Standard No.:	GB/T 18688-2012
English Name:	Agricultural irrigation equipment—Pressure losses in irrigation valves—Test methed
Chinese Name:	农业灌溉设备 灌溉阀的压力损失 试验方法
Chinese Classification:	B91    Farming machinery and tools
Professional Classification:	GB    National Standard
ICS Classification:	65.060.35 65.060.35    Irrigation and drainage equipment 65.060.35
Issued by:	AQSIQ;SAC
Issued on:	2012-12-31
Implemented on:	2013-7-1
Status:	abolished
Superseded by:	GB/T 18688-2023 Agricultural irrigation equipment—Pressure losses in irrigation valves—Test method
Superseded on:	2024-6-1
Abolished on:	2024-06-01
Superseding:	GB/T 18688-2002 Agricultural irrigation equipment - Pressure losses in irrigation valves - Test method
Language:	English
File Format:	PDF
Word Count:	7000 words
Price(USD):	200.0
Delivery:	via email in 1~3 business day

本标准规定了农业灌溉用阀(以下简称阀)在稳态流动状态下,水通过时产生的压力损失的试验方法。试验得出的阀性能参数范围和准确度可用于农业灌溉系统设计者比较各种类型阀的压力损失。
通过压力损失试验,可以得出阀的流量与压力损失的函数关系。
本标准还规定了试验数据的处理方法和试验报告的内容。
本标准未涉及产品的用途、设计和应用。
本标准规定的试验方法适用于进口和出口公称尺寸相等的阀。
注:如果没有特殊说明,本标准公式中的量均采用ISO1000推荐的SI单位。