一、Q340H侧装偏心半球阀概述侧装偏心半球阀结构设计类似三偏心硬密封蝶阀，具有操作轻便、开启过程无磨擦、零泄漏、寿命长等优点。具有启闭无磨擦，密封面可实现自清洁，使用寿命长的特点，此外，调整或更换密封副，阀门可继续使用，避免了现行众多阀门密封失效整台报废的弊端，节省成本。二、Q340H侧装偏心半球阀特点1、密封副（阀芯，阀座）——双金属，实现金属球面环带硬密封，防火防爆；2、密封严紧，阀芯和阀座的密封是球面线接触，靠三维偏心实现零泄漏；3、密封副的阀芯留有补偿量，阀门使用较长时间发现密封副磨损时，只需松动手轮侧的限位螺栓，关闭时再转动少许，仍可实现可靠密封，延长使用寿命。4、可将压紧套拧掉，调整或更换阀座，阀门仍可继续使用，避免了现行众多阀门密封失效后整台报废的弊端。三、Q340H侧装偏心半球阀适用范围及主要技术参数半球阀产品按用途分为：通用阀、管线阀、料浆专用阀、燃气专用阀、石油化工专用阀、煤粉喷吹专用阀六大系列。在石油、化工、冶金、电力、燃气、排灰、喷煤粉等行业是闸阀、截止阀、Y型阀、球阀的更新换代产品。主要设计参数公称通径：DN50-1000公称压力：PN1.0-10.0Mpa四、Q340H侧装偏心半球阀材质阀体：WCBCF8CF8MZG1Cr18Ni9Ti球体：硬密封：ZG1Cr18Ni9Ti软密封：CF8/CF8M阀座：硬密封：2Cr13、1Cr18Ni9Ti软密封：PTFEPPL工作温度：硬密封：-40～425℃，软密封：-28～250℃四、Q340H侧装偏心半球阀采用的主要标准设计制造按API6DGB/T12237-1989;试验和检验按AP1598JB/T9092-1999;法兰尺寸GB/T9113-2000JB/T79-1994HG20592-1997;结构长度按KYV-2000四、Q340H侧装偏心半球阀主要外型尺寸公称压力PN（MPa）公称通径PN（MPa）DD1D2bWZ-dPBQ340F/Y球阀1.6/2.515956545141304-14-201057555141304-14-251158565141604-14-3213510078161604-18-4014511085162304-18-50160125100162304-18178/21665180145120184004-18/8-18191/24180195160135204008-18203/283100215/230180/190155/160207008-18/8-23229/305125245/270210/220185/1882211008-18/8-25356/381150280/300240/250210/2182411008-23/8-25394/403200335/360295/310265/27826150012-23/12-25457/502250405/425355/370320/3323012-25/12-30533/568300460/485410/430375/3903012-25/12-30610/648350520/550470/490435/4483416-25/16-34686/762400580/610525/550485/5053616-30/16-34762/838450640/660585/600545/5554020-30/20-34864/914500705/730650/660608/6104420-34/20-41914/9916008407707184824-41/20-411067/1143700910/955840/875788/8155020-14/24-481245/13468001020/1070950/990898/9305224-41/24-481372/15249001120/11801050/1090998/10255428-41/28-541524/172710001255/13051170/12101110/11405628-48/28-581753/1880公称压力PN（MPa）公称通径DN（mm）DD1D2D6bWZ-dPBQ340F/Y球阀4.01595654540161304-14-20105755551161304-14-25115856558161604-14-321351007866181604-18-401451108576182304-18-5016012510088202304-1821665180145120110224-1824180195160135121228-18283100230190160150248-23305125270220188175288-25381150300250218204308-254032003753202822603812-305022504453853453134212-345683005104504083644616-346483505705104654225216-347624006655855354745816-418384506806105605246020-418145007556706125766220-489916008907957306786220-5411437009959008257686824-541346800113510309608767624-5815246.4/10.015105755541181604-14-20125906851181604-18-251351007858202304-18-321501108266222304-23-401651259576244004-23-50175/195135/145105/11288264004-23/4-2529265200/220160/17010/138110287004-23/8-2533080210/230170/180140/1481213011008-23/8-25356100256/265200/210168/1721503215008-25/8-30406/432150340/350280/290240/250204388-34/12-34495/559200405/430345/360300/3122604412-34/12-41597/660250470/500400/430352/3823134812-41/12-41673/787300530/585460/500412/4423645416-41/16-48762/832350595/655525/560475/4984226016-41/16-54826/889400670/715585/620525/5584746616-48/16/54902/991450800/705/640/5767020-54/-500930/820/750/6787620-58/1054/1194)