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農(nóng)業(yè)灌溉設(shè)備 灌溉閥 隔離閥檢測(cè)項(xiàng)目報(bào)價(jià)？??解決方案？??檢測(cè)周期？??樣品要求？ |
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本文件規(guī)定了隔離閥的設(shè)計(jì)要求、性能要求、一致性評(píng)定、標(biāo)志和包裝。該隔離閥適用于水溫不超過(guò)60 ℃，并且水中可能含有某些農(nóng)業(yè)常用類型和濃度的肥料或化學(xué)物質(zhì)的灌溉系統(tǒng)。本文件適用于公稱尺寸不小于DN 8的灌溉隔離閥，該隔離閥的設(shè)計(jì)工作狀態(tài)為全開(kāi)和全關(guān)，但也可在任意中間狀態(tài)長(zhǎng)時(shí)間工作。
本標(biāo)準(zhǔn)規(guī)定了壓力灌溉系統(tǒng)中水頭控制器的零部件要求以及安裝方法（簡(jiǎn)稱為灌溉水頭控制器，其標(biāo)準(zhǔn)尺寸不大于200mm)。本標(biāo)準(zhǔn)僅適用于噴灌和微灌（小型噴灌、滴灌等）系統(tǒng)中水頭控制器的地上零部件。也可適用于一般性的灌溉水頭控制器。在一般性的灌溉水頭控制器上可安裝其他的灌溉控制和指令元件（例如電氣、電子、水力），但不能用于額外元件。本標(biāo)準(zhǔn)不適用于系統(tǒng)和/或元件中的灌溉水頭控制器有防凍要求的情況，例如干筒式水栓或其他形式的水栓。本標(biāo)準(zhǔn)沒(méi)有給出組成灌溉水頭控制器的單個(gè)元件的特殊設(shè)計(jì)及操作要求的說(shuō)明，在其各自相關(guān)標(biāo)準(zhǔn)給出詳細(xì)說(shuō)明。對(duì)于包含噴射農(nóng)藥部件系統(tǒng)的灌溉水頭控制器，應(yīng)設(shè)有防回流的元件及噴射檢測(cè)閥和其他安全設(shè)備（根據(jù)當(dāng)?shù)貥?biāo)準(zhǔn)和條款要求），但本標(biāo)準(zhǔn)中沒(méi)有包含此類設(shè)備要求。
本標(biāo)準(zhǔn)規(guī)定了農(nóng)業(yè)灌溉設(shè)備的常用術(shù)語(yǔ)和定義。本標(biāo)準(zhǔn)適用于節(jié)水灌溉設(shè)備(包括噴灌機(jī)、噴灌泵、噴灌管路、噴頭等設(shè)備)設(shè)計(jì)、制造和試驗(yàn)。
本標(biāo)準(zhǔn)規(guī)定了農(nóng)業(yè)灌溉設(shè)備評(píng)價(jià)用試驗(yàn)裝置系統(tǒng)組件的設(shè)計(jì)、選擇、安裝和使用指南。本標(biāo)準(zhǔn)適用于GB/T 17187、ISO 15886、GB/T 19794、GB/T 19793、GB/T 18688、GB/T 18689、GB/T 18691和GB/T 18692規(guī)定的試驗(yàn)方法，給農(nóng)業(yè)灌溉系統(tǒng)組件，特別是滴頭、噴頭和閥的試驗(yàn)提供足夠的信息。
GB/T 36702的本部分規(guī)定了化學(xué)灌溉用小型塑料閥(以下簡(jiǎn)稱“裝置”)的一般要求和試驗(yàn)方法。該裝置用于可能含有某些農(nóng)業(yè)常用類型和濃度的肥料或化學(xué)物質(zhì)的灌溉管路系統(tǒng)中。本部分適用于帶減壓區(qū)(RPZ)的可控安全裝置(還被稱為回流防止器)。該裝置用于防止當(dāng)上游飲用水分配系統(tǒng)壓力低于下游系統(tǒng)壓力時(shí)，因倒吸或背壓導(dǎo)致灌溉水回流進(jìn)入上游飲用水分配系統(tǒng)。本部分適用于公稱尺寸不大于DN50，公稱壓力為PN10，并且在下列情況下不需修正或調(diào)整能夠工作的裝置：——壓力在1 MPa以下；——壓力變化量不大于1 MPa；——溫度不大于45 ℃環(huán)境下長(zhǎng)期工作，溫度在65 ℃下工作1 h。
This part of ISO 9635 specifies construction and performance\nrequirements and test methods for isolating valves, intended for\noperation in irrigation systems with water at temperatures not\nexceeding 60 °C, which can contain fertilizers and other chemicals\nof the types and concentrations used in agriculture.\nIt is applicable to isolating irrigation valves of DN 8 in\ndiameter or greater, designed to operate in the fully open and\nfully closed positions, but which can also operate for extended\ntime periods in any intermediate position.
This document applies to irrigation hydrants intended to supply equipment for use in water distribution irrigation networks. The range of PN is that defined in EN 1074-1, i.e.: PN 10, PN 16, PN 25 and limited to PN 25.
This part of ISO 9635 specifies construction and performance requirements and test methods for isolating valves, intended for operation in irrigation systems with water at temperatures not exceeding 60 °C, which can contain fertilizers and other chemicals of the types and concentrations used in agriculture. It is applicable to hydraulically operated isolating irrigation valves of DN 8 (1/4 inch) diameter or greater, designed to operate in the fully open and fully closed positions, but which can also operate for extended time periods in any intermediate position.
This part of ISO 9635 specifies construction and performance requirements and test methods for isolating valves, intended for operation in irrigation systems with water at temperatures not exceeding 60 ?C, which can contain fertilizers and other chemicals of the types and concentrations used in agriculture.
Specifies construction and performance requirements and test methods for isolating valves, intended for operation in irrigation systems with water at temperatures not exceeding 60 which can contain fertilizers and other chemicals of the types and co
