专为关键压力保护设计的工业安全阀
ZOBAI supplies industrial safety valves for boilers, pressure vessels, process pipelines, compressor skids, LNG and LPG systems, refinery units, chemical processing equipment, and hygienic process lines. Across the full product portfolio, available ranges can cover set pressures from 0.6 MPa to 42.0 MPa, service temperatures from −196°C to +570°C, and nominal sizes from DN10 to DN600. Actual availability depends on the valve series, design standard, material, operating medium, connection type, and project requirements. Engineering review can be aligned with ASME Section VIII, API 520, API 526, API 527, EN ISO 4126, and applicable CE/PED project requirements. This allows buyers, EPC contractors, equipment manufacturers, and plant engineers to evaluate required relieving capacity, set pressure, back pressure conditions, material compatibility, connection standards, testing requirements, and documentation scope before final valve selection.
- 基于公认的ASME、API和ISO超压保护原则进行安全阀定径及产品类别审查
- 材料选项包括WCB、WC6、WC9、CF8、CF8M、316L、双相不锈钢及特定镍合金,具体取决于工作介质、温度、压力及腐蚀条件
- 测试选项包括整定压力验证、密封面泄漏测试、壳体水压测试、气密性测试,以及按需进行的氦气泄漏测试
申请安全阀评审
提供介质、整定压力、工作压力、温度、口径、连接方式、标准以及任何可用的图纸或数据表,以便尽早筛选正确的阀门类别并审查项目限制条件。.
*为加快审核,建议提供:应用工况、介质、整定压力、工作压力、温度、背压、尺寸、连接方式、标准以及数据表或图纸。.
为什么选择ZOBAI
为项目审核而设计,而非仅浏览目录
在安全阀工作中,难点通常不在于找到阀体,而在于确认所选型号在实际工况变量下是否仍能正常工作:整定压力、允许超压、背压、流体相态、腐蚀性、温度、连接等级、维护通道以及停机风险。ZOBAI围绕这些变量而非通用型号列表来组织产品审核。这种方法有助于工程团队更快地比较实际选项,减少错误替换,并促进设计、采购和工厂维护之间的清晰沟通。.
产品分类
浏览安全阀产品分类
探索ZOBAI主要安全阀类别,涵盖连续保护、标准弹簧载荷式、先导式泄压、波纹管平衡式、卫生级工艺管线及夹套加热应用。本部分帮助采购方和工程师从产品浏览快速进入技术评估与询价阶段。.
切换式与双联安全阀

弹簧式安全阀

先导式安全阀

波纹管平衡式安全阀

卫生级安全阀

夹套式安全阀

标准、材料与工况条件
选型始于运行数据,而非产品图片
安全阀应首先根据使用工况范围进行筛选。典型的项目输入包括介质相态、整定压力、泄放压力、背压、操作温度、所需的启闭压差特性、腐蚀裕量、端部连接方式以及安装限制条件。审查过程中常参考的标准路径包括:针对压力设备的 ASME Section VIII、用于定径逻辑和阀门几何结构的 API 520 和 API 526、适用时用于阀座密封性验证的 API 527、针对安全阀原理的 EN ISO 4126,以及针对需要欧洲合规文件的项目所采用的 CE/PED 文件流程。根据工况不同,工程师还可能审查法兰标准(如 ASME B16.5 或 EN 1092-1)、螺纹标准(如 NPT 或 BSPT),以及材料选择(如 316L、CF8M、WC9、双相不锈钢或镍合金内件)。典型应用包括蒸汽集管、锅炉出口、压缩机撬装、LPG 撬装、炼油厂工艺管线、真空接收器、CIP 系统以及加热流体回路。实际目标不仅仅是泄压,还包括避免因阀门类型与实际流体条件不匹配而导致的泄漏、振颤、腐蚀引起的阀座损坏以及非计划停机。.
制造能力
关键特性在部件层面受控
安全阀的性能取决于目录摘要中容易忽略的细节:喷嘴与阀座同心度、弹簧范围控制、阀瓣与阀座表面光洁度、阀杆导向、阀盖密封、波纹管完整性以及连接精度。ZOBAI 的生产流程围绕这些控制点组织。根据系列不同,这可能包括阀体和阀盖加工、阀座表面精加工、弹簧匹配、内件组装、卫生型管线的卫生级表面控制,以及加热介质服务的夹套通道完整性检查。对于非标准应用,工程关注通常集中在内件材料、弹簧校准范围、连接规格和测试范围上,因为这些项目最可能影响使用性能和交货时间。.
质量保证
测试范围与实际压力保护风险对齐
安全阀的质量控制不能止步于尺寸检验。真正重要的检查是那些影响开启、回座、密封以及长期运行稳定性的检查。根据类别和项目要求,测试范围可包括来料审查、机加工检验、装配验证、整定压力校准、回座行为审查、适用时按 API 527 进行的密封泄漏验证、1.5 倍设计压力的水压壳体试验、气密性试验,以及针对真空、洁净气体或高密封性应用(如规定)的氦质谱检漏。平衡式设计可能还需要背压功能审查,而卫生级阀门可能需要检查湿接触表面的光洁度和可清洁性。这为工程团队提供了更清晰的产品评估和内部审批依据。.
证书与文件
为技术审查和合规工作流程准备的文件
对于许多项目而言,文档资料与硬件本身同样决定审批进度。根据阀门类别和项目要求,文档支持可包括总布置图、技术数据表、材料测试报告、检验与试验计划、压力试验记录、整定压力证书、可追溯性文件以及与订单范围相关的其他支持性记录。如有需要,还可围绕CE/PED或其他项目特定合规框架准备文档路径。这在实践中很重要,因为采购、工程、质量和最终用户的审批往往在不同时间线上进行。完整且结构化的文档包可减少审查延误,并便于验证所选阀门是否符合预期工况。.
精选系列
精选安全阀系列
我们的工艺
How Safety Valve Projects Move Forward
Application Input
The starting point is service data: medium, set pressure, operating pressure, temperature, back pressure, connection type, valve size, and any project-specific standard or document requirement.
Category Screening
The valve architecture is screened against the duty. This is where spring loaded, pilot operated, bellows balanced, sanitary, jacketed, or changeover options are separated based on the actual service condition.
Technical Confirmation
Key technical points are reviewed before release, including material selection, end connection, pressure range, back pressure influence, sanitary or heated-media requirements, and any requested test scope.
Manufacture and Test
The valve proceeds through machining, assembly, calibration, and the agreed inspection and testing sequence appropriate to the product category and order scope.
Documentation and Delivery
The final stage includes the agreed technical files, traceability records, test documents, and shipping release so the valve can move into project execution with fewer approval issues.

Category-Based Quotation
Category-Based Quotation
- Based on valve category and service condition
- Covers spring loaded, pilot operated, sanitary, and more
- Helps narrow product direction before RFQ
- Suitable for early-stage project review
Documentation Support
Documentation Support
- Material traceability and inspection documents
- Pressure test and related technical records
- Helps with internal review and project submission
- Supports smoother approval communication
Technical Review Support
Technical Review Support
- Review set pressure, temperature, and medium
- Confirm size, connection, and valve type
- Support back pressure and installation discussion
- Helps reduce mismatch before quotation
Project RFQ Response
Project RFQ Response
- Aligned with project requirements and product category
- Easier communication for technical and commercial teams
- Suitable for distributors, OEMs, and industrial buyers
- Designed to move faster from inquiry to quotation
SELECTION INPUTS
What Usually Determines Safety Valve Selection
In industrial service, a safety valve is not selected from price alone. Engineering teams usually narrow the correct direction by checking four groups of variables: process medium, pressure window, connection and material class, and the test or documentation scope required by the project. These inputs have more impact on suitability than brand claims or generic product labels.
PROJECT SUPPORT
Support Functions Used Across Safety Valve Projects
PHOTO GALLERY
Inside ZOBAI Safety Valve Manufacturing
PROJECT FEEDBACK
What Buyers and Engineers Looked For in Practice
“We were reviewing a back pressure application and needed more than a catalog comparison. The bellows balanced direction was explained clearly, and the documentation package made internal review much easier.”
“Our steam project had a narrow shutdown window, so the technical questions mattered as much as the valve itself. The discussion around set pressure, temperature, and connection details was practical and useful.”
“For hygienic service, the key issue was not just pressure protection but cleanability and material suitability. The sanitary valve discussion was much closer to our real process requirements than the generic offers we received elsewhere.”
“We were looking at a higher-pressure application and needed the supplier to understand the difference between product type and project requirement. The communication was technical enough to keep our engineering review moving.”
常见问题
Safety Valve Questions, Answered
选择安全阀前应准备哪些项目数据?
评审内容至少应包括介质、相态、整定压力、工作压力、泄放工况、背压、温度、阀门尺寸、连接形式、管道标准以及任何材质或文件要求。如能提供图纸、数据表或工艺说明,通常可缩短筛选流程,并降低选错类别的风险。.
弹簧式、先导式和波纹管平衡式安全阀有何区别?
弹簧式设计是许多一般工业工况的标准起点。在需要更紧密的密封和接近整定压力时更稳定的行为时,尤其是在高压系统中,常会考虑先导式设计。当积聚背压或可变背压可能干扰传统弹簧式安全阀的开启或回座行为时,则采用波纹管平衡式设计。正确的选择取决于操作条件,而非单一特性。.
安全阀定径和审查过程中通常参考哪些标准?
项目通常参考 ASME Section VIII 作为压力设备的设计依据,API 520 用于定径计算逻辑,API 526 用于标准阀门流道孔径及尺寸规范,API 527 用于适用情况下的阀座密封性验证,以及 EN ISO 4126 作为安全阀设计原则。连接端标准也可能根据管道系统的要求,采用 ASME B16.5 或 EN 1092-1。.
标准安全阀能否用于卫生级、加热介质或真空工况?
并非总是如此。卫生级工艺管线可能需要可清洁的内部几何结构以及316L或类似不锈钢材质的接液部件。对于加热或粘性介质,可能需要夹套结构,以防止温度损失影响可操作性。真空或负压工况可能需要专门针对低压差行为设计的阀门。应根据实际工况范围来选择类别,而非将其视为标准替代品。.
项目审批通常需要哪些文件?
典型的文件要求可能包括技术数据表、总布置图、材料试验报告、压力试验记录、整定压力证书、检验文件、可追溯性记录以及(如需要)合规相关文件。具体文件包通常取决于项目标准、客户审批流程以及工况的关键性。.
Ready to Review Your Safety Valve Requirement?
Share the service data first. Medium, pressure window, temperature, back pressure, connection, material, and document expectations usually determine the correct valve direction much faster than a generic product request. ZOBAI supports category screening, technical review, and project documentation for industrial safety valve applications across steam, gas, liquid, sanitary, and heated-media service.
- Category-Based Product Review
- Technical and Documentation Support
- Structured for Industrial Project Workflows
