Double Offset Butterfly Valve
YDF double offset butterfly valves can achieve zero leakage easily and ensure sealing more reliable because of the resilient seat design. Resilient seat design also can achieve low torque so as to cost-effective of choosing actuator. Soft materials, such as PTFE, have excellent applicability to acid or other media, thus it’s use improves applicability of valves to various services.


Design Feature


Product Range

Double block and bleed
Zero leakage
ISO 5211 top flange
Less seat wear, Low torque
Super long usage life
Self-driven machinery sealing structure
Optional low emission packing
Optional fire safe design
Optional various seat materials






Body Materials

Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel

Seat Materials


End connection

Wafer, Lug, Double Flange


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