Standard Waste Vent Cowl 110mm uPVC Grey

110mm PVC Vent Cowl

The Standard Waste Vent Cowl provides a durable termination point for soil and waste vent pipes in residential and commercial drainage systems. This uPVC fitting effectively balances internal system pressure by allowing atmospheric air to enter the stack. It prevents the siphonage of water seals in traps, ensuring sewer gases do not enter the building interior.

Built for the Job

Plumbers and site supervisors install this fitting at the highest point of a soil stack to protect the drainage network from external blockages. The slotted design allows for maximum airflow while preventing birds from nesting inside the pipe or debris from entering the stack. It features a high-tolerance friction fit that secures directly to 110mm soil pipes without the immediate need for solvent cement, though adhesive can be used for permanent high-wind applications. This component is essential for maintaining the hydraulic performance of the entire waste system and preventing gurgling in downstream fixtures.

• Termination of 110mm soil vent pipes on residential rooftops.

• Secondary ventilation stacks in commercial plumbing layouts.

• Retrofitting existing open stacks to prevent pest ingress.

Product Highlights

UV-Stabilized Construction

The unplasticized polyvinyl chloride material resists degradation and brittleness caused by direct sunlight exposure.

Pest and Debris Shield

• Slotted cage prevents bird nesting and rodent entry
• Minimizes leaf and twig accumulation in the main stack

Technical Specifications

What’s Included

• 1 x 110mm Waste Vent Cowl (Grey)

On-Site & Workshop Notes

• Ensure the vent pipe extends at least 900mm above any window or opening within a 3-meter radius to comply with building regulations.

• The internal ribs provide a secure grip on standard PVC pipes, but check for burrs on the pipe end before fitting.

• This terminal requires no regular maintenance once installed but should be inspected if drainage speed noticeably decreases.

• Store these units away from heavy site equipment to prevent impact damage to the slotted cage before installation.