Heavy-duty brass and stainless steel valves feature pressure regulation Built for commercial applications such as sports fields, these heavy-duty brass and stainless steel valves feature pressure regulation and are designed to withstand high-pressure applications. Available in 1", 1 1/4", 1 1/2", 2", 2 1/2" and 3". Internal downstream manual bleed keeps valve box dry and allows for manually setting pressure regulation. Pressure regulator can be installed as a service kit without draining the main line. Pressure regulates in electric and manual modes, serviceable under pressure. Standard, built-in Schrader-type valve for downstream pressure verification. Easily removable, selfflushing, 120-mesh, stainless steel filter screen. No external tubing for either electric or pressure regulating models. External manual bleed for system flushing.