Double Eccentric DEX Butterfly Valve

The Av-Tek™ DEX butterfly valves have a double offset disc design that allows the disc to move off the seat reducing torque and seat wear. Operation of the DEX may be done with a gearbox and hand wheel or with electric, pneumatic or hydraulic actuator. NSF 61/372 Certified. Tested to AWWA Standards.

View Product Catalog


Double eccentric butterfly valve


6” – 108”

Working pressure

250 psi standard*

Flange connection

ANSI 125 standard*

Top flange

ISO 5211



Face to face

AWWA C504 Standard

Test standard

AWWA C504/ NSF 61/372 Certified

*Upon Request Higher Pressure Ratings
Double Eccentric Butterfly Valve