閥門選型-閥門選定和管道設計時，應注意事項

電動閥門選中和途徑設汁時，應需注意重大事項有以下：

　　Selection of valves and design of pipes shall comply with the following principals:

　　1、結合高壓閥門選擇地方、功用且詳細了解關與法規條件、規格、條件、指導方針、許用認定后時需使用的是和各式各樣要的管道閥門；

　　In terms of locations and purposes of valves, the suitable valves can be selected after knowing relevant specification, size,

　　standards,principal and permission;

　　2、確保管道閥門的運行條件、應用媒介、運行重壓、媒介溫濕度

　　Need to specify the working condition, applicable medium, working pressure and working temperature of media;

　　3、確立與通道相識別的公稱通徑DN  （mm）

　　Need to specify the nominal diameter to match the pipeline: DN（mm）

　　4、確認與管路相聯接行為法蘭片式、內（外）螺母式、點焊式、對夾式、管箍式、卡糟式、卡套式等

　　Need to specify the connecting type of the pipeline, including flanged type, inside&outside screwed type, welded type, wafer

　　type, clip type, groove

　　type,and union type etc.;

　　5、制定閥體的工作習慣：人工操作、蝸桿動、油路分配器、智能、液動、磁感應動、電液動

　　Need to specify the operating type of the valve, including lever, worm gear, pneumatic actuator, hydraulic actuator,

　　electromagnetic actuator and electromagnetic-hydraulic actuator etc.;

　　6、判定止回閥的業務類型閘閥、截止日閥、節流閥、閘閥、閥門、pu氣管閥、旋塞閥、止回閥、安全可靠閥、緩壓閥、疏水閥、注塞泵閥、水利調節閥試述他特種工藝閥

　　Need to specify the model of the valve, including gate valve, globe valve, throttle valve, ball valve, butterfly valve, diaphragm

　　valve, plug valve, check valve, safety valve, reducing valve, steam trap and plunger valve etc.;

　　7、知道蝶閥的操作的形式電源開關型、上下調整型、安全衛生型等

　　Need to specify the working type of valve, including on-off type, adjusting type, safety type etc.;

　　8、確實閥體外殼及內件的文件灰鐵、球鐵、高碳鋼、錳鋼鋼、不繡鋼、蒙乃爾錳鋼、銅錳鋼、鋁錳鋼、塑料制品等

　　Need to specify material of body and trim, including grey iron, ductile iron, carbon steel, alloy steel, stainless steel, monel alloy,copper alloy, aluminum alloy, plastic etc.;

　　9、確立氣動閥門的隔絕蓋性能指標要、隔絕蓋等級劃分或隔絕蓋走漏量

　　Need to specify the requirements on

　　10、確立調節閥的加固鋁層必須、打包必須、運送必須

　　seal performance and grade or leakage;

　　Need to specify the requirements on coating, packing and transportation;

　　11、特別是需要的球閥還應認定組成時間、伐門極高、能力長寬、流阻、排放標準專業能力、留量形態、安全防護網檔次、防爆設備能力等參數值

　　Need to specify face to face dimension, height, outline sizes, flow resistance, drainage ability, flow characteristic, protected

　　grade, anti-explosive performances etc. for special valves;

　　12、選擇閘閥的的安裝位址及做法

　　Need to specify the installed position and direction for the valve.