进口150LB法兰连接固定高压球阀品牌：美国威盾VTON进口固定高压球阀—美国威盾VTON，适用于Class150～2500LB，工作温度-28～300℃的石油、化工、火力电站等各种工况的管路上，其安全、耐恶劣环境性等的设计均已进行特殊考虑，适用介质为：水、蒸汽、油品、硝酸、醋酸、尿素等腐蚀性和强氧化性介质。操作方式有：手动、气动、电动、液动和气液联动等。进口固定高压球阀特点：1、阀门中腔停滞的压力异常超过弹簧的预紧力时，阀座后退脱离球体，达到自动泄压的效果，卸压后阀座自动复位。2、当万一发生火灾或由于异常升温使阀座密封圈烧损或软化时，在弹簧和介质压力作用下，使支撑圈球面部位和球体形成金属对金属接触，达到暂时密封作用，阻止了火灾进一步扩大，符合API6FA的规定。3、填料压盖部位密封采用PTFR填料和0形密封圈双重密封圈，特别适用于气体介质，填料装在填料盘内，可随时采用摩擦系统低的新型SF型自润滑滑动轴衬，减低操作力矩。【固定高压球阀主要外形尺寸】公称压力PN（Class）公称通径DNLd1DD1D2D6ff2bZ-φdH1H2RFBW全通径缩径1.62512716525-1158565-2-144-14-753214017832-13510078-2-164-18-854016519040-14511085-3-164-18-955017821650-160125100-3-164-18-1076519024165-180145120-3-184-18-142802832838065195160135-3-208-18-15210030530510080215180155-3-208-18-178125356381125100245210185-3-228-18-252150394457150125280240210-3-248-23-272200457521200150335295265-3-2612-23-398250533559250200405355320-3-2612-25335495300610625300250460410375-4-3012-25385580350686762350300520470435-4-3416-25430625400762838400350580525485-4-3616-30470720450864914450350640585545-4-4020-30--500914991500400705650608-4-4420-3459084060010671143600500840770718-5-4820-41700105070012451346700600910840788-5-5024-4178011502.52516516525-1158565-2-164-14-753218017832-13510078-2-184-18-854019019040-14511085-3-184-18-955021621650-160125100-3-204-18-1076524124165-180145120-3-228-18-142802832838065195160135-3-228-18-15210030530510080230190160-3-248-23-178125381381125100270220188-3-288-25-252150403457150125300250218-3-308-25-272200502521200150360310278-3-3412-25-398250568559250200425370332-3-3612-25335495300648635300250485430390-4-4012-30385580350762762350300550490448-4-4416-34430625400838838400350610550515-4-4816-34470720450914914450350660600550-4-5020-34-770500991991500400730660610-4-5220-4159084060011431143600500840770718-5-5620-41700105070013461346700600955875815-5-6024-4878011504.02516516525-11585655824164-14-753217817832-135100786624184-18-854019019040-145110857634184-18-955021621650-1601251008834204-18-1076524124165-18014512011034228-18-14280283283806519516013512134228-18-1521003053051008023019016015034.5248-23-17812538138112510027022018817634.5288-25-25215040345715012530025021820434.5308-25-27220050252120015037532028226034.53812-30-39825056855925020044538534531334.54212-3428349530064863530025051045040836444.54616-34380580350762762350300570510465422445216-34425625400838838400350655585535474455816-41492720450914914450350680610560524456020-41--500991991500400755670612576456220-4855584060011431143600500890795730678566220-54675105070013461346700600995900835768566824-548501150)