20 25 32 40 50mm PVC Water Pipe Fittings Drainage Couplers Adapter Straight
20 25 32 40 50mm PVC Water Pipe Fittings Drainage Couplers Adapter Straight
20 25 32 40 50mm PVC Water Pipe Fittings Drainage Couplers Adapter Straight
20 25 32 40 50mm PVC Water Pipe Fittings Drainage Couplers Adapter Straight
20 25 32 40 50mm PVC Water Pipe Fittings Drainage Couplers Adapter Straight
20 25 32 40 50mm PVC Water Pipe Fittings Drainage Couplers Adapter Straight
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20 25 32 40 50mm PVC Water Pipe Fittings Drainage Couplers Adapter Straight20 25 32 40 50mm PVC Water Pipe Fittings Drainage Couplers Adapter Straight20 25 32 40 50mm PVC Water Pipe Fittings Drainage Couplers Adapter Straight20 25 32 40 50mm PVC Water Pipe Fittings Drainage Couplers Adapter Straight20 25 32 40 50mm PVC Water Pipe Fittings Drainage Couplers Adapter Straight20 25 32 40 50mm PVC Water Pipe Fittings Drainage Couplers Adapter Straight

20 25 32 40 50mm PVC Water Pipe Fittings Drainage Couplers Adapter Straight

HomeDIYer
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By HomeDIYer®

Price:
$2.52 USD
Stock:
In stock (500 units), ready to be shipped

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Description

PVC Pipe Fittings Drainage Couplers — Leak-Free Connections for Every Pipe Run

When a leaking joint or a mismatched pipe diameter stalls your plumbing or irrigation project, you need a fitting that simply works — first time, every time. Whether you're a homeowner tackling a bathroom renovation, a landscaper routing drip lines, or a contractor running drainage runs, these PVC water pipe fittings deliver a secure, tool-free slip connection that holds under pressure.

Each coupler is molded from rigid PVC (polyvinyl chloride), offering a smooth bore interior and uniform wall thickness. The straight adapter design accommodates pipe outer diameters of 20mm (~¾ in), 25mm (~1 in), 32mm (~1¼ in), 40mm (~1½ in), and 50mm (~2 in). Available in White, Blue, and Grey finishes to support colour-coded system identification or aesthetic matching.

Typical use cases include residential drainage and waste lines, garden irrigation lateral connections, aquarium and pond plumbing circuits, and light-duty industrial fluid transfer where a straight inline coupler is required. Long-tail applications: PVC straight coupler for 20mm irrigation pipe, 50mm drainage adapter for bathroom waste, 32mm PVC slip coupling for pool plumbing.

🔗 Compatibility: Designed for standard-OD PVC pressure and drainage pipe in sizes 20 / 25 / 32 / 40 / 50 mm. Confirm your pipe's outer diameter before ordering. Not intended for CPVC, ABS, or metal pipe without an appropriate transition fitting.

✅ Key Features of These PVC Pipe Fittings Drainage Couplers

  • 📐Five Size Options — 20 / 25 / 32 / 40 / 50 mm OD coverage in a single product listing; select the exact diameter your pipe run requires.
  • 🎨Three Colour Finishes — White, Blue, and Grey allow colour-coded zone identification in irrigation, aquarium, or multi-circuit plumbing systems.
  • 🔩Straight Slip-Fit Design — Smooth socket ends accept standard PVC pipe for solvent-cement bonding, creating a rigid, leak-resistant inline joint without threading or special tools.
  • 💧Rigid PVC Construction — Resistant to common household chemicals, chlorinated water, and mild acids; maintains dimensional stability across typical indoor and outdoor temperature ranges.
  • 📦Flexible Pack Quantities — Available in 1, 2, 3, 4, 10, and 20-piece packs so you can order exactly what your project demands — no excess, no shortfall.
  • 🏗️Broad Application Range — Suitable for residential drainage, garden irrigation, pond and aquarium plumbing, and light-duty fluid transfer lines where a straight inline coupler is needed.

📐 Technical Specifications — PVC Straight Pipe Couplers

Material Rigid PVC (Polyvinyl Chloride)
Fitting Type Straight Coupler / Inline Adapter
Connection Method Slip socket (solvent-cement compatible)
Available Sizes (OD) 20 mm / 25 mm / 32 mm / 40 mm / 50 mm
Available Colours White, Blue, Grey
Pack Quantities 1 / 2 / 3 / 4 / 10 / 20 pcs
Wall Thickness See variant options
Working Pressure See variant options
Temperature Range See variant options
Applicable Standards See variant options
Weight (per piece) See variant options

❓ Frequently Asked Questions

How do I choose the right size coupler for my pipe?

Measure the outer diameter (OD) of your existing pipe — not the inner bore. Match that measurement to the size option: 20 mm (~¾ in), 25 mm (~1 in), 32 mm (~1¼ in), 40 mm (~1½ in), or 50 mm (~2 in). If you are unsure, use a caliper or wrap a tape measure around the pipe and divide the circumference by π (3.14) to get the OD.

Can I use these fittings without solvent cement?

These are slip-socket fittings designed for solvent-cement (PVC glue) bonding. For a permanent, pressure-rated joint, apply PVC primer and cement per the adhesive manufacturer's instructions. Dry-fitting without cement is suitable only for temporary test assemblies and will not hold under water pressure.

Are these fittings suitable for drinking water (potable water) applications?

These couplers are made from rigid PVC and are commonly used in irrigation and drainage systems. For confirmed potable water compliance in your region, please contact us to confirm the applicable certification (e.g., NSF/ANSI 61) before use in drinking water lines.

How corrosion-resistant are PVC fittings compared to metal alternatives?

PVC does not rust, corrode, or scale the way iron or copper fittings can. It is resistant to chlorinated water, mild acids, and most household chemicals. This makes it a reliable long-term choice for drainage, irrigation, and aquatic systems where moisture exposure is constant.

What is the difference between White, Blue, and Grey — is it purely cosmetic?

The colour difference is primarily aesthetic and functional for identification. Many installers use colour coding to distinguish zones — for example, blue for cold water supply, grey for drainage, white for general use. All three colours are the same PVC material and carry the same structural properties.

Can these couplers connect pipes of two different diameters?

No — these are straight (equal) couplers designed to join two pipes of the same diameter. If you need to connect pipes of different sizes, you will require a reducer coupling or bushing. Please browse our other fittings or contact us for a recommendation.

Which pack size should I order for a typical home repair?

For a single joint repair, the 1-piece or 2-piece pack is sufficient. For a bathroom or kitchen renovation with multiple joints, the 4-piece or 10-piece pack offers better value per unit. Landscapers and contractors running full irrigation circuits typically find the 20-piece pack most cost-effective.

🛒 Select your colour, size, and pack quantity above, then add to cart.

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