Descrição
Austenitic stainless steel industrial valve
304 Válvula borboleta tripla de aço inoxidável
A practical general-purpose stainless steel choice for non-marine process, água, food and utility service. The triple offset butterfly valve configuration is engineered for compact high-temperature or severe-service process isolation.
What is a 304 Válvula borboleta tripla de aço inoxidável?
UM 304 Stainless Steel Triple Offset Butterfly Valve combines a chromium-nickel austenitic stainless steel family offering general corrosion resistance, cleanability and broad fabrication experience with a quarter-turn metal-seated design using three geometric offsets to reduce seat rubbing and support severe-service isolation.
304 is often the commercial material name, while pressure-containing cast bodies are normally ordered by a casting grade such as CF8 or CF3 rather than simply as 304. Seat-stack design, pressure direction, leakage class, shaft loading, thermal cycling and actuator torque are configuration-specific.
304 Stainless Steel Triple Offset Butterfly Valve specifications
| Produto | 304 Válvula borboleta tripla de aço inoxidável |
|---|---|
| Construção de válvula | Triple-eccentric metal-seated butterfly valve in wafer, lug, double-flanged or butt-weld body pattern |
| Material nominal | 304 Aço inoxidável |
| NÓS / Uma referência | UNS S30400/S30403; EN 1.4301/1.4307 |
| Formulários de produto | Wrought ASTM A182 F304/F304L; elenco ASTM A351 CF8/CF3; exact component specification stated on order |
| Padrões de projeto | API 609 e ASME B16.34; EN 593 option for applicable European projects |
| Teste de pressão | API 598, EN 12266-1 or project-specified shell and seat testing |
| Classificação de pressão | Classificação ASME Classe ou PN verificada em relação ao material exato, tamanho, temperatura de construção e projeto |
| Terminar conexões | Wafer, lug, double-flanged or butt-weld body patterns according to design |
| Operação | Gearbox, pneumatic, electric or hydraulic actuator |
| Documentação | EN 10204 3.1 registros materiais, relatório de teste de pressão, Desenho GA e registros de inspeção do projeto conforme solicitado |
Este é um produto de consulta projetado, não é uma especificação de estoque universal. A disponibilidade final depende do tamanho da válvula, classe de pressão, forma material, aparar, sistema de assento, operador, quantidade e edição de código necessária.
304 Stainless Steel material selection
| Ponto de seleção | Orientação de engenharia |
|---|---|
| Perfil de materiais | a chromium-nickel austenitic stainless steel family offering general corrosion resistance, cleanability and broad fabrication experience |
| Por que foi selecionado | Broad availability, good fabrication and useful corrosion resistance in many mild industrial environments. |
| Serviço típico | Fresh water, food and beverage, non-chloride chemicals, clean utilities and general process duties. |
| Limitações a verificar | Chloride pitting, crevice corrosion and stress-corrosion cracking must be assessed; it is not the default choice for seawater or aggressive reducing acids. |
| Rota de especificação | Wrought ASTM A182 F304/F304L; elenco ASTM A351 CF8/CF3; exact component specification stated on order |
| Verificação | MTC review, heat traceability and PMI when required; low-carbon grade confirmed where welding and sensitization control matter. |
Triple Offset Butterfly Valve design and standards
API 609
Common design basis for butterfly valves; category, body pattern, seat design and edition must be identified.
ASME B16.34
Pressure-temperature and general valve design requirements where applicable.
API 598 / EN 12266-1
Shell and seat testing selected for the applicable project and market.
API 607 / ISO 10497
Fire-safe qualification applies only to the exact seat, seal and valve configuration.
Seal ring, seat stack, pressure direction, shaft/packing system, bearing loads and actuator safety factor must be reviewed as a complete package.
À prova de fogo, emissão fugitiva, serviço azedo, oxigênio, criogênico, Os requisitos de cloro e PED aplicam-se somente quando explicitamente definidos e suportados para a configuração exata oferecida.
Aplicações típicas
| Indústria | Contexto de serviço material | Foco na seleção da válvula |
|---|---|---|
| Alimentos e bebidas | Clean water, product transfer and utility systems with compatible cleaning chemistry | Pressure direction, leakage class, metal-seat design, temperatura, torque and fire-safe/emissions qualification |
| Tratamento de água | Fresh-water and low-chloride treatment stages | Pressure direction, leakage class, metal-seat design, temperatura, torque and fire-safe/emissions qualification |
| General chemical | Mild oxidizing and non-halide process media after compatibility review | Pressure direction, leakage class, metal-seat design, temperatura, torque and fire-safe/emissions qualification |
| Building and utility | Clean utility, HVAC and non-marine industrial services | Pressure direction, leakage class, metal-seat design, temperatura, torque and fire-safe/emissions qualification |
Os exemplos de aplicação não são uma aprovação de corrosão ou de projeto. O usuário final deve verificar a química do processo, contaminantes, pressão, temperatura, velocidade, ciclismo, emissões e requisitos regulatórios.
Qualidade, testes e rastreabilidade
Rastreabilidade do número de calor e EN 10204 3.1 registros correspondentes às especificações do componente solicitado.
MTC review, heat traceability and PMI when required; low-carbon grade confirmed where welding and sensitization control matter.
API 598, EN 12266-1 or project-specified shell and seat testing, com critérios de aceitação e vazamento indicados no pedido.
Desenho GA, dimensões, marcação, operação, teste de pressão e registros específicos de EQM/terceiros.
Lista de verificação de RFQ
- Padrão de projeto de válvula e edição obrigatória
- Tamanho nominal e classe ASME ou classificação PN
- Especificações exatas do material para limite de pressão, aparar, assentos, embalagem e aparafusamento
- Body pattern, face-to-face, pressure direction, leakage class, seal-ring design and actuation
- End connection, facing and face-to-face requirement
- Fluid composition, concentração, contaminants and solids
- Design and operating pressure/temperature
- PMI, testes de corrosão, EQM, witnessing and document requirements
Perguntas frequentes
Is CF8 the same as 304 aço inoxidável?
CF8 is a cast austenitic stainless steel commonly associated with wrought 304 química, but casting and wrought specifications have different requirements. The purchase order should state the governing ASTM grade.
When should 316 be selected instead of 304?
316/CF8M is often considered when molybdenum is beneficial for chloride pitting resistance, but neither grade is automatically suitable for seawater or every chemical service.
Can 304L components be welded?
304L is widely used for welded fabrication because of its lower carbon limit, but the approved welding procedure, filler metal, heat input and post-fabrication condition still control performance.
What are the three offsets?
They separate the shaft from the seat and body centerlines and add a conical sealing geometry, allowing rapid seat disengagement during opening.
Is every triple offset butterfly valve bidirectional?
Não. Some designs have a preferred pressure direction or different leakage capability by direction. Confirm the tested performance of the exact configuration.
Pode 304 Stainless Steel be used for every component in this triple offset butterfly valve?
Not automatically. Pressure-boundary, aparar, stem or shaft, seating, embalagem, gasket and bolting materials have different mechanical and corrosion duties. The complete bill of materials must be engineered for the service.
Related 304 Stainless Steel valve products
Need a broader comparison? View the general stainless steel and alloy butterfly valves guide ou navegue por todos Válvulas Borboleta.
Request a 304 Stainless Steel Triple Offset Butterfly Valve quotation
Envie a especificação da válvula, classes exatas de materiais, tamanho, classe de pressão, condições de operação, requisitos de quantidade e inspeção para revisão técnica.
