quality material Made of PP material, this Sprayer Pressure Release Valve is resistant to deformation and built for durability. It provides reliable performance for longterm use in knapsack and garden sprayers. Improved efficiency and stability The pressure relief valve helps stabilize sprayer operation and can improve the working efficiency of knapsack sprayer systems by maintaining consistent performance during spraying tasks. Automatic deflation for safety The valve automatically deflates when the internal pressure exceeds a preset limit, effectively protecting the bottle body from overpressure and reducing the risk of damage. Easy to install and Simple to install or remove, this valve is designed to directly old or damaged air release valves to restore stability and maintain smooth spraying performance. Compatibility and use Fits standard knapsack sprayers and garden sprayers that use air release valves, enabling quick replacement to restore proper function. Suitable for regular spraying tasks where stable pressure and quick response are important. Typical use scenarios Replacing a worn valve on a garden knapsack sprayer used for pesticide or fertilizer applications, to restore consistent pressure and spraying performance. Routine maintenance of lawn and landscape sprayers to improve stability during extended spraying sessions. Greenhouse or nursery spraying where steady pressure and automatic venting help ensure even coverage and protect equipment from overpressure.