A self-sealing sink trap valve that uses a flexible membrane to seal the drain opening instead of relying on trapped water. This design eliminates the risks associated with water traps in RVs, including evaporation in warm seasons, siphonage that can damage seals, and cracking from freezing temperatures.

The valve connects with 1-1/4-inch slip-joint inlet and 1-1/2-inch slip-joint outlet fittings, making it compatible with standard RV plumbing. A one-way valve prevents sewer odours from backing up into your living space, whilst the compact design fits into tight cabinets and confined areas. Operation is silent without the gurgling sounds associated with traditional traps. The air-admitting function relieves negative pressure in drain lines.

• Self-sealing membrane technology
• 1-1/4 inch slip-joint inlet
• 1-1/2 inch slip-joint outlet
• ABS plastic body, white
• No mounting hardware included
• Compact for confined installation
• One-way odour barrier
• No water trap required