针型阀的选用原则

针型阀的选用原则

针型阀的选用原则 1、低温介质的管路系统和装置上,宜选用加上阀盖的低温针型阀。2、炼油装置的催化裂化装置的管路系统上,可选用升降杆式针型阀。3、化工系统的酸碱等腐蚀性介质的装置和管路系统中,宜选用奥氏体不锈钢制造的、聚四氟乙烯为阀座密封圈的全不锈钢针型阀。4、冶金系统、电力系统、石化装置、城市供热系统中的高温介质的管路系统或装置上,可选用金属对金属密封针型阀。5、需要进行流量调节时,可选用蜗轮蜗杆传动的、气动或电动的带V形开口的调节针型阀。6、石油、天然气的输送主管线、需要清扫管线的,又需埋设在地下的,选用全通径、全焊接结构的针型阀;埋设在地上的,选择全通径焊接连接或法兰连接的球阀。7、成品油的输送管线和贮存设备,选用法兰连接的针型阀。8、城市煤气和天然气的管路上,选用法兰连接和内螺纹连接的针型阀。9、冶金系统中的氧气管路系统中,宜选用经过严格脱脂处理,法兰连接的针型阀。

“The principle of the selection of the needle valve”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: 仪表阀组、 仪表球阀(气动管路球阀)、 仪表截止阀(气动管路截止阀)、 更多针型阀产品、 针型阀价格等。

译文:
The principle of the selection of the needle valve A low temperature medium piping systems and devices, should be selected with a low temperature needle valve bonnet. 2, the pipeline system on the refining unit FCCU, the choice of the lift rod needle valve. 3, the chemical system, chemical and other corrosive media devices and piping system, should use of austenitic stainless steel, PTFE seat ring stainless steel needle valve. 4, metallurgical, power systems, petrochemical equipment, piping systems or devices on the high-temperature media in the urban heating system, the choice of metal to metal sealing needle valve. Need for flow control, the choice of the worm gear, pneumatic or electric with V-shaped openings adjust the needle valve. , Oil and gas transmission mains, you need to clean up the pipeline, and be buried in the ground, the choice of the needle valve of the full bore, all-welded structure; laid on the floor, full bore welded connection or flange connection ball valves. 7, refined oil pipelines and storage equipment, the choice of the needle valve flange connection. 8, town gas and natural gas pipeline, use the needle valve flange connections and threaded connection. 9, metallurgical oxygen in the piping system, should be selected to undergo a rigorous degreasing treatment, needle valve flange connection.

 

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