- Stainless Steel Shaft. - Chemically Resistant Santoprene seals. - Threaded handle for easy replacement. Waste valve designed for use in RVs or other plumbing applications. Features a 3-inch diameter for efficient waste disposal. Made by Valterra, a trusted brand in RV and plumbing accessories. Provides a reliable seal to prevent leaks. Durable construction for long-lasting performance. MODEL NO - 850-01984