精选优质文档-倾情为你奉上闸阀Gate valve平行双闸板Double disc parallel seat楔形双闸板Split wedge挠性楔形闸板Flexible solid wedge楔形单闸板Solid wedge塞型闸阀Plug gate valve疏通型闸阀Through conduit gate valve截止阀Globe valve球心型阀盘Globe type disc塞型阀盘Plug type disc可转动的阀盘Swivel disc节流阀Throttle valve针阀Needle valve角阀（角式截止阀）Angle valveY型阀（Y型阀体截止阀）Y-valve (Y-body globe valve)球阀Ball valve三通球阀3-way ball valve装有底轴的Thunnion mounted耐火型Fire safe type浮动球型Floating ball type防脱出阀杆Blowout Proof stem蝶阀Butterfly valve对夹式（薄片型）Wafer type凸耳式Lug type偏心阀板蝶阀Offs
