Durable long term use Made from PP material that is strong, sturdy and dependable. It resists deformation and is designed for long lasting performance in daily spraying tasks. Improved efficiency and time saving Pressure relief valve helps boost the working efficiency of knapsack sprayers, reducing downtime and keeping spraying tasks moving smoothly. Overpressure protection for the bottle The safety release valve automatically deflates when pressure exceeds a preset value, guarding the bottle body against overpressure damage. Easy installation and replacement Simple to install and disassemble, making it convenient to old or damaged air release valves on garden and knapsack sprayers. Compatibility and performance Designed for knapsack sprayers and garden sprayers, providing reliable pressure relief and safe operation during spraying tasks. Material: PP Function: Sprayer pressure release valve with automatic safety release Use scenarios Home garden maintenance: Use with a knapsack or garden sprayer to maintain steady pressure, protect the tank, and reduce refilling downtime during weed control or fertilizer application. Nursery or greenhouse spraying: Keeps spraying sessions efficient by preventing pressure fluctuations and enabling quick valve replacement if worn. Replacement in existing equipment: worn or damaged air release valves on compatible sprayers to restore performance and safety without major upgrades.