原文：
            1．根据使用场所、用途，且了解有关法规、 球阀规格、标准、方针、许用认可后既可选用适合各种要求的阀门；

 2．确认阀门的工作条件、适用介质、工作压力、蝶阀介质温度；

 3．确定与管道相匹配的公称通径：DN(mm)；

 4．确定与管道相连接方式：法兰式、截止阀内(外)螺纹式、焊接式、对夹式、卡箍式、卡套式等；

 5．确定阀门的操作方式：手动、蜗轮动、气动、电动、液动、电磁动、电液动等；

 6．确认阀门的类型：闸阀、截止阀、节流阀、闸阀柱塞阀、球阀、蝶阀、隔膜阀、旋塞阀、止回阀、安全阀、疏水阀及其它特种阀；

 7．确定阀门的使用形式：开关型、调节型、安全型等；

 8．确定阀门壳体及内件的材料：灰铁、止回阀球铁、碳钢、合金钢、不锈钢、铜合金、铝合金、塑料等；

 9．确定阀门的密封性能要求、密封等级或密封泄漏量；

 10．确定阀门的防护涂层要求、包装要求、运输要求；

11．特殊需要的阀门还应确定：结构长度、阀门高度、外型尺寸、流阻、排放能力、流量特性、防护等级、防爆性能等参数；

 12．确定阀门的安装位置及姿势。

“ Valve selection and the selection and pipeline design notes ”是由中国针型阀网提供的国际阀门新闻，译文仅供参考。另外，中国针型阀网还提供相关产品搜索： 卡套式针型阀、 仪表针型阀、 角式针型阀、 仪表阀组、 仪表球阀(气动管路球阀)等。

译文：
          1. According to site of use, use, and understand the relevant laws and regulations, specifications, standards, guidelines, allowable can use for a variety of post-approval requirements Check Valvesof the valve; 2. Confirm the working conditions of the valve, for media, working pressure, medium temperature; 3. Identify and match the nominal pipe diameter: DN (mm); 4. Connected with the pipe to determine mode: flange, and internal (external) threaded, welded, waferBall Valves type, clamp type, sleeve style, etc.; 5. Determine the valve's operating modes: manual, worm gear, pneumatic, electric, hydraulic, electromagnetic action,Gate Valves such as electric hydraulic; 6. Confirm the type of valve: gate valve, globe valve, throttle valve, plunger valve, ball valve, butterfly valve, diaphragm valves, plug valves, check valves, safety valves, steam traps and other special valves; 7. Determine the use of the valve Butterfly Valvesforms: switching, adjusting type, security type, etc.; 8. Determine the valve casing and the inner parts of the material: gray iron, ductile iron, carbon steel, alloy steel, stainless steel, copper alloy, aluminum, plastic, etc.; 9. Determine the performance requirements of the valve seal, seal, or seal leakage level; 10. Determine the valve's protective Plug Valvescoating requirements, packaging requirements, transportation requirements; 11. Valves should also identify the special needs: the length structure, valve height, shape size, flow resistance, discharge capacity, flow characteristics, degree of protection, explosion-proof performance and other parameters; 12. Determine the valve installation position and posture.

原文来源：
http://www.1zhenxingfa.com/

2010-08-23 06:47

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