Features: Upgrading your motorhomes black tanks flush system with our brass vacuum breaker check valves, designed to replace leaking vacuum breakers and prevent water damage, ensuring a reliable and leakfree operation. Crafted from brass, this check valves offer exceptionally durability and corrosion resistance, featuring 1/2’’npt male threads for easy installation in your motorhomes plumbing system. For motorhomes owners, professional plumbers, and DIYer enthusiasts looking to maintain their campers trailers' freshwater systems with a efficient backflow prevention solution. Perfect for use in campers trailers, and motorhomes, this vacuum breaker valves is installed between the freshwater inlet and black tanks flusher, preventing contamination of the water supply during black tanks flushing. Ensures peace of mind on your travels by upgrading to this robusts antisiphon valves, maintaining a clean and healthy water system. Specifications: Component:Brass Size:Approx.67x70mm/2.64x2.76inch Part Number:571-VAC-CHK-A Color:Yellow Package Includes: 1pcs Vacuum Breaker Check Valves note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.