气动球阀:DN40.DN50.DN80.DN100.DN150.DN200.气动隔膜阀:DN25.DN40.DN50.DN80.DN100.DN150.DN200.气动碟阀:DN40.DN50.DN80.DN100.DN150.DN200.DN250.球阀，隔膜阀是法兰式的，碟阀对夹式的。技术要求:阀体碳钢，阀座衬胶，阀门衬塑，阀杆不锈钢。带回信器，4-20mA以上阀门请报价，谢谢！

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