PVC Pipe Reducing Plumbing Concentric Connector 25-90mm Coupling Fittings Blue

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PVC Pipe Reducing Plumbing Concentric Connector 25-90mm Coupling Fittings Blue

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Big ID x Small ID: 25x20mm

Amount: 1pcs

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$1.75 USD

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Verfügbar (500 Stück), versandbereit

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PVC Concentric Reducing Couplings — Reliable Pipe Connections for Every Size Step-Down

When a plumbing run demands a clean transition between two different pipe diameters, mismatched fittings cause leaks, pressure drops, and frustrating rework. Makers, plumbers, and DIY builders who need a dependable, tool-free solution turn to these blue PVC concentric reducing couplings to get the job done right the first time.

Each coupling is molded from rigid PVC (polyvinyl chloride) in a concentric reducer profile, meaning both openings share the same centerline for straight-run installations. Available in a broad size matrix spanning 25 mm to 90 mm (approximately 1 in to 3½ in) on the large-end socket, with small-end reductions ranging from 20 mm to 75 mm (approximately ¾ in to 3 in). The blue color finish provides instant visual identification in multi-pipe systems and color-coded assemblies.

Typical use cases include residential and commercial cold-water supply lines, drip and sprinkler irrigation manifolds, aquaponics and hydroponics distribution networks, and workshop dust-collection duct step-downs — anywhere a concentric PVC reducing coupling for irrigation or a PVC pipe reducer fitting for plumbing is required.

🔗 Compatibility: Designed for standard PVC pressure pipe (Schedule 40 / PN10–PN16 equivalent). Confirm your pipe's outer diameter against the variant dimensions before ordering. Not rated for hot-water or solvent-chemical service.

✅ Key Features of These PVC Concentric Reducing Couplings

📐 Wide Size Matrix Covers 21 size combinations from 25×20 mm up to 90×75 mm, eliminating the need for multiple adapter types in a single project.

🔵 Color-Coded Blue Finish The consistent blue pigmentation makes cold-water lines instantly distinguishable in multi-pipe installations and color-coded DIY assemblies.

🔩 Concentric Reducer Profile Both sockets share the same centerline, enabling straight-run pipe transitions without offset bends or additional elbows.

🛡️ Rigid PVC Construction PVC resists corrosion, scale buildup, and UV degradation better than metal alternatives in exposed or damp environments.

📦 Flexible Quantity Options Available in packs of 1, 2, 3, 4, 10, 20, or 50 pieces — order exactly what your project requires without overstocking.

⚡ Solvent-Weld Ready Smooth socket interiors accept standard PVC cement for a permanent, leak-free bond with no special tools required.

📐 Technical Specifications — PVC Reducing Coupling Fittings

Material	Rigid PVC (Polyvinyl Chloride)
Color / Finish	Blue
Reducer Type	Concentric (shared centerline)
Large-End Socket Range	25 mm – 90 mm (approx. 1 in – 3½ in)
Small-End Socket Range	20 mm – 75 mm (approx. ¾ in – 3 in)
Available Size Combinations	See variant options
Wall Thickness	See variant options
Pressure Rating	See variant options
Connection Method	Solvent-weld (PVC cement)
Compatible Pipe Standard	Schedule 40 / PN10–PN16 equivalent PVC pressure pipe
Temperature Range	Cold water service (typically 0 °C – 60 °C / 32 °F – 140 °F)
Pack Quantities Available	1, 2, 3, 4, 10, 20, 50 pcs

❓ Frequently Asked Questions

How do I choose the correct size for my pipes?

Measure the outer diameter (OD) of both pipes you need to join. The "Big ID" in the variant name refers to the larger socket opening and the "Small ID" refers to the smaller socket opening. Match these to your pipe ODs. If you are unsure, consult your pipe's datasheet or measure with calipers before ordering.

Are these fittings suitable for hot-water plumbing?

No. These couplings are rated for cold-water service only (typically up to 60 °C / 140 °F under low pressure). For hot-water lines, CPVC or other heat-rated fittings are required. Using PVC beyond its rated temperature can cause deformation and failure.

How strong is the solvent-weld bond?

A properly made solvent-weld joint fuses the PVC pipe and fitting into a single monolithic piece. When cured correctly, the joint is typically stronger than the pipe wall itself. Follow the cement manufacturer's cure time instructions — usually 15–30 minutes before handling and 24 hours before pressurizing.

Will these fittings resist corrosion and chemicals?

Rigid PVC offers excellent resistance to corrosion, scale, and many common chemicals including dilute acids and alkalis. However, it is not compatible with concentrated solvents, ketones, or aromatic hydrocarbons. Always verify chemical compatibility with a PVC resistance chart before use in chemical-handling applications.

Can I use these for irrigation and garden watering systems?

Yes. These PVC concentric reducing couplings are well-suited for drip irrigation, sprinkler manifolds, and garden water distribution systems. The blue color also helps distinguish cold-water irrigation lines from other pipe runs. Ensure the operating pressure stays within the fitting's rated range.

How many pieces should I order for my project?

Count the number of diameter transitions in your pipe layout and add 10–15% extra for contingency. For small repairs or prototyping, the 1–4 pcs options are ideal. For larger installations such as irrigation manifolds or workshop dust-collection systems, the 10, 20, or 50 pcs packs offer better per-unit value.

Are these fittings compatible with both metric and imperial pipe sizes?

The dimensions listed (25 mm, 32 mm, 40 mm, etc.) follow metric PVC pipe standards. While approximate inch equivalents are provided for reference, these fittings are designed for metric-dimensioned pipe. Verify your pipe's actual OD before purchasing if you are working with imperial-nominal pipe, as nominal sizes may not match metric ODs exactly.

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

PVC Pipe Reducing Plumbing Concentric Connector 25-90mm Coupling Fittings Blue

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Beschreibung

PVC Concentric Reducing Couplings — Reliable Pipe Connections for Every Size Step-Down

✅ Key Features of These PVC Concentric Reducing Couplings

📐 Technical Specifications — PVC Reducing Coupling Fittings

❓ Frequently Asked Questions

PVC Pipe Reducing Plumbing Concentric Connector 25-90mm Coupling Fittings Blue

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