Válvulas de compuerta de acero inoxidable are used for isolation in chemical processing, oil and gas and other industrial pipework where the selected materials suit the fluid. For a project buyer, “stainless steel” is only the starting point. The body grade, recortar, La calificación de presión, connections and operator together define what is being supplied. This guide explains the main specification items to compare before requesting a quotation.
Materiales de carrocería y molduras.
Common stainless steel descriptions include 304, 316 y 316L, but an order should identify the actual material grade for each main part, including whether the body is cast or forged. Body and trim need not be the same material. Stem and seating materials are selected for the service and wear requirements. Stellite, Por ejemplo, is a cobalt-based hardfacing alloy family, not a stainless steel grade. If your valve list specifies trim materials, include them rather than describing the assembly only as “316 stainless steel”.
Clasificaciones de presión y temperatura
Válvulas de compuerta de acero inoxidable are supplied in different pressure classes and PN ratings. A Class number is a rating designation, not a fixed working pressure in psi. Use the applicable pressure-temperature data for the selected material and construction, and compare it with the project conditions. Cryogenic and high-temperature duties need suitable complete designs; a generic stainless steel description does not establish a single temperature range for every valve.
Finalizar conexión
Las válvulas de compuerta de acero inoxidable están disponibles con una variedad de conexiones finales para una fácil integración en los sistemas de tuberías.. Las conexiones finales comunes incluyen:
Extremo de brida: Las válvulas con extremos de brida están diseñadas para atornillarse o atornillarse a una brida coincidente en el sistema de tuberías..
Extremos de soldadura a tope: Estas válvulas tienen extremos biselados que se pueden soldar a tope directamente al sistema de tuberías..
Extremos para soldar: Los extremos para soldar por encaje están diseñados para soldarse a accesorios de tubería mediante una junta soldada por encaje..
Extremos roscados: Las válvulas con extremos roscados permiten un fácil enroscado en accesorios roscados.. For a flanged replacement, confirm the mating flange standard and facing as well as the valve size. For threaded ends, specify the thread form; a nominal inch size alone does not establish compatibility.
Estándares de diseño y certificaciones.
Project specifications may refer to ASME B16.34 for valve construction and pressure-temperature requirements, API 600 for its defined steel gate valve designs, or ISO 15761 for certain smaller steel valves. They have different scopes rather than being interchangeable labels. Additional requirements such as fire testing to an applicable standard or fugitive-emissions qualification to ISO 15848 should be agreed for the actual valve design. API 607 is a fire-test standard, not a general fire-protection approval. For cryogenic duty, agree the applicable service standard and test requirements before ordering.
Tipo de actuador
Las válvulas de compuerta de acero inoxidable pueden operarse manualmente o equiparse con diferentes tipos de actuadores., incluido:
Operador de volante: Utilice el volante para una operación manual sencilla.
Operadores de engranajes: Los operadores de engranajes brindan una mayor ventaja mecánica y permiten una operación manual más sencilla de válvulas grandes..
Actuadores neumáticos: Estos actuadores utilizan aire comprimido para abrir y cerrar válvulas., a menudo para operación remota o automatizada.
Actuadores electricos: Los actuadores eléctricos utilizan motores eléctricos para operar válvulas., generalmente controlado por un controlador lógico programable (SOCIEDAD ANÓNIMA) o un sistema de control distribuido (DCS).
Compare the valve specification and operating arrangement together. A manual isolation valve in an accessible line and an electrically operated valve on a remote pipe rack may need the same body material but different supporting equipment. Include the available power and control requirements where actuation forms part of the order.
Stainless Steel Gate Valve Options from Farpro
Nuestro Z40W and Z41W wedge gate valve page lists existing stainless steel configurations, including CF8 body and F304 stem material references. For electric operation, see the Z941W electric flanged gate valve. These product entries give you specific models to compare with the valve list, rather than starting from a broad material description.
Have a project specification ready? Send Farpro your valve enquiry with the size, cantidad, destination and any required material or connection standard. para un reemplazo, an existing model and nameplate photo can help us identify which details need checking before we quote. If some items are still undecided, tell us about the fluid and the job, and we can discuss the options with you.