Technical Specifications Category Specification Model Type 99H-901 Type Piston-Operated, Pilot-Based Pressure Reducing Regulator Service Natural Gas, Air, Inert Gases, Steam Pilot Type Internal, Self-Actuated (defined by the "-901" suffix). Body Size & Orifice High Capacity ("H" designation). Specific size (e.g., 2", 3") is defined by the full order code. End Connections Flanged (ANSI Class 150, 300, or higher). Outlet Pressure Range Defined by the "-901" pilot. This pilot is calibrated for a specific, field-adjustable range. Example ranges could be 5-25 psig or 20-60 psig. The exact range must be confirmed from the factory data sheet. Maximum Inlet Pressure Suitable for very high pressures, often up to 400 to 1440 psig, depending on the body class. Droop Performance Excellent (low droop) due to the pilot-operated design. Body Materials Carbon Steel (WCB) standard; other alloys available. Piston Ring Material Glass-Filled Teflon or similar for low friction and long life.

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