These air release valves ensure performance in various systems This replacement part includes a pressure gauge, pressure gauge plug, O-rings, clip and tape, making it an essential tool for maintaining performance in any filtration facility Ideal for industrial maintenance personnel, engineers and professional management of complex systems to ensure operation and Improves the efficiency of your pool systems with our manual air release valves, which feature a pressure gauge for and control Perfect for use in factory line systems, HVAC equipment and water treatment plants where effective air discharge is important to system efficiency, Manufacturer: DIEKE