110-200mm PVC Pipe Reducing Plumbing Concentric Connector Coupling Fittings Big

Roll over image to zoom in Click on image to zoom

110-200mm PVC Pipe Reducing Plumbing Concentric Connector Coupling Fittings Big

HomeDIYer

No reviews

By HomeDIYer®

Big ID x Small ID: 110x50mm

Amount: 1pcs

Price:

$12.19 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

Share this product

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Quantity Discount Promotion

DIY Expert Support

Get fitment advice & recommendations

Mon-Fri, 8:30AM-8PM

WhatsApp Email

⚡

24-Hour Fast Ship

🚚

Arrives in 3-14 days

🌍

Global Reach

↩️

30-Day Returns

🌱 1 tree planted with every purchase

PVC Pipe Reducing Concentric Coupling — Leak-Free Connections for Every Pipe Transition

When two pipes of different diameters need to meet cleanly, a poorly matched reducer causes leaks, pressure loss, and costly rework. Plumbers, contractors, and serious DIYers working on drainage, water supply, or irrigation systems need a concentric reducing coupling that seats flush, holds under pressure, and resists the chemicals found in modern plumbing environments. These PVC pipe reducing couplings are engineered for exactly that job.

Each fitting is molded from rigid PVC (polyvinyl chloride), offering a smooth bore interior that minimizes flow restriction. The concentric design keeps both pipe centerlines aligned, making installation straightforward without offset adjustments. Available in a wide size matrix spanning outer diameters from 110 mm (approx. 4.33 in) up to 200 mm (approx. 7.87 in), with inner reduction openings from 50 mm (approx. 1.97 in) to 160 mm (approx. 6.30 in), covering the most common residential and light-commercial pipe transition combinations.

Typical use cases include connecting a 110 mm main drain line to a 50 mm branch line in residential bathroom plumbing, stepping down a 160 mm stormwater pipe to a 90 mm downpipe in roofing drainage systems, and transitioning between irrigation mains and lateral supply lines in garden or agricultural setups — all scenarios where a secure, solvent-weld or push-fit concentric reducer is the correct solution.

🔗 Compatible with standard PVC pressure and drainage pipe systems. Verify your pipe's outer diameter and wall schedule before ordering. Solvent-cement or push-fit connection method depends on variant end type.

✅ Key Features of These PVC Pipe Reducing Concentric Couplings

📐 Wide Size Range — Big ID × Small ID combinations from 110×50 mm up to 200×160 mm cover the most common residential and commercial pipe reduction scenarios in a single product line.
🔄 Concentric Alignment — Both pipe ends share the same centerline, eliminating offset stress on joints and ensuring smooth, turbulence-free flow through the transition zone.
🧪 Rigid PVC Construction — Resistant to common household chemicals, chlorinated water, and mild acids found in drainage systems; will not rust, corrode, or degrade under normal plumbing conditions.
⚡ Smooth Bore Interior — The uniform internal surface reduces friction loss and prevents debris buildup, maintaining consistent flow rates over the life of the installation.
🛠️ Solvent-Weld Ready — Machined socket ends accept standard PVC solvent cement for a permanent, watertight bond; compatible with widely available PVC primer and cement products.
📦 Flexible Quantity Options — Available in 1, 2, 3, or 4-piece packs so you can order exactly what your project requires without overstocking or making multiple trips.

📐 Technical Specifications — PVC Reducing Concentric Coupling

Material	Rigid PVC (Polyvinyl Chloride)
Fitting Type	Concentric Reducing Coupling
Big ID (Larger End)	110 mm / 125 mm / 160 mm / 200 mm (see variant options)
Small ID (Smaller End)	50 mm / 63 mm / 75 mm / 90 mm / 110 mm / 125 mm / 160 mm (see variant options)
Size Range	110×50 mm up to 200×160 mm (approx. 4.33×1.97 in – 7.87×6.30 in)
Connection Method	Solvent-weld socket (PVC cement compatible)
Color	See variant options
Wall Thickness	See variant options
Working Pressure	Contact us to confirm
Temperature Range	Typically 0°C – 60°C (32°F – 140°F) for standard PVC
Quantity per Pack	1 / 2 / 3 / 4 pcs (see variant options)
Applicable Standards	Contact us to confirm

❓ Frequently Asked Questions

How do I choose the right size reducing coupling for my pipes?

Measure the outer diameter (OD) of both pipes you need to connect. The "Big ID" refers to the socket opening that accepts the larger pipe, and the "Small ID" refers to the socket that accepts the smaller pipe. Match each measurement to the corresponding variant option. If you are unsure, a pipe sizing chart or a quick measurement with calipers will give you the exact OD you need.

Are these couplings suitable for pressure water supply lines?

These fittings are molded from rigid PVC and are designed for standard plumbing applications. Suitability for pressurized supply lines depends on the specific pressure rating of the variant and your local plumbing code. Please contact us to confirm the working pressure rating before using in pressurized supply applications.

How corrosion-resistant are PVC reducing couplings?

PVC is inherently non-metallic and will not rust or corrode. It resists chlorinated water, mild acids, and most household chemicals commonly found in drainage and irrigation systems. For highly aggressive chemical environments, verify chemical compatibility with a PVC resistance chart before installation.

Can I use these fittings for drainage and stormwater applications?

Yes. The concentric reducing design and smooth bore interior make these couplings well-suited for gravity-fed drainage, stormwater downpipe transitions, and sewer lateral connections. Ensure the size combination you select matches the pipe ODs in your drainage system.

What adhesive or cement should I use to install these couplings?

Use a standard PVC solvent cement (and PVC primer where required by local code) compatible with rigid PVC pipe. Clean and dry both the pipe end and the socket interior before applying primer and cement. Follow the cement manufacturer's cure time instructions before pressurizing or flowing water through the joint.

Are these couplings compatible with both metric and imperial PVC pipe?

The sizes listed (e.g., 110 mm, 125 mm, 160 mm, 200 mm) follow metric DIN/ISO pipe standards common in plumbing and drainage systems. Imperial pipe schedules (e.g., 4-inch Schedule 40) may have slightly different ODs. Always verify your pipe's actual outer diameter against the coupling's socket ID before purchasing to ensure a proper fit.

Why should I choose a concentric reducer over an eccentric reducer?

A concentric reducer keeps both pipe centerlines aligned, which is ideal for vertical pipe runs and applications where symmetrical flow is important. An eccentric reducer offsets one side to keep the pipe bottom flat, which is preferred for horizontal runs where air pockets or drainage slope matters. For most residential drainage and irrigation transitions, a concentric coupling is the standard and simpler choice.

🛒 Select your Big ID × Small ID size and quantity above, then add to cart.

110-200mm PVC Pipe Reducing Plumbing Concentric Connector Coupling Fittings Big

Payment & Security

Let customers speak for us

DIY Expert Support

Description

PVC Pipe Reducing Concentric Coupling — Leak-Free Connections for Every Pipe Transition

✅ Key Features of These PVC Pipe Reducing Concentric Couplings

📐 Technical Specifications — PVC Reducing Concentric Coupling

❓ Frequently Asked Questions

110-200mm PVC Pipe Reducing Plumbing Concentric Connector Coupling Fittings Big

You may also like

Recently viewed