DWV INSPECTION OUTLET CAP WITH O‑RING

The Holman DWV Universal Threaded Cap with O-Ring is a reliable replacement cap designed for use with DWV inspection opening bends. Suitable for threaded inspection opening bends in the Holman 40–65mm range, this universal fitting eliminates the need to source multiple caps for different pipe sizes, making it a practical and cost-effective solution for both maintenance and new installations.

Use cases

• Replacing damaged or missing IO caps on existing residential or commercial drainage systems
• Routine plumbing maintenance where inspection openings need to be securely resealed after drain clearing, CCTV inspection, or blockage removal
• New DWV installations where a secure, standards-compliant cap is required on inspection opening bends
• Renovation and repair projects involving existing 40mm, 50mm, or 65mm DWV pipework

Durable, reliable fitting

The integrated rubber o-ring provides a secure, airtight seal that helps prevent sewer gas escape and unwanted odours – a common issue with standard caps that lack an o-ring. The 32mm female thread ensures a firm, hand-tightened connection to the inspection opening, and the universal design means fewer items to carry on the truck or keep in stock.

Manufactured from durable PVC-U, this cap is lightweight, corrosion-resistant, and impervious to bacterial and fungal attack, and tree root intrusion – making it suitable for both above-ground and below-ground DWV applications.

Standards compliant

Complies with AS/NZS 1260, the Australian and New Zealand standard for PVC-U pipes and fittings in drain, waste, and vent applications. Inspection openings are a requirement under AS/NZS 3500.2 to allow access for inspection, testing, and ongoing maintenance of drainage plumbing systems.