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GB/T 18690.2-2017 English PDF

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GB/T 18690.2-2017: Agricultural irrigation equipment -- Filters for micro-irrigation -- Part 2: Strainer-type filters and disc filters
Status: Valid

GB/T 18690.2: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 18690.2-2017English199 Add to Cart 3 days [Need to translate] Agricultural irrigation equipment -- Filters for micro-irrigation -- Part 2: Strainer-type filters and disc filters Valid GB/T 18690.2-2017
GB/T 18690.2-2002English359 Add to Cart 3 days [Need to translate] Agricultural irrigation equipment -- Filters -- Strainer-type filters Obsolete GB/T 18690.2-2002

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Basic data

Standard ID GB/T 18690.2-2017 (GB/T18690.2-2017)
Description (Translated English) Agricultural irrigation equipment -- Filters for micro-irrigation -- Part 2: Strainer-type filters and disc filters
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard B91
Classification of International Standard 65.060.35
Word Count Estimation 10,187
Date of Issue 2017-09-29
Date of Implementation 2018-04-01
Older Standard (superseded by this standard) GB/T 18690.2-2002
Regulation (derived from) National Standard Announcement 2017 No. 23
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 18690.2-2017: Agricultural irrigation equipment -- Filters for micro-irrigation -- Part 2: Strainer-type filters and disc filters


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Agricultural irrigation equipment-Filters for microirrigation-Part 2. Strainer-type filters and disc filters ICS 65.060.35 B91 National Standards of People's Republic of China Replacing GB/T 18690.2-2002 Agricultural irrigation equipment micro-irrigation filter Part 2. Mesh filters and laminated filters Part 2.Strainer-typefiltersanddiscfilters (ISO 9912-2.2013, IDT) 2017-09-29 Posted 2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 18690 "Agricultural irrigation equipment for micro-irrigation filter" is divided into three parts. --- Part 1. Terms, definitions and classification; --- Part 2. Mesh filters and laminated filters; --- Part 3. Automatic washing mesh filter and laminated filter. This section GB/T 18690 Part 2. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 18690.2-2002 "Agricultural irrigation equipment filter mesh filter." This section compared with GB/T 18690.2-2002, in addition to editorial changes outside the main technical changes are as follows. --- Added some terms (see Chapter 3); --- Modify the scope of the standard (see Chapter 1,.2002 edition Chapter 1); --- Remove the sampling and acceptance rules (see the.2002 edition of Chapter 6); --- Increased circulating pressure test (see 6.2.3). This section uses the translation method is equivalent to using ISO 9912-2.2013 "Agricultural irrigation equipment, micro-irrigation filter with Part 2. Filter and lamination filter ". This section made the following editorial changes. --- Use "MPa" instead of "bar". This part is proposed by China Machinery Industry Federation. This part of the National Agricultural Machinery Standardization Technical Committee (SAC/TC201) centralized. This section drafted by. China Agricultural Mechanization Research Institute, Jiangsu University Fluid Machinery Engineering Research Center. The main drafters of this section. Zhang Xian Sheng, Wang Yang, Zhao Liwei, Yan Hao Fang, Hou Yongsheng, Lin Yuhan. This part replaces the standards previously issued as. --- GB/T 18690.2-2002. Agricultural irrigation equipment micro-irrigation filter Part 2. Mesh filters and laminated filters

1 Scope

GB/T 18690 provisions of this part of the agricultural irrigation system used mesh filter and laminated filter (hereinafter referred to as filtration ) General structural requirements and test methods. This section does not cover the filter performance, efficiency and capacity (such as the quality of filtered water, the filter is completely blocked before running time Etc.), nor the structural requirements and tests for filters with automatic flushing devices specified in ISO / NOTE The definition and test methods for filter performance, efficiency and capacity parameters will be given in other ISO technical reports. The technical report will provide for the phase Test methods for the comparison of various filters using user-specified water under the same operating conditions to characterize the filter in the user or tester's specified water The operating characteristics.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. Agricultural irrigation equipment - Filters for micro - irrigation - Part 1. Terms, definitions and classification (ISO 9912-1-2009). 2004, IDT) ISO 7-1 Threaded Pipe Threads Part 1. Dimensions, Tolerances and Markings (Pipethreadswherepressure-tight jointsaremadeonthethreads-Part 1.Dimensions, tolerancesanddesignation) ISO 7005-1 Pipe Flanges Part 1. Steel Flanges for Industrial and General Purpose Piping Systems (Pipeflanges-Part 1. Steelflangesforindustrialand generalservicepipingsystems) ISO 7005-2 metal flange Part 2. Cast iron flange (Metalicflanges-Part 2.Castironflanges)

3 Terms and definitions

GB/T 18690.1-2009 defined and the following terms and definitions apply to this document. 3.1 Strainerfilter Strainer strainer Equipped with one or more filter elements (eg, mesh or mesh) through which the blockage in the flow of water is trapped on its surface and A device that separates the blockage from the water. [GB/T 18690.1-2009, Definition 2.8] 3.2 Laminated filter discfilter The filter element is a laminated filter. (See 3.4) 3.3 Mesh filter element strainerfilterelement Filter element filterelement A part of a mesh filter consisting of a perforated plate, a mesh, a mesh or a combination thereof for retaining more than a certain amount of water from the water flowing through it

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