- New
The Valterra F02-2025BK straight coupler connects two 3-inch RV sewer drain hoses to extend the wastewater drainage system. Its black plastic construction provides a simple inline connection: slide one hose onto each end of the coupler and secure them with hose clamps (sold separately). Designed for RV sanitation applications, this fitting is a practical replacement or extension component for compatible 3-inch drain hoses.