GB/T 18691.3-2011 in English
SUPERSEDEDAgricultural irrigation equipment—Irrigation valves—Part 3:Check valves
- Issued on:2011-05-12
- Implemented on:2011-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
《GB/T 18691.3-2011农业灌溉设备 灌溉阀 第3部分：止回阀》由TC201（全国农业机械标准化技术委员会）归口，TC201SC4（全国农业机械标准化技术委员会排灌设备和系统分会）执行，主管部门为中国机械工业联合会。
Scope
This part of GB/T 18691 specifies the design requirements, performance requirements, conformity assessment, marking and packaging of check valves. This section applies to irrigation systems where the water temperature does not exceed 60°C and the water may contain certain types and concentrations of fertilizers or chemicals commonly used in agriculture. This section applies to hydraulically driven irrigation check valves with a nominal size not less than DN15. The design working state of the check valve is fully open and fully closed, but it can also work for a long time in any intermediate state.
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