The 25 PSI pressure regulator is engineered for drip and sprinkler applications where controlled low pressure is important for optimum performance. It is available in 3/4-in. female hose thread (FHT), female pipe thread (FHT), and professional versions. It reduces dynamic pressure to 25 PSI while allowing you to maintain up to 5 GPM of flow. For dirty water, we recommend the 3-in-1 drip filter pressure regulator which cleans the water before passing it through the filter. The pressure regulator is compatible with controllers and valves from Orbit, Hydro-Rain, and other major brands. We recommend B-hyve controllers for optimum water conservation. For outdoor use with cold water only.