Ramptech Lavatory Wye Drain Couplings are engineered for ease of use and highly reliable performance, without spillage or leakage. Made of impact-resistant and non-porous composite that is 40 percent lighter than aluminum wye drain couplings, these couplings make it fast and simple to remove the lavatory drain plug or “donut” from the aircraft lavatory drain nipple – allowing waste to drain at full flow into the lavatory service truck while eliminating ramp spills to ensure rapid waste removal. Further productivity and performance are provided by a high-visibility yellow collar. They are designed for a leak-proof connection on all standard 4" drain nipples and they also feature a stainless steel cam ring as well as a stainless steel retaining washer, snap ring and control shaft for extra corrosion resistance and superior durability.