不锈钢法兰球阀主要用于截断或接通介质，也可用于流体的调节与控制。与其它阀类相比，球阀具有如下的一些优点：1、流体阻力小，球阀是所有阀类中流体阻力  的一种，即使是缩径球阀，其流体阻力也相当小。2、开关迅速、方便，只要阀杆转动90°，球阀就完成了全开或全关动作，很容易实现快速启闭。3、密封性能好。球阀阀座密封圈一般采用聚四氟乙烯等弹性材料制造，易于保证密封，而且球阀的密封力随着介质压力的增加而增大。1.62.54.0强度试验ShellTest2.43.86.0水密封试验WaterSealTest1.82.84.4气密封试验AirSealTest0.4-0.7主要外型尺寸MainouterSize1.6MPaDNLDD1D2bn-φdHD0凸面法兰FQ41FQ41PPL16C16P16R15130956545144-1478140201401057555144-1484160251501158565144-14951803216513510078164-181502504018014511085164-1815030050200160125100184-1817035065220180145120204-1819535080250195160135208-18215400100280215180155208-18250500125320245210185228-18265600150360280240210248-232708002004003352952652612-2333012002.5MPa15130956545164-14103140凸面法兰RFQ41FQ41PPL2525P25R201401057555164-14112160251501158565164-141231803216513510078184-181502504018014511085184-1815630050200160125100208-1817235065220180145120228-1819735080250195160135228-23222400100280230190160248-23253500125320270220188288-25275600150360300250218308-252868002004003603102783412-253401200规格主要尺寸SizeMainDimensions4.0MPaDNLDD1D2D6bn-φdHD0凹凸法兰MFMQ41FQ41PPL4040P40R1513095654540164-1410314020140105755551164-1411216025150115856558164-14123160321801351007866184-18150250402001451108576184-181562505022016012510088204-1817235065250180145120110228-1819735080280195160135121228-18222450100320230190160150248-23253450125400270220188176288-25275600150400300250218204308-252868002005503753202822603812-3034012006.4MPa15165105755540184-14105140凹凸法兰MFMQ41FQ41PPL6464P64R20190125906851204-18125160252161351007858224-18135250322291501108266244-23150350402411651259576244-231653505029217513510588264-2317545065330200160130110288-2320045080356210170140121308-23210600100432250200168150328-25250700125508295240202176368-302951100150559340280240204388-343401500