[High-Quality Construction]Crafted from plastic, the A10-3050 Vacuum Breaker Check Valve features a thickened frosted design at the center for enhanced durability. The valve's spring supports a nominal pressure of 125 PSI, while the rubber ball core ensures quiet operation and effective water isolation. [Technical Specifications]This check valve boasts a nominal pressure (PN) of 125 PSI and -designed inlet/outlet with a common diameter () of 1/2 inch, ensuring compatibility with standard RV black tank systems and efficient water flow management. [User-Friendly Installation]Easily install the A10-3050 by removing the old valve, aligning the new one according to the 'FLOW' direction, and connecting it to your pipeline. it's positioned about 6 inches above the flusher and vertically installed for optimal performance. [Broad Compatibility]Designed to replace the 571-VAC-CHK-A model, this vacuum breaker check valve fits various RV models including for Montana Mountaineer, Grand Design Reflection, and more. your system's nominal diameter is 1/2 inch for and function. The actual product may have slight color difference or difference, which not affect the use Colour:Transparent Material:plastic Package Contents: 1 x Vacuum Breaker Check Valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.