行业组件数据 · 2026

阀杆联轴器

Precision coupling connecting actuator to valve stem in sterile diaphragm valves for pharmaceutical applications.

技术定义与适配语境
典型 阀杆联轴器 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。

A critical mechanical component in pharmaceutical-grade sterile diaphragm valve actuators that transmits torque from the actuator to the valve stem while maintaining absolute sterility and preventing contamination. It ensures precise alignment and smooth operation in aseptic processing environments.

组件规格

定义
A critical mechanical component in pharmaceutical-grade sterile diaphragm valve actuators that transmits torque from the actuator to the valve stem while maintaining absolute sterility and preventing contamination. It ensures precise alignment and smooth operation in aseptic processing environments.
工作原理
The stem coupling operates by transmitting rotational force from the actuator motor to the valve stem through a secure mechanical connection, typically using splines, keys, or clamp mechanisms. It maintains a hermetic seal to prevent microbial ingress while allowing controlled movement for valve opening/closing.
材料
316L stainless steel (ASTM A276)electropolished to Ra ≤ 0.4 μmwith optional PTFE or EPDM sealing elements. Materials comply with FDA 21 CFR 177USP Class VIand EHEDG standards.
Surface Finish
Ra ≤ 0.4 μm
Connection Type
Spline/D-clamp
Pressure Rating
10 bar maximum
Torque Capacity
5-50 Nm
Sterility Assurance
SIP/CIP compatible
Operating Temperature
-20°C to 150°C
标准
ISO 15848DIN 3230ASME BPEFDA cGMP

行业分类与别名

阀杆联轴器 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

Seal degradation from aggressive CIP chemicals->Sterility breach and product contamination->Use chemically resistant seals (FFKM) and regular integrity testing
Misalignment during installation->Increased wear and torque transmission failure->Implement precision alignment tools and torque-controlled installation procedures

工业生态与工程逻辑

0
Microbial contamination due to seal failure
1
Misalignment causing valve leakage
2
Material fatigue under cyclic loading
3
Incompatibility with cleaning agents

合规与检测

tolerance
±0.05 mm dimensional, Ra ≤ 0.4 μm surface finish
test method
Helium leak test < 1×10⁻⁹ mbar·L/s, bacterial challenge testing per ASTM F838

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 makes pharmaceutical stem couplings different from industrial versions?

Pharmaceutical versions feature electropolished 316L stainless steel, crevice-free designs, and validation documentation for sterility assurance, unlike industrial couplings which prioritize cost over contamination control.

How often should stem couplings be replaced in sterile service?

Typically every 3-5 years or 10,000 cycles, but always per manufacturer validation and visual inspection for wear, corrosion, or seal degradation.

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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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URN:CNFX:ME:UNIT:STEM_COUPLING