Definition of Valve Trim
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This post was last edited by Kedao Bi Continuity on 2023-7-7 at 13:49. The internal components generally refer to the sealing surfaces rather than the valve elements themselves; this is an issue that many customers often confuse. For example, ADNOC tends to use the materials of the internal components to define the materials of the valve elements. 1. Definition of API 600 2. Definition of API 623 3. API 6D-e25: API 6D does not define Trim, but it defines components for closure members (section 3.1.10). In the early days, 6D was referred to as an Obturator; it has now been changed to closure member. A part of a valve, such as a ball, flap, disc, gate, piston, or plug, located within the flow path to allow or prevent flow.
Valve internals usually refer to the sealing surfaces within a valve, rather than the closing element itself. This concept is often misunderstood; for example, ADNOC usually uses the inner component material to define the material of the valve’s moving parts. According to the definition in API standards: – API 600 defines internal components as those parts of a valve, such as balls, clamps, discs, gates, pistons, or plugs, which are located within the fluid flow path and are used to control flow. - API 623 also defines the internals, but does not specify the types of internals. - API 6D-e25 does not provide a specific definition for the internal components, but it does define the closure members. In earlier versions of 6D, it was called “Obturator”; it has now been renamed “closure member”. The closing element is a part of the valve that is used to allow or prevent the flow of fluid. In summary, valve internals generally refer to the components in a valve that are used to control flow, such as balls, discs, gates, etc. These internal components allow or prevent fluid flow by adjusting their position. .