W36(9)57series three-eccentric sealing butterfly valve

Detailed Product Description

Unique pressure sealing design can keep shutting off when flow direction was changed,seal friction betwwen disc and seat is zero,so perfectly keep the sealing effect and life,it is applied for the adjut and shut off of corrosive gas or liquid,lower unseating torque,equip of expanded graphite and metal seat can fully accord with firesafe,maintenance cost is very lower.