对夹式蝶阀

ISO 5752/BS EN593/MSS SP-67/API 609

凸耳式蝶阀

ISO 5752/BS EN593/MSS SP-67/API 609

U型法兰蝶阀

ISO 5752/BS EN593/MSS SP-67/API 609

双法兰蝶阀

ISO5752/BS EN593

双偏心蝶阀

BS EN593

AWWA C504 蝶阀

AWWA C504