ISO 9912-4:2018
农业灌溉设备.微灌用过滤器.第4部分：粒状介质过滤器

Agricultural irrigation equipment - Filters for microirrigation - Part 4: Granulated media filters

标准号

ISO 9912-4:2018

发布

2018年

发布单位

国际标准化组织

当前最新

ISO 9912-4:2018

 

 

引用标准

ISO 9644:2008 ISO 9912-1:2004 ISO 9912-2:2013 ISO 9912-3:2013

适用范围

This document specifies construction requirements and test methods for pressurized granulated media filters, hereinafter referred to as media filters, intended for operation in agricultural irrigation systems. It is applicable to both manual cleaning media filters and automatic self-cleaning media filters, used as single unit or in batteries (two or more units working in parallel). This document covers the operation and performance of a media filter, together with all related valves, back flushing mechanism, underdrains, manifolds and other related accessories necessary for the operation of the filter. This document is applicable to three configurations of a filter. a) An empty filter vessel (tank) housing. c) A filtration station, called “filter battery”. b) A filter vessel filled with media filter material(s), complete with valves, connections, air release and/or other accessories. This configuration, when connected to and controlled by a flushing control device, is a complete operating single filter unit, usually positioned as a part of a filtration station. Annex A provides information on types of irrigation media filters. Annex B provides information on granulated media.

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