行业组件数据 · 2026

阀盖法兰

A bonnet flange is a critical sealing component in valve assemblies that connects the valve body to the bonnet, ensuring pressure containment and operational integrity.

技术定义与适配语境
典型 阀盖法兰 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

The bonnet flange is a precision-machined flange component that forms the interface between the valve body and bonnet in industrial valves. It provides a secure, leak-proof connection through bolting and gasket sealing, allowing for maintenance access to internal valve components while maintaining system pressure integrity. This component is essential for pressure boundary containment in various valve types including gate, globe, and check valves.

组件规格

定义
The bonnet flange is a precision-machined flange component that forms the interface between the valve body and bonnet in industrial valves. It provides a secure, leak-proof connection through bolting and gasket sealing, allowing for maintenance access to internal valve components while maintaining system pressure integrity. This component is essential for pressure boundary containment in various valve types including gate, globe, and check valves.
工作原理
The bonnet flange operates on the principle of bolted joint integrity and gasket compression sealing. When properly torqued, the flange creates a uniform compressive force on the gasket material, forming a pressure-tight seal that prevents fluid leakage while allowing for disassembly when maintenance is required. The flange distributes bolt loads evenly across the sealing surface to maintain consistent gasket compression under varying pressure and temperature conditions.
材料
Common materials include ASTM A105 carbon steelASTM A182 F304/F316 stainless steelASTM A350 LF2 low-temperature carbon steeland ASTM A694 F60 high-yield strength steel. Material selection depends on service conditions including pressuretemperatureand fluid compatibility.
Face Type
Raised face (RF), Ring-type joint (RTJ), Flat face (FF)
Surface Finish
125-250 µin Ra for gasket seating surfaces
Pressure Rating
Class 150 to Class 2500
Temperature Range
-50°C to 540°C
Bolt Circle Diameter
As per ASME B16.5 standards
标准
ASME B16.5ASME B16.47ISO 7005-1DIN 2633

行业分类与别名

阀盖法兰 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Insufficient bolt torque during assembly->Gasket compression loss leading to fluid leakage->Implement calibrated torque procedures and periodic bolt retorquing schedules
Thermal cycling causing differential expansion->Flange warpage and loss of sealing integrity->Use appropriate flange materials with matching thermal expansion coefficients and consider flexible gasket designs

工业生态与工程逻辑

0
Gasket blowout under overpressure conditions
1
Bolt relaxation leading to joint leakage
2
Corrosion at flange-gasket interface
3
Improper bolt torque causing uneven gasket compression

合规与检测

tolerance
Flange dimensions per ASME B16.5 Table 5 with face flatness within 0.8mm across diameter
test method
Hydrostatic pressure testing per API 598 or ISO 5208 standards with visual inspection for leaks

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the primary function of a bonnet flange in valve assemblies?

The primary function is to provide a secure, pressure-tight connection between the valve body and bonnet while allowing for maintenance access to internal components.

How does gasket selection affect bonnet flange performance?

Gasket selection is critical as it must match the flange material, surface finish, and service conditions to ensure proper compression and sealing under varying pressure and temperature cycles.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

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初步技术归类
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请求制造能力信息: 阀盖法兰

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URN:CNFX:ME:UNIT:BONNET_FLANGE