JB/T 51231-1999
Hand Pumps - Product Quality Grading (Internal Use)
手动泵 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量等级指标 → 4 试验方法 → 5 检验规则 Foreword → 1 Scope → 2 Normative References → 3 Quality Grade Indicators → 4 Test Methods → 5 Inspection Rules
Scope
This standard specifies the quality grade indicators, inspection test methods, and inspection rules for hand pump products. This standard applies to piston pumps, diaphragm pumps, and screw pumps (collectively referred to as hand pumps, hereinafter referred to as pumps) that pump normal temperature clean water and are powered by human force. Other types of human-powered pumps may also refer to this standard for implementation.
本标准规定了手动泵产品的质量等级指标、检测试验方法和检验规则。 本标准适用于抽送常温清水，以人力为动力的活塞泵、隔膜泵及螺杆泵（统称手动泵，以下简称泵）。其它型式的人力泵也可参照执行。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection agencies of hand pumps use this standard to grade and inspect product quality. It helps determine whether products meet qualified or first-class levels, ensuring performance and reliability requirements are satisfied. This standard is important for regulating the hand pump market and improving product quality.
手动泵的制造商和质检机构使用本标准来对产品进行质量分级和检验。它帮助确定产品是否达到合格品或一等品等级，确保产品性能和可靠性满足要求。该标准对于规范手动泵市场、提升产品质量具有重要意义。
AI Summary AI generated
This standard specifies quality grade indicators, test methods, and inspection rules for hand pumps (piston, diaphragm, and screw pumps). Products are classified as qualified or first-class, with performance indicators including flow rate, head, volumetric efficiency, and overall efficiency, and reliability requirements for mean time to first failure. Test methods reference related standards, and inspection rules adopt GB/T 2828 sampling plans, with nonconformities categorized as A, B, or C. The standard applies to human-powered pumps for normal temperature clean water, and other human-powered pumps may refer to it.
本标准规定了手动泵（活塞泵、隔膜泵、螺杆泵）的质量等级指标、试验方法和检验规则。产品分为合格品和一等品，性能指标包括流量、扬程、容积效率和总效率，可靠性要求为平均首次故障前工作时间。试验方法引用相关标准，检验规则采用GB/T 2828抽样方案，不合格项目按A、B、C三类分类。标准适用于抽送常温清水的人力泵，其他人力泵可参照执行。
Key Sentences extracted from text
本标准规定了手动泵产品的质量等级指标、检测试验方法和检验规则。
按泵产品的技术水平和质量水平，分为合格品、一等品。
泵的耐压和密封试验应符合JB/T 7876.2—1999中3.17的规定。
制造厂应在各自的试验基地或在用户地点通过测试确定产品的首次故障前平均工作时间，并编写试验报告。
被检查的项目凡不符合本标准的规定均称为不合格。按其对产品质量的影响程度分为A、B、C三类不合格。
This standard specifies the quality grade indicators, inspection test methods, and inspection rules for hand pump products.
According to the technical level and quality level of pump products, they are divided into qualified products and first-class products.
The pressure resistance and sealing test of the pump shall comply with the provisions of 3.17 in JB/T 7876.2—1999.
The manufacturer shall determine the mean time to first failure of the product through tests at its own test base or at the user's site, and prepare a test report.
Any inspected item that does not conform to the provisions of this standard is called a nonconformity. According to its degree of impact on product quality, it is divided into three categories: A, B, and C nonconformities.
Standard Timeline
Changes from replaced version:
- 将原三项标准合并为一项
- 去掉了“总使用寿命”考核要求
- 重新划分了不合格项目分类，并相应地调整了抽样方案
- Merged the original three standards into one
- Removed the 'total service life' assessment requirement
- Reclassified nonconformity categories and adjusted the sampling plan accordingly