JB/T 53170-1999
Spring Direct Loaded Safety Valves - Product Quality Grading
弹簧直接载荷式安全阀 产品质量分等
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量等级 → 4 试验与检验方法 → 5 抽样和评定方法 Foreword → 1 Scope → 2 Normative References → 3 Quality Grades → 4 Test and Inspection Methods → 5 Sampling and Evaluation Methods
Scope
This standard specifies the quality grades, test methods, and sampling evaluation methods for spring direct loaded safety valves (hereinafter referred to as safety valves). This standard applies to safety valves specified in GB/T 12243.
本标准规定了弹簧直接载荷式安全阀（以下简称安全阀）的质量等级、试验方法和抽样评定方法。本标准适用于GB/T 12243 规定的安全阀。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection agencies use this standard to grade and test spring direct loaded safety valves. It defines three quality levels—qualified, first-class, and superior—to help users select products with appropriate quality. This standard is critical for ensuring the reliability and safety of safety valves in boilers, pressure vessels, and other equipment.
安全阀制造商和质检机构使用本标准来对弹簧直接载荷式安全阀进行质量分级和检验。它通过设定合格品、一等品和优等品三个等级，帮助用户选择合适质量水平的产品。该标准对于确保安全阀在锅炉、压力容器等设备中的可靠性和安全性至关重要。
AI Summary AI generated
This standard JB/T 53170-1999 specifies product quality grading requirements for spring direct loaded safety valves, including three grades: qualified, first-class, and superior. It covers quality grade classification, test methods (such as shell test and sealing performance test), and sampling evaluation methods. Key technical indicators include set pressure deviation, blowdown pressure difference, operational repeatability, and internal cleanliness. The standard applies to safety valves specified in GB/T 12243 and provides a basis for quality control and user selection of safety valves.
本标准JB/T 53170-1999规定了弹簧直接载荷式安全阀的产品质量分等要求，包括合格品、一等品和优等品三个等级。标准涵盖了质量等级划分、试验方法（如壳体试验、密封性能试验）和抽样评定方法。主要技术指标包括整定压力偏差、启闭压差、动作重复性、内腔清洁度等。该标准适用于GB/T 12243规定的安全阀，为安全阀的质量控制和用户选型提供了依据。
Key Sentences extracted from text
本标准规定了弹簧直接载荷式安全阀（以下简称安全阀）的质量等级、试验方法和抽样评定方法。
安全阀根据其质量水平和使用价值分为合格品、一等品和优等品三个等级。
安全阀除符合GB/T 12243 规定外，各等级的考核项目、指标要求还应按表1 和表2 的规定。
各项性能试验按GB/T 12241 和GB/T 12242 的规定进行。
采取从生产厂经质量检验部门检验合格的库存产品中随机抽取的方法，或从已供给用户未使用过但保存完好的产品中随机抽取。
This standard specifies the quality grades, test methods, and sampling evaluation methods for spring direct loaded safety valves (hereinafter referred to as safety valves).
Safety valves are classified into three grades: qualified product, first-class product, and superior product, based on their quality level and use value.
In addition to complying with GB/T 12243, the assessment items and indicator requirements for each grade shall also comply with the provisions of Table 1 and Table 2.
All performance tests shall be conducted in accordance with the provisions of GB/T 12241 and GB/T 12242.
Sampling shall be carried out by random selection from the manufacturer's inventory that has passed inspection by the quality inspection department, or from products that have been supplied to users but are unused and well-preserved.
Standard Timeline
Changes from replaced version:
- 在标准格式、文字叙述、代号及名称等方面作了修改
- 将开启压力pk改为整定压力ps
- 增加了壳体试验和清洁度两项考核指标
- Modifications were made in standard format, wording, symbols, and names.
- The opening pressure pk was changed to set pressure ps.
- Two assessment items, shell test and cleanliness, were added.