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White 4-inch PVC IPS compression coupling, front view showing compression nut and gasket, 10-inch body, product detail image.

110-40 (CPC4000) — 4 in. PVC IPS Compression Coupling, 10 in

Brand: PVC
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$123.54
$92.66
SKU CPC4000
In Stock (6)

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Reliable PVC compression coupling designed for 4 in. IPS pipe (nominal). The 110-40 (CPC4000) couples two sections quickly without solvent welds, using a threaded compression nut and a sealed gasket to provide a secure, potable-water-compatible connection.

  • Nominal size: 4 in. IPS (fits iron pipe size PVC)
  • Material: Durable PVC body with molded white finish
  • Length: 10 in. overall for easy alignment and repair
  • Sealing system: Buna‑N or high-strength elastomer gasket (manufacturer dependent) for long-term leak resistance
  • Threading: ACME-style compression cap threads for reliable engagement
  • Pressure rating: Typically rated to 200 PSI at 73°F for full-service operation
  • Certifications & use: NSF/UPC approvals and potable-water suitability on many manufacturer variants
  • Applications: Repair, splicing, and system modifications in irrigation, waterworks, and general plumbing

Easy to install with common tools, this compression coupling provides a reversible, maintenance-friendly alternative to solvent-weld fittings. Choose the coupling for fast repairs, conversion to spigot ends, or where a non-permanent connection is preferred. Verify compatibility with your pipe schedule and local codes before installation.

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Frequently Asked Questions

What pipe size and type does this coupling fit?
This coupling is sized for 4 in. IPS (iron pipe size) PVC pipe; confirm pipe schedule before installation.
How much pressure can the 110-40/CPC4000 handle?
Typical full-service rating is up to 200 PSI at 73°F; check manufacturer specs on your variant.
Is this coupling suitable for potable water systems?
Many manufacturer variants are NSF/UPC certified for potable water; verify certification on the product label.
How is the coupling installed and maintained?
Install using standard wrenches on the compression nuts; inspect gaskets periodically and re-torque if needed.