JB/T 53036-1999
Check Valves - Product Quality Grading
止回阀 产品质量分等
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 产品的质量等级 → 4 试验与检验方法 → 5 抽样和评定方法 Foreword → 1 Scope → 2 Normative References → 3 Product Quality Grades → 4 Test and Inspection Methods → 5 Sampling and Evaluation Methods
Scope
This standard specifies the quality grades, test and inspection methods, sampling and grade evaluation methods for check valve products. This standard applies to check valve products specified in GB/T 12233, GB/T 12235, GB/T 12236, GB/T 13932 and JB/T 7746.
本标准规定了止回阀产品的质量等级、试验与检验方法、抽样和等级评定方法。 本标准适用于GB/T 12233、GB/T 12235、GB/T 12236、GB/T 13932 及JB/T 7746 规定的止回阀产品。
Normative References
Keywords
Application Summary AI generated
Valve manufacturers and quality inspection agencies use this standard to classify and evaluate the quality grades of check valve products. It helps producers determine whether their products meet qualified, first-class, or premium standards, guiding production improvements and factory inspections. This standard is crucial for ensuring the reliability and safety of check valves, especially in industries such as petroleum, chemical, and water treatment.
阀门制造企业和质量检验机构使用本标准来对止回阀产品进行质量等级划分和评定。它帮助生产商确定产品是否达到合格品、一等品或优等品标准，从而指导生产改进和出厂检验。该标准对于确保止回阀的可靠性和安全性至关重要，特别是在石油、化工、水处理等工业领域。
AI Summary AI generated
This standard specifies quality grades (qualified, first-class, premium), test and inspection methods, sampling, and grade evaluation for check valves. It applies to iron and steel check valves defined in multiple referenced standards. Key assessment items include shell test, seal tests (liquid and gas), casting quality, and cleanliness, with specific criteria varying by material and grade. Test methods reference GB/T 13927 and JB/T 9092. This standard provides a unified quality grading basis for the valve industry, helping to improve product reliability and market competitiveness.
本标准规定了止回阀产品的质量等级（合格品、一等品、优等品）、试验与检验方法、抽样和等级评定方法。适用于多种标准规定的铁制和钢制止回阀。各等级考核项目包括壳体试验、密封试验（液体和气体）、铸件质量和清洁度，具体指标因材质和等级而异。试验方法分别引用GB/T 13927和JB/T 9092。该标准为阀门行业提供了统一的质量分等依据，有助于提升产品可靠性和市场竞争力。
Key Sentences extracted from text
本标准规定了止回阀产品的质量等级、试验与检验方法、抽样和等级评定方法。
止回阀产品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。
铁制止回阀的壳体试验、液体密封试验、气体密封试验按GB/T 13927的规定进行；钢制止回阀的壳体试验、液体密封试验、气体密封试验按JB/T 9092 的规定进行。
止回阀内腔清洁度按JB/T 7748 的规定进行检查。
合格品、一等品和优等品的检测结果应达到相应质量等级的质量指标。
This standard specifies the quality grades, test and inspection methods, sampling and grade evaluation methods for check valve products.
Check valve products are divided into three grades: qualified product, first-class product, and premium product, based on their quality level and use value.
Shell test, liquid seal test, and gas seal test for iron check valves shall be conducted according to GB/T 13927; shell test, liquid seal test, and gas seal test for steel check valves shall be conducted according to JB/T 9092.
The internal cavity cleanliness of check valves shall be inspected according to JB/T 7748.
The test results for qualified product, first-class product, and premium product shall meet the quality indicators of the corresponding quality grade.
Standard Timeline
Changes from replaced version:
- 钢制阀门密封试验的允许渗漏率按修改后的JB/T 9092—1999《阀门的检验和试验》的要求作规定。
- The allowable leakage rate for steel valve seal tests is specified according to the revised JB/T 9092-1999 'Inspection and Test of Valves'.