Regulating Valve Body

The regulating valve body is the primary structural component of a flow regulator that houses the valve seat, disc, stem, and other internal parts. It provides the pressure boundary for the fluid system, directs flow through the valve, and connects to piping via flanges or threaded connections. As part of the flow regulator assembly, it ensures proper alignment and operation of the control mechanism. This directory entry covers valve bodies intended for use in regulating valves, typically applied in industrial piping systems to control fluid flow. The body is designed to withstand system pressure and temperature while maintaining structural integrity. It is available in materials such as stainless steel, carbon steel, cast iron, and bronze, with body material grades ranging from WCB to CF8M per ASTM A216/A351. Nominal diameters range from 15 to 300 mm (ISO 6708), with a pressure rating of PN16 to PN40 (ISO 7005-1). Operating temperatures range from -40 to 85 °C, limited by seal material. Flow coefficients (Cv) range from 2.5 to 1200 US gal/min (IEC 60534-2-1), and leakage classes are IV to VI (IEC 60534-4). End connections include raised face to ring joint flanges (ASME B16.5), and face-to-face lengths range from 130 to 600 mm (ISO 5752). Weight varies from 5 to 150 kg depending on size and material. These values are reference ranges for directory purposes; actual specifications must be confirmed with the legal manufacturer or supplier for a specific model and application. The valve body is a component, not a standalone valve, and its selection depends on system requirements such as pressure, temperature, media, and piping standards. Verification of compliance with relevant standards is the responsibility of the purchaser.

The valve body serves as a pressure vessel that contains the fluid medium while providing a controlled pathway for flow regulation. It withstands system pressure and temperature while maintaining structural integrity to support the valve's opening, closing, and modulating functions through its internal geometry and connection points. The body's internal passages direct fluid flow, and its mounting surfaces ensure proper alignment of internal components. The body must be selected based on the operating pressure, temperature, and media compatibility, and it must be properly connected to the piping system to ensure leak-tight operation. Regular inspection for corrosion, erosion, or cracking is necessary to maintain safe operation.