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開封手動扇形眼鏡閥（盲板閥） Manual fan-shaped glasses valve(Blind flange valve) F43X、F343X-0.5/1/1.5
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開封電動眼鏡閥（盲板閥） Electric glasses valve (Blind flange valve) F943X-0.5/1/1.5
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開封電動圓形百葉式調節蝶閥 Electric round type shutter-like adjusting butterfly valve DBD-0.05
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開封電動矩形百葉式調節蝶閥Electric rectangle type shutter adjusting butterfly valve FDBD-0.05
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開封法蘭式通風蝶閥Flange venting butterfly valve D41W、D341W、D641W、D941W
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開封伸縮蝶閥 Expansion butterfly valve SD341、SD343X/H/F
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開封雙偏心法蘭式、管網式蝶閥 Double eccentric flanged butterfly valve,pipeline butterfly valve D342X、D642X、D942X、GD342X
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開封API美標凸耳式蝶閥 API Lug Type butterfly valve API 815L、830L Series
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開封API美標蝶閥 API American standard butterfly valve API 815W、830W Series
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開封對焊式三偏心硬密封蝶閥 Butt-weld ends metal seated triple eccentric butterfly valve D363、D663、D963H/Y/W
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開封對夾式三偏心硬密封蝶閥 Wafer type metal seated triple eccentric butterfly valve D373、D673、D973H/Y/W
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開封法蘭式三偏心硬密封蝶閥 Flanged metal seated triple eccentric butterfly valve D343、D643、D943H/Y/W
