对夹式衬氟蝶阀D371F46蝶阀是且随阀杆一起转动的蝶板作启闭件，用于实现阀门的开启和关闭的目的，蝶阀在管路中除了起节断和截流用，另外蝶阀还有体积小，重量轻，结构简单等优点，蝶板旋转90°即可实现启闭过程，又由于转轴两侧蝶板受介质作用力近似相等，转矩相反，因此启闭力矩较小。蝶阀其基本类型有两种，即D71F4和D71F46（中线）全衬里型对夹蝶阀，采用对分两片式阀体组合，阀座与阀体内衬一体化，阀门工作时只有全塑阀座与衬塑蝶板与介质接触，产品可承受“除熔碱金属和元素氟”外的任何介质腐蚀，其中D71F46阀杆与蝶板（锻）为一体，表面均匀覆一层FEP。阀体通道内表面光滑，流体阻力小，完全达到介质的零泄漏。D371F46对夹式衬氟蝶阀结构特点中线蝶阀为整个阀板与阀座在360°圆周内同心（中线）具有双向密封功能，压力、流量可自由调节。四级加载弹性密封，绝对保证了阀体内外的零泄漏；轴头端面采用弹性O型圈和轴肩处刚性垫圈、弹性橡胶垫组合；阀座镶在有弹性的阀体槽内；轴头、蝶板圆周边接处的特殊过渡曲线与阀座的合于过盈；轴的径向采用O型圈与金属垫的组合；采用可调弹性弹子位定，定位准确，结构简单。D371F46衬氟蝶阀主要零部件材料表序号零件名称灰铸铁铸钢不锈耐酸铸钢超低碳不锈耐酸铸钢ZCPRPLRL1阀体/阀盖HT250WCBCF8CF8MCF3CF3M2蝶板WCB35CF8CF8MCF3CF3M3阀杆1Cr132Cr131Cr18Ni9Ti1Cr18Ni12Mo2Ti00Cr18Ni10000Cr17Ni14Mo24衬里/阀座PTFE(F4),PCTEF(F3),FEP(F46),PFA(可溶F4),PP,PO5密封圈FPM(氟橡胶)FPM(氟橡胶)6弹性条(垫)Si(硅橡胶)Si(硅橡胶)7调节定位座0Cr18Ni90Cr18Ni91Cr18Ni9Ti1Cr18Ni12Mo2Ti00Cr18Ni1000Cr17Ni14Mo28紧固螺栓35351Cr17Ni21Cr17Ni21Cr18Ni9Ti1Cr18Ni9Ti9螺母45450Cr18Ni90Cr18Ni90Cr18Ni90Cr18Ni910操作手柄ZL101D371F46衬氟蝶阀主要外形和连接尺寸公称通经LDD1D2fbZ-φdDD1D2fbZ-φdDN(mm)NPS(inch)PN1.0MPaPN1.6MPa403/233145110853184-φ18145110853184-φ18502431601251003204-φ181601251003204-φ18655/2461801451203204-φ181801451203204-φ18803461951601353224-φ181951601353228-φ181004522151801553228-φ182151801553248-φ181255562452101853248-φ182452101853268-φ181506562802402103248-φ232802402103288-φ182008603352952653268-φ2333529526533012-φ23250106839035032032812-φ2340535532033212-φ25300127844040036832812-φ2346041037543412-φ25350147850046042843016-φ2352047043543816-φ254001610256551548243216-φ2558052548544016-φ304501811461556553243220-φ2564058554544420-φ305002012767062058543420-φ2570565060844620-φ346002415478072568553620-φ3084077071855420-φ417002816589584080054024-φ3091084078855424-φ4180032190101095090554424-φ34102095089855424-φ419003620311101050100554628-φ341120105099855428-φ4110004021612201160111555028-φ3412551170111056028-φ4812004825414501380132555632-φ41)