The Netafim Wide Range Pressure Regulator is the only 1” regulator in the industry rated from 0.5 to 35 GPM, providing simplicity for contractors, architects and distributors. A rolling diaphragm and sealed regulating chamber provide consistent, high quality performance in any irrigation system. Chemical resistant, high strength ABS construction and stainless steel springs provide long-life and can be used in a variety of applications where chemicals or aggressive water may be present.