DWV Flap Valve

DWV Flap Valve

• Sizes: 50mm to 225mm
• Model Name: DWV PVC Flap Valve
• Colour: Grey
• Material: PVC (Poly Vinyl Chloride)
• Watermark Certified: AS/NZS 1260
• Connection Type: Solvent Cement Joint (SCJ)

The DWV Flap Valve is a non-return fitting used in sewer and vent systems to prevent backflow while allowing one-way flow of air or wastewater. Commonly installed in drainage systems, this valve helps safeguard properties from unwanted odours, reverse flow, and contamination during surcharge events or heavy rainfall.

Designed for use in Drainage, Waste and Vent (DWV) systems, this flap valve fits inside the pipework using solvent cement for a durable, watertight seal. Its pale-grey PVC body offers high corrosion resistance, chemical durability, and ease of installation, making it suitable for both residential and commercial use.

Key Features:

• Prevents reverse flow in sewer and vent lines
• Designed for easy solvent cement connection
• Durable PVC construction – corrosion and chemical resistant
• Suitable for above-ground and underground installations
• UV-stabilised for limited external exposure
• Fully compliant with AS/NZS 1260

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