PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey
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PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), GreyPVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey

PVC Straight Pipe Coupling — Socket Slip Joint Fitting, 20–200mm (3/4" to 8"), Grey

HomeDIYer
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By HomeDIYer®

Price:
$1.62 USD
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In stock (500 units), ready to be shipped

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Description

PVC Straight Pipe Coupling — Reliable Slip-Joint Connection for Water Pipe Systems

Whether you're patching a burst line, extending an irrigation run, or roughing in a new drain, a loose or mismatched coupling can turn a 20-minute fix into an all-day leak chase. These PVC straight pipe couplings give plumbers, contractors, and serious DIYers a clean, solvent-weld socket joint that holds tight the first time — no threading, no clamps, no guesswork.

Each coupling is molded from rigid grey PVC and features a smooth slip-joint (socket) interior on both ends. Available in 12 inner-diameter sizes — 20mm (≈3/4"), 25mm (≈1"), 32mm (≈1-1/4"), 40mm (≈1-1/2"), 50mm (≈2"), 63mm (≈2-1/2"), 75mm (≈3"), 90mm (≈3-1/2"), 110mm (≈4-1/3"), 125mm (≈5"), 160mm (≈6-1/4"), and 200mm (≈8") — with packing options of 1, 2, 3, 4, 5, 8, or 10 pieces per order so you can stock exactly what the job requires.

Typical applications include residential and commercial water supply lines, drip and sprinkler irrigation systems, rainwater harvesting pipe runs, and gravity-fed drain or waste lines where a straight inline connection is needed. The slip-socket design is especially useful for PVC straight coupling repair work where a quick, solvent-cement joint is preferred over mechanical fittings.

🔵 Compatibility Note: These couplings are sized by inner diameter to match metric-dimensioned PVC pipe OD. Verify your pipe's outer diameter before ordering. For Schedule 40 ASTM pipe, confirm OD matches the metric size listed. Solvent cement and PVC primer required for installation — not included.

✅ Key Features of These PVC Straight Pipe Couplings

  • 🔗Full-Socket Slip-Joint Design — Both ends feature a smooth socket bore sized to accept pipe OD directly, creating a flush, gap-free solvent-weld joint with no exposed threads to corrode or strip.
  • 📐12 Sizes from 20mm to 200mm — Covers the most common metric PVC pipe diameters used in residential plumbing, irrigation, and drainage, from 20mm (≈3/4") up to 200mm (≈8") for large-bore drain lines.
  • 🧱Rigid Grey PVC Construction — Molded from unplasticized PVC (uPVC), which is dimensionally stable, resistant to most household chemicals, and does not rust, rot, or corrode in soil or water environments.
  • 💧Smooth Bore Interior — The unobstructed internal bore maintains full flow capacity and minimizes turbulence, making these fittings well-suited for water supply lines and irrigation pipe coupling applications where flow efficiency matters.
  • 📦Flexible Pack Quantities (1–10 pcs) — Order a single coupling for a spot repair or a 10-pack for a full irrigation loop. Bulk packs reduce per-unit cost for contractors running multiple joints on the same project.
  • 🔧Solvent-Weld Ready Surface — The socket interior is machined to close tolerance for consistent cement adhesion. Compatible with standard PVC solvent cement and primer, following ASTM D2564 application guidelines.

📐 Technical Specifications — PVC Straight Socket Coupling

Product Type Straight Pipe Coupling / Socket Slip-Joint Fitting
Material Rigid PVC (uPVC), Grey
Connection Type Slip-Joint Socket (Solvent Weld, both ends)
Available Inner Diameters 20mm (≈3/4"), 25mm (≈1"), 32mm (≈1-1/4"), 40mm (≈1-1/2"), 50mm (≈2"), 63mm (≈2-1/2"), 75mm (≈3"), 90mm (≈3-1/2"), 110mm (≈4-1/3"), 125mm (≈5"), 160mm (≈6-1/4"), 200mm (≈8")
Packing Quantity Options 1, 2, 3, 4, 5, 8, or 10 pieces per order
Color / Finish Grey (standard PVC color)
Pipe Standard Compatibility Metric-dimensioned PVC pipe; verify OD match for ASTM Schedule 40
Pressure Rating See variant options (typically 100–250 PSI depending on diameter)
Wall Thickness See variant options / Contact us to confirm
Installation Method PVC primer + solvent cement (not included)
Typical Applications Water supply, irrigation, drainage, rainwater systems
Country of Origin Contact us to confirm

❓ Frequently Asked Questions

How do I choose the right size PVC coupling for my pipe?

Match the coupling's inner diameter to your pipe's outer diameter. For example, a 20mm (≈3/4" nominal) coupling fits a 20mm OD PVC pipe. Always measure your existing pipe's OD with calipers before ordering — nominal pipe sizes can differ from actual OD. Common metric sizes and approximate US equivalents: 20mm ≈ 3/4", 25mm ≈ 1", 32mm ≈ 1-1/4", 40mm ≈ 1-1/2", 50mm ≈ 2", 63mm ≈ 2-1/2", 75mm ≈ 3", 90mm ≈ 3-1/2", 110mm ≈ 4-1/3", 125mm ≈ 5", 160mm ≈ 6-1/4", 200mm ≈ 8".

What pressure rating do these PVC couplings typically handle?

PVC straight couplings in this size range generally support working pressures of 100–250 PSI depending on pipe diameter and wall schedule. Larger diameters typically carry lower pressure ratings. For pressure-critical applications, contact us to confirm the rating for your specific size before installation.

Can these couplings be used outdoors or underground?

PVC is generally resistant to moisture and soil corrosion, making it suitable for underground and outdoor use in most climates. However, prolonged UV exposure can cause surface brittleness over time. For above-ground outdoor installations, consider painting the fitting with a UV-blocking paint or wrapping it to extend service life.

Are these couplings compatible with standard Schedule 40 PVC pipe?

These fittings are sized by metric inner diameter to match metric-dimensioned PVC pipe OD. Compatibility with ASTM Schedule 40 pipe depends on whether the pipe's actual OD matches the metric size listed. In many cases metric and Schedule 40 ODs align at common sizes, but always verify your pipe's OD with calipers before ordering.

Do I need solvent cement to install these couplings?

Yes. These are slip-joint (socket) couplings designed for solvent-weld installation. Apply PVC primer to both the pipe end and the socket interior, then apply solvent cement and insert the pipe with a slight twist. Hold for 30 seconds and allow the joint to cure per the cement manufacturer's instructions before pressurizing the line.

How many couplings should I order for my project?

Each coupling joins two pipe ends in a straight line. For a single repair cut you typically need 1 coupling. For longer runs with multiple joints, ordering in packs of 5 or 10 reduces per-unit cost. Available pack sizes are 1, 2, 3, 4, 5, 8, and 10 pieces — select the quantity that matches your project scope.

Is this fitting safe for drinking water (potable water) applications?

This fitting is made from PVC material. For potable water applications, the fitting should generally meet NSF/ANSI 61 or equivalent local standards. Contact us to confirm certification status for your specific size before using in a drinking water system.

🛒 Select your size and quantity above, then add to cart — ships from our US warehouse.

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