A self-sealing sink trap valve designed as a P-trap replacement with matching 1-1/2-inch slip-joint connections on inlet and outlet. The flexible membrane seal eliminates drawbacks of traditional water traps: no evaporation risk in warm weather, no siphonage damage, and no freeze-cracking in cold climates.

The one-way valve prevents sewer odours from entering your RV, whilst the air-admitting design relieves negative pressure in drain lines to maintain proper flow. The compact ABS plastic body fits snugly into cabinet spaces and tight plumbing areas. Silent operation without gurgling or air-lock problems.

• Self-sealing membrane design
• 1-1/2 inch slip-joint inlet
• 1-1/2 inch slip-joint outlet
• Matched P-trap configuration
• ABS plastic, white
• No mounting hardware
• Compact installation profile
• One-way odour barrier
• Silent, no water trap needed