法兰球(qiu)(qiu)阀(fa)(fa)是石(shi)油(you)化(hua)工装置(zhi)中(zhong)(zhong)量大面广(guang)的(de)(de)(de)(de)重要压力管道元(yuan)(yuan)件，它具有截断、调节(jie)、导流(liu)、防止逆(ni)流(liu)、稳压、分(fen)流(liu)或(huo)溢(yi)流(liu)、泄压等(deng)功能；阀(fa)(fa)门(men)(men)(men)也是管路中(zhong)(zhong)较(jiao)复(fu)杂(za)的(de)(de)(de)(de)元(yuan)(yuan)件，它一般由多个(ge)零部件装配而成(cheng)，结构复(fu)杂(za)、技(ji)术(shu)含量较(jiao)高。阀(fa)(fa)门(men)(men)(men)的(de)(de)(de)(de)应用(yong)(yong)极广(guang)，在(zai)各(ge)(ge)类(lei)石(shi)油(you)化(hua)工和化(hua)工装置(zhi)中(zhong)(zhong)，管道材料费用(yong)(yong)约占(zhan)项(xiang)目总(zong)投资的(de)(de)(de)(de)15%~20%，而阀(fa)(fa)门(men)(men)(men)的(de)(de)(de)(de)投资费用(yong)(yong)又约占(zhan)配管总(zong)费用(yong)(yong)的(de)(de)(de)(de)50%以(yi)(yi)上，其中(zhong)(zhong)各(ge)(ge)种(zhong)类(lei)型阀(fa)(fa)门(men)(men)(men)的(de)(de)(de)(de)比例不尽相同，以(yi)(yi)炼油(you)装置(zhi)为(wei)例，各(ge)(ge)种(zhong)类(lei)型阀(fa)(fa)门(men)(men)(men)在(zai)装置(zhi)内占(zhan)阀(fa)(fa)门(men)(men)(men)总(zong)数的(de)(de)(de)(de)比例分(fen)别为(wei)：闸阀(fa)(fa)80%、截止阀(fa)(fa)8%、止回阀(fa)(fa)6%，这(zhei)三(san)种(zhong)阀(fa)(fa)在(zai)石(shi)油(you)化(hua)工生产装置(zhi)中(zhong)(zhong)是应用(yong)(yong)较(jiao)多的(de)(de)(de)(de)阀(fa)(fa)门(men)(men)(men)，其他阀(fa)(fa)门(men)(men)(men)占(zhan)6%，阀(fa)(fa)门(men)(men)(men)投资占(zhan)装置(zhi)的(de)(de)(de)(de)5%~8%。以(yi)(yi)250万(wan)吨/年常(chang)减(jian)压装置(zhi)和140万(wan)吨/年催(cui)化(hua)裂化(hua)装置(zhi)为(wei)例，阀(fa)(fa)门(men)(men)(men)规格占(zhan)阀(fa)(fa)门(men)(men)(men)总(zong)个(ge)数的(de)(de)(de)(de)比例为(wei)：DN≥4003%，DN150~35012%，DN50~10025%，DN≤4060%。球(qiu)(qiu)阀(fa)(fa)产品，就选(xuan)浙(zhe)江(jiang)万(wan)联阀(fa)(fa)业有限公司，有需求可以(yi)(yi)来电咨询(xun)！浙(zhe)江(jiang)球(qiu)(qiu)阀(fa)(fa)国标

二、固(gu)定(ding)(ding)式(shi)球(qiu)阀(fa)(fa)结构特点固(gu)定(ding)(ding)式(shi)球(qiu)阀(fa)(fa)同样有(you)进出(chu)口两(liang)个(ge)阀(fa)(fa)座密封圈。中(zhong)间(jian)的(de)球(qiu)芯(xin)通过(guo)上(shang)阀(fa)(fa)杆(gan)和下阀(fa)(fa)杆(gan)，与阀(fa)(fa)体固(gu)定(ding)(ding)在(zai)一起。只(zhi)能通过(guo)阀(fa)(fa)杆(gan)的(de)转(zhuan)动(dong)(dong)(dong)，带动(dong)(dong)(dong)球(qiu)芯(xin)的(de)开关(guan)动(dong)(dong)(dong)作。其(qi)无法像浮动(dong)(dong)(dong)球(qiu)阀(fa)(fa)那样，向出(chu)口方向移(yi)动(dong)(dong)(dong)，因为上(shang)下阀(fa)(fa)杆(gan)限制了球(qiu)芯(xin)的(de)移(yi)动(dong)(dong)(dong)。所以称为固(gu)定(ding)(ding)式(shi)球(qiu)阀(fa)(fa)。

进出口的(de)(de)阀座通过弹(dan)簧(huang)预紧(jin)力给(ji)了球芯与阀座间的(de)(de)初始密(mi)(mi)封(feng)压(ya)力。介质的(de)(de)压(ya)力推动阀座密(mi)(mi)封(feng)圈压(ya)紧(jin)球芯。增加了阀座的(de)(de)密(mi)(mi)封(feng)性(xing)能。当阀座密(mi)(mi)封(feng)磨损(sun)(sun)时，阀座在弹(dan)簧(huang)的(de)(de)作用(yong)下，自动补(bu)偿磨损(sun)(sun)部分(fen)，依然保持良好的(de)(de)密(mi)(mi)封(feng)性(xing)。

由(you)于(yu)阀座截面(mian)是(shi)一个(ge)圆环。介(jie)质(zhi)压(ya)力作用(yong)面(mian)积(ji)要(yao)小(xiao)(xiao)于(yu)球(qiu)(qiu)芯(xin)截面(mian)积(ji)，所(suo)以阀座受到压(ya)力要(yao)比(bi)浮动球(qiu)(qiu)阀小(xiao)(xiao)。即减(jian)小(xiao)(xiao)了球(qiu)(qiu)阀的阀杆(gan)扭(niu)矩。所(suo)以在高(gao)压(ya)大口(kou)径球(qiu)(qiu)阀中，都采用(yong)固定式球(qiu)(qiu)阀。广东(dong)高(gao)压(ya)球(qiu)(qiu)阀定制浙江万联阀业(ye)生产(chan)的美标不锈钢法兰(lan)球(qiu)(qiu)阀,用(yong)于(yu)管道泵(beng)的组(zu)件(jian),是(shi)制造泵(beng)业(ye)公(gong)司的好伙伴.

球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)的(de)选择连(lian)接(jie)方式：法兰(lan)连(lian)接(jie)，对夹(jia)连(lian)接(jie)，内螺纹连(lian)接(jie)，外螺纹连(lian)接(jie)，快装连(lian)接(jie)，焊接(jie)连(lian)接(jie)（对焊连(lian)接(jie)，承(cheng)插(cha)焊连(lian)接(jie)）阀(fa)(fa)(fa)(fa)(fa)座密(mi)封(feng)(feng)：金属(shu)硬密(mi)封(feng)(feng)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)，即阀(fa)(fa)(fa)(fa)(fa)座密(mi)封(feng)(feng)面与球(qiu)(qiu)体密(mi)封(feng)(feng)面为(wei)金属(shu)对金属(shu)的(de)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)。适(shi)用(yong)于高温(wen)(wen)，含有固(gu)体颗粒，需要耐磨损的(de)工(gong)况。软(ruan)密(mi)封(feng)(feng)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)，阀(fa)(fa)(fa)(fa)(fa)座采(cai)用(yong)聚四(si)氟(fu)乙烯PTFE，对位(wei)聚苯PPL弹性(xing)密(mi)封(feng)(feng)材料，密(mi)封(feng)(feng)效果好(hao)，可以实现零泄漏。阀(fa)(fa)(fa)(fa)(fa)门材料：WCB铸钢(gang)(gang)(gang)，低温(wen)(wen)钢(gang)(gang)(gang)，不(bu)锈(xiu)钢(gang)(gang)(gang)304，304L，316，316L，双(shuang)相(xiang)钢(gang)(gang)(gang)，钛合金，等等。使用(yong)温(wen)(wen)度：常温(wen)(wen)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)，-40℃～120℃。中温(wen)(wen)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)，120～450℃。高温(wen)(wen)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)，≥450℃。低温(wen)(wen)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)-100～-40℃。低温(wen)(wen)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)≤100℃。工(gong)作(zuo)压(ya)(ya)(ya)力(li)：低压(ya)(ya)(ya)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)，公称压(ya)(ya)(ya)力(li)PN≤1.6MPa。中压(ya)(ya)(ya)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)，公称压(ya)(ya)(ya)力(li)2.0-6.4MPa。高压(ya)(ya)(ya)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)≥10MPa。真空球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)，低于一(yi)个大气压(ya)(ya)(ya)的(de)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)。结构形式：浮动球(qiu)(qiu)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)，固(gu)定球(qiu)(qiu)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)，V型球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)，偏心半球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)，旋球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)流(liu)道形式：直通(tong)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)，三通(tong)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)（L型流(liu)道，T型流(liu)道），四(si)通(tong)球(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)

偏(pian)心半(ban)球阀(fa)(fa)(fa)重(zhong)点在(zai)(zai)于偏(pian)心。即阀(fa)(fa)(fa)轴和半(ban)球体(ti)的(de)(de)中心线(xian)有一个(ge)尺寸偏(pian)量。这个(ge)偏(pian)心使球芯与阀(fa)(fa)(fa)座(zuo)(zuo)之间的(de)(de)接触存在(zai)(zai)很短，只在(zai)(zai)关闭(bi)和打开(kai)阀(fa)(fa)(fa)门的(de)(de)瞬间存在(zai)(zai)接触。减少了阀(fa)(fa)(fa)芯与阀(fa)(fa)(fa)座(zuo)(zuo)的(de)(de)磨(mo)损。延长(zhang)了阀(fa)(fa)(fa)门使用寿命.

V型(xing)球(qiu)(qiu)阀的阀芯也是采用半(ban)球(qiu)(qiu)结构，重点在于阀芯上(shang)开有V型(xing)口(kou)，通过(guo)V型(xing)口(kou)可以控(kong)制更小的流量，同时其流通能力比(bi)(bi)一般(ban)调节(jie)阀要(yao)大。所以其可调比(bi)(bi)远远超过(guo)普通调节(jie)阀。但是V型(xing)球(qiu)(qiu)阀球(qiu)(qiu)芯密封面与阀座始(shi)终处于密切接触状(zhuang)态。阀轴与半(ban)球(qiu)(qiu)体(ti)中心线处于流道中心线，没有偏心结构。

区别(bie)一(yi)：阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)芯(xin)不同(tong)，偏(pian)(pian)(pian)(pian)心(xin)半(ban)(ban)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)球(qiu)(qiu)(qiu)(qiu)面没有(you)开(kai)V型(xing)(xing)口(kou)。V型(xing)(xing)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)球(qiu)(qiu)(qiu)(qiu)面开(kai)有(you)V型(xing)(xing)口(kou)，V型(xing)(xing)口(kou)可以获得更(geng)小的(de)(de)(de)流量控(kong)制，同(tong)时(shi)带来更(geng)好的(de)(de)(de)剪(jian)切能(neng)力，适合含有(you)纤(xian)维(wei)的(de)(de)(de)介质。区别(bie)二：大(da)口(kou)径(jing)偏(pian)(pian)(pian)(pian)心(xin)半(ban)(ban)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)球(qiu)(qiu)(qiu)(qiu)芯(xin)密(mi)(mi)封面可以单(dan)独(du)更(geng)换，维(wei)修(xiu)方便，节约成本。V型(xing)(xing)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)球(qiu)(qiu)(qiu)(qiu)芯(xin)密(mi)(mi)封面与球(qiu)(qiu)(qiu)(qiu)芯(xin)为整(zheng)(zheng)体，修(xiu)理(li)时(shi)需要整(zheng)(zheng)体更(geng)换半(ban)(ban)球(qiu)(qiu)(qiu)(qiu)芯(xin)。区别(bie)三：偏(pian)(pian)(pian)(pian)心(xin)半(ban)(ban)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)多(duo)用(yong)(yong)于(yu)开(kai)关控(kong)制。V型(xing)(xing)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)多(duo)用(yong)(yong)于(yu)调节控(kong)制，并且可调比大(da)，可达100:1或更(geng)高，远高于(yu)普通调节阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)的(de)(de)(de)30:1。区别(bie)四：偏(pian)(pian)(pian)(pian)心(xin)半(ban)(ban)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)可选(xuan)用(yong)(yong)大(da)口(kou)径(jing)产(chan)(chan)品(pin)DN2000以上(shang)。V型(xing)(xing)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)产(chan)(chan)品(pin)一(yi)般DN500以下。区别(bie)五：偏(pian)(pian)(pian)(pian)心(xin)半(ban)(ban)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)采用(yong)(yong)侧(ce)装(zhuang)或上(shang)装(zhuang)式结构。V型(xing)(xing)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)多(duo)是侧(ce)装(zhuang)结构。浙江万联阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)业有(you)限公司(si)致(zhi)力于(yu)提供球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)(fa)(fa)(fa)(fa)产(chan)(chan)品(pin)，有(you)想法的(de)(de)(de)可以来电咨询！

球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)的功能与旋(xuan)(xuan)塞阀(fa)(fa)(fa)(fa)类似(球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)是旋(xuan)(xuan)塞阀(fa)(fa)(fa)(fa)的派生(sheng)产品)，由于(yu)价格便(bian)宜(yi)，球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)比(bi)旋(xuan)(xuan)塞阀(fa)(fa)(fa)(fa)使用(yong)更多(duo)(duo)。球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)特点(dian):在(zai)众多(duo)(duo)阀(fa)(fa)(fa)(fa)门中其(qi)流(liu)(liu)(liu)(liu)体(ti)阻(zu)力更小(xiao)，流(liu)(liu)(liu)(liu)动(dong)(dong)性更好(hao)，密(mi)(mi)封效果较好(hao)、启(qi)闭迅速、维修方便(bian)。球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)一(yi)般可以(yi)从(cong)球(qiu)(qiu)(qiu)(qiu)体(ti)结构(gou)形式(shi)、阀(fa)(fa)(fa)(fa)体(ti)结构(gou)形式(shi)、流(liu)(liu)(liu)(liu)道(dao)形式(shi)和(he)(he)阀(fa)(fa)(fa)(fa)座材料来(lai)进行分(fen)(fen)类。按(an)(an)球(qiu)(qiu)(qiu)(qiu)体(ti)结构(gou)形式(shi)分(fen)(fen)有(you)(you)浮动(dong)(dong)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)和(he)(he)固定球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)。前者(zhe)(zhe)多(duo)(duo)用(yong)于(yu)小(xiao)口径(jing)，后者(zhe)(zhe)用(yong)于(yu)大口径(jing);按(an)(an)阀(fa)(fa)(fa)(fa)体(ti)结构(gou)形式(shi)分(fen)(fen)有(you)(you)一(yi)片式(shi)、两片式(shi)和(he)(he)三(san)片式(shi)三(san)种。一(yi)片式(shi)又有(you)(you)顶装(zhuang)式(shi)和(he)(he)侧(ce)装(zhuang)式(shi)两种;按(an)(an)流(liu)(liu)(liu)(liu)道(dao)形式(shi)分(fen)(fen)有(you)(you)全通(tong)(tong)径(jing)和(he)(he)缩径(jing)。缩径(jing)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)比(bi)全通(tong)(tong)径(jing)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)用(yong)料少，价格便(bian)宜(yi)，如果工艺(yi)条(tiao)件允许，可以(yi)考虑优先(xian)使用(yong);球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)流(liu)(liu)(liu)(liu)道(dao)可分(fen)(fen)为直通(tong)(tong)、三(san)通(tong)(tong)、四通(tong)(tong)，适(shi)用(yong)于(yu)气、液(ye)相流(liu)(liu)(liu)(liu)体(ti)多(duo)(duo)向分(fen)(fen)配;按(an)(an)阀(fa)(fa)(fa)(fa)座材料分(fen)(fen)有(you)(you)软密(mi)(mi)封和(he)(he)硬密(mi)(mi)封。当用(yong)于(yu)可燃介(jie)质或者(zhe)(zhe)外部环境有(you)(you)可能燃烧时，软密(mi)(mi)封球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)应(ying)具(ju)有(you)(you)防(fang)静电(dian)、防(fang)火设(she)计，制造商(shang)的产品应(ying)通(tong)(tong)过防(fang)静电(dian)、防(fang)火试(shi)验。球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)的应(ying)用(yong):一(yi)般适(shi)用(yong)于(yu)低温、高压、浆液(ye)、黏性流(liu)(liu)(liu)(liu)体(ti)以(yi)及对密(mi)(mi)封要(yao)求较高的介(jie)质管道(dao)上。对于(yu)要(yao)求快速启(qi)闭的场合一(yi)般选用(yong)球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)，不能用(yong)作(zuo)调节(jie)流(liu)(liu)(liu)(liu)量。浙江万联(lian)阀(fa)(fa)(fa)(fa)业(ye)有(you)(you)限公(gong)司球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)产品值(zhi)得放心。新疆硅溶胶国标法兰球(qiu)(qiu)(qiu)(qiu)阀(fa)(fa)(fa)(fa)哪种好(hao)

球阀(fa)产品，就选(xuan)浙(zhe)江(jiang)万(wan)联阀(fa)业有限公司(si)，有想(xiang)法的可以来电咨(zi)询！浙(zhe)江(jiang)球阀(fa)国标(biao)

球阀厂家执行标(biao)准查找(zhao)

球阀(fa)(fa)结构(gou)长(zhang)(zhang)度(du)：ASMEB16.10《阀(fa)(fa)门(men)的结构(gou)长(zhang)(zhang)度(du)》ISO5752《法(fa)(fa)兰连接金(jin)属(shu)(shu)阀(fa)(fa)门(men)结构(gou)长(zhang)(zhang)度(du)》BS558《工(gong)业阀(fa)(fa)门(men)法(fa)(fa)兰连接管(guan)道系统(tong)用金(jin)属(shu)(shu)阀(fa)(fa)门(men)的结构(gou)长(zhang)(zhang)度(du)》BS12982《工(gong)业阀(fa)(fa)门(men)对(dui)焊端(duan)阀(fa)(fa)门(men)的结构(gou)长(zhang)(zhang)度(du)》GB／T12221《法(fa)(fa)兰连接金(jin)属(shu)(shu)阀(fa)(fa)门(men)结构(gou)长(zhang)(zhang)度(du)》GB／T15188.1《阀(fa)(fa)门(men)的结构(gou)长(zhang)(zhang)度(du)对(dui)焊连接阀(fa)(fa)门(men)》

球阀(fa)(fa)(fa)(fa)(fa)试(shi)验(yan)(yan)(yan)(yan)与(yu)检验(yan)(yan)(yan)(yan)：API598《阀(fa)(fa)(fa)(fa)(fa)门(men)的(de)检查与(yu)试(shi)验(yan)(yan)(yan)(yan)》API6D《管线(xian)阀(fa)(fa)(fa)(fa)(fa)门(men)》API607《转1/4周软阀(fa)(fa)(fa)(fa)(fa)座阀(fa)(fa)(fa)(fa)(fa)门(men)的(de)耐火(huo)(huo)试(shi)验(yan)(yan)(yan)(yan)》API6FA《阀(fa)(fa)(fa)(fa)(fa)门(men)耐火(huo)(huo)试(shi)验(yan)(yan)(yan)(yan)规范(fan)》GB／T13927《通用阀(fa)(fa)(fa)(fa)(fa)门(men)压力试(shi)验(yan)(yan)(yan)(yan)》JB／T9092《阀(fa)(fa)(fa)(fa)(fa)门(men)的(de)检验(yan)(yan)(yan)(yan)与(yu)试(shi)验(yan)(yan)(yan)(yan)》JB／T6899《阀(fa)(fa)(fa)(fa)(fa)门(men)的(de)耐火(huo)(huo)试(shi)验(yan)(yan)(yan)(yan)》BS6755第1篇(pian)(pian)(pian)《阀(fa)(fa)(fa)(fa)(fa)门(men)的(de)试(shi)验(yan)(yan)(yan)(yan)第1篇(pian)(pian)(pian)产品压力试(shi)验(yan)(yan)(yan)(yan)的(de)要求(qiu)规范(fan)》BS6755第2篇(pian)(pian)(pian)《阀(fa)(fa)(fa)(fa)(fa)门(men)的(de)试(shi)验(yan)(yan)(yan)(yan)第2篇(pian)(pian)(pian)燃烧试(shi)验(yan)(yan)(yan)(yan)的(de)要求(qiu)规范(fan)》BS12569《工(gong)(gong)业阀(fa)(fa)(fa)(fa)(fa)门(men)化工(gong)(gong)和石油化工(gong)(gong)加工(gong)(gong)工(gong)(gong)业用阀(fa)(fa)(fa)(fa)(fa)门(men)要求(qiu)和试(shi)验(yan)(yan)(yan)(yan)》MSSSP-82《阀(fa)(fa)(fa)(fa)(fa)门(men)压力试(shi)验(yan)(yan)(yan)(yan)方法》MSSSP-61《钢阀(fa)(fa)(fa)(fa)(fa)门(men)的(de)压力试(shi)验(yan)(yan)(yan)(yan)》浙江球阀(fa)(fa)(fa)(fa)(fa)国标

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