Designed for use with gas distribution systems in light to medium flow applications, with a maximum inlet pressure of 350 PSIG. NOT FOR USE ON CYLINDERS. Body and housing cap are machined from class “A” brass bar stock Single stage construction Stem type seat assembly for more reliable performance Delrin cap bushing for smooth adjustments 2" gauge for easy reading 2" diaphragm Weight: 2 lbs Conforms to CGA E-4 standard for gas pressure regulators