Solo 4800185-P Sprayer Pressure Relief Valve for Models 454, 456 and 457

The Solo 4800185-P Sprayer Pressure Relief Valve for Models 454, 456, and 457 is an essential replacement part for sprayers. It is effortless to install and works perfectly, according to one customer review. However, some customers have reported that this part breaks frequently, and the actual design of the part might be faulty, leading to the need for Constant replacement. If you're careful not to pull hard on the valve when relieving pressure, the nob will not pull off, as reported by one customer. The product is perfect and is what another customer needed. Additionally, it works fine, only time will tell how well it will perform.