Features: The rv40600 brass manual air relief valves ensures best pressure control for pool filter systems, featuring brass construction and seamlessly compatibility with filters. Engineered with a distinctive yellow black visual identifier and corrosion resistant metal component, this valves offers precise pressure adjustment and leak proof operation for efficient air release in filtration setups. Ideal for pool owners and professional maintenance technicians seeking reliable pressure regulation solution to safeguards filtration equipment from systems overpressure damage. Essential during seasonal pool maintenance checkups, filter systems upgrades, or emergency repairs when restoring proper pressure levels in filter assemblies. Its manual operation mechanism combines user friendly installation with plastic metal construction, designed to withstand continuous exposure to chlorinated water environments. Specifications: Material:Plastic + Metal Size: The size is as shown Weight:350g Package Includes: 1Pc Manual Air Relief valves note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color about the item.