Standard No.:	GB/T 18691.5-2011
English Name:	Agricultural irrigation equipment—Irrigation valves—Part 5:Control valves
Chinese Name:	农业灌溉设备 灌溉阀 第5部分：控制阀
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:	2011-5-12
Implemented on:	2011-10-1
Status:	superseded
Superseded by:	GB/T 18691.5-2021 Agricultural irrigation equipment―Irrigation valves―Part 5:Control valves
Superseded on:	2022-7-1
Superseding:	GB/T 19793-2005 Agricultural irrigation equipment―Hydraulically operated irrigation avlves
Language:	English
File Format:	PDF
Word Count:	7000 words
Price(USD):	210.00
Delivery:	via email in 1~3 business day

本部分规定了控制阀的设计要求、性能要求、一致性评定、标志和包装。
本部分适用于水温不超过60 ℃，并且水中可能含有某些农业常用类型和浓度的肥料或化学物质的灌溉系统。
本部分适用于公称尺寸不小于DN 15的液力驱动式灌溉控制阀。该控制阀设计工作状态为从全开到全关的任意位置。阀门可直接操作（例如通过弹簧或隔膜控制启闭件）或先导式控制（例如经隔膜通过可调节先导阀控制启闭件）。