SD431X蜗轮伸缩蝶阀蜗轮伸缩蝶阀用途及特点伸缩蝶阀适用于温度≤80℃，公称压力≤1.6MPa的食品，医药、化工、石油、电力、轻纺、造纸等给排水、气体管道上作调节流量和截流介质的作用，具有补偿管道热胀冷缩的功能。其主要特点如下：1、设计新颖、合理、结构独特、重量轻、操作方便、启闭迅速；2、伸缩蝶阀除了能作调节和截流作用、补偿管道温差所产生的热胀冷缩功能外，还能为安装更换、难修阀门提供方便；3、密封部位可调节更换，密封性能可靠等特点。蜗轮伸缩蝶阀设计、制造标准设计标准:GB/T12238-1989法兰连接尺寸:GB/T9113.1-2000；GB/T9113.2-2000；GB/T9115.1-2000；GB/T9115.2-2000压力试验：GB/T13927-1992;JB/T9092-1999蜗轮伸缩蝶阀主要技术参数公称通径DN(mm)50~2000公称压力PN(MPa)0.61.01.6试验压力Ps(MPa)强度试验0.91.52.4密封试验0.661.11.76气密封试验0.60.60.6适用温度≤80℃适用介质空气、水、蒸气、煤气、油品等。驱动形式手动、蜗杆蜗轮传动、气传动、电传动。主要零件的材质零件名称材料阀体铸铁、铸钢、不锈钢、铬钼钢、合金钢蝶板铸钢、合金钢、不锈钢、铬钼钢密封圈橡胶、聚四氟、聚内脂、不锈钢阀杆2Cr13、不锈钢、铬钼钢伸缩管铸铁、铸钢、不锈钢、铬钼钢填料柔性石墨主要连接及外形尺寸公称通径外形尺寸(参考值)法兰尺寸和螺栓孔尺寸(标准值)HH1***大长度***小长度设计长度AB0.6MPamminDD1D2n-d50280309164138151180200140110884-146521/2953371901541721802001601301084-14803983471981661821802001901501244-1810041143732281882081802002101701444-1812551284052402045501802002402001748-1815061394402462062262702802652251998-1820081746122652192424004253202802548-182501021569329524026740042537533530912-183001224574730826528245056044039536312-223501427080232727230045056049044541312-224001630599136830833853558054049516316-2245018325103737031034053558059555051816-2250020360112739233236253558064560056820-2260024445137744137540857066075570566720-2670028505149646040043075055086081077224-2680032560158449944547575055097592087824-309003663016765204604907505501075102097824-30100040680176060053056590075011751120107828-301200487952018675571623100092514051340129532-331400569002363760683722100092516301560151036-3616006411002723860770815100092518301760171040-36180072112428449308308801100980204751970171844-39200080129231271020920970110098022652180212548-42主要连接及外形尺寸公称通径外形尺寸(参考值)法兰尺寸和螺栓孔尺寸(标准值)HH1***大长度***小长度设计长度AB1.0MPamminDD1D2n-d50280309164138151180200165125994-186521/2953371901541721802001851451184-18803983471981661821802002001601328-1810041143732281882081802002201801568-1812551284052402045501802002502101848-1815061394402462062262702802852402118-2220081746122652192424004253402952668-222501021569329524026740042539535031912-223001224574730826528245056044540037012-223501427080232727230045056050546042916-224001630599136830833853558056551548016-2645018325103737031034053558061556553020-2650020360112739233236253558067062058220-2660024445137744137540857066078072568220-3070028505149646040043075055089584079424-30800325601584499445475750550101595090124-3390036630167652046049075055011151050100128-33100040680176060053056590075012301160111228-361200487952018675571623100092514551380132832-391400569002363760683722100092516751590153036-4216006411002723860770815100092519151820175040-4818007211242844930830880110098021152020195044-482000801292312710209209701100980232522302150,48-48)