment	Eccentric (flat-invert / bottom-aligned)
Application	Drain, Waste & Vent (DWV) systems
Fluid Compatibility	Wastewater, grey water, stormwater (non-pressure)
Pressure Rating	Non-pressure DWV service (gravity flow)
Color	See variant options
Wall Thickness	See variant options
Pack Quantities Available	1 / 2 / 3 / 4 / 5 / 10 pcs

❓ Frequently Asked Questions

What is the difference between an eccentric and a concentric reducer bush?

A concentric reducer is symmetrical — the centerline of both pipe ends aligns. An eccentric reducer offsets the bore so that one side (typically the bottom/invert) remains flat across the transition. In horizontal DWV runs, this flat-invert alignment prevents a low point from forming at the reduction, which would trap solids and cause blockages over time.

Which size should I choose for my drain line?

Match the larger socket end to your existing pipe's outer diameter and the smaller spigot end to the branch or downstream pipe. Common residential reductions are 110×50mm (4"×2") for basin branches and 160×110mm (6"×4") for main stack reductions. Measure your pipe OD before ordering — nominal pipe sizes can vary slightly between schedules.

Can these fittings be used for pressure water supply lines?

No. These eccentric reducer bushes are rated for gravity-flow DWV service only. They are not pressure-rated and should not be used on cold or hot water supply lines, compressed air, or any pressurized system. For pressure applications, use fittings specifically rated to the required working pressure.

What solvent cement should I use to join these fittings?

Use a PVC solvent cement formulated for DWV or all-purpose PVC applications. Apply a PVC primer to both the socket and spigot surfaces first, then apply cement to both surfaces and push the fitting home with a quarter-turn. Follow the cement manufacturer's cure time before running water through the joint — typically 15–30 minutes for initial set and 24 hours for full cure.

Are these fittings resistant to household drain chemicals and cleaners?

Rigid PVC is resistant to most household drain cleaners, detergents, and wastewater constituents at normal DWV service temperatures (up to approximately 60°C / 140°F). Avoid prolonged exposure to concentrated solvents or very high-temperature discharges (e.g., direct boiling water), which can soften PVC over time.

How many pieces do I need for a typical single-point reduction?

A single pipe diameter reduction requires one eccentric reducer bush. If you are roughing in multiple branch connections or stocking for a full project, the 5-pack or 10-pack options offer a lower per-unit cost. Select the quantity that matches your job scope to avoid unnecessary surplus or mid-job shortages.

Can I use these fittings for stormwater or outdoor drainage applications?

Yes. Rigid PVC is UV-stable enough for buried or shaded outdoor drainage use. For exposed above-ground installations in direct sunlight, consider painting the fitting with a UV-protective coating or using fittings specifically rated for UV exposure, as prolonged direct UV can cause surface chalking on standard PVC over several years.

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PVC Eccentric Reducer Bush Water Adhesive Fittings 50mm-200mm Drain Waste Vent

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Beschreibung

PVC Eccentric Reducer Bush — Solvent-Weld DWV Pipe Fittings for Drain, Waste & Vent Systems

✅ Key Features of These PVC Eccentric Reducer Bushes

📐 Technical Specifications — PVC Eccentric Reducer Bush

❓ Frequently Asked Questions

PVC Eccentric Reducer Bush Water Adhesive Fittings 50mm-200mm Drain Waste Vent

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