Double Flanged U Section Butterfly Valves

RESILIENT SEATED BUTTERFLY VALVES

O.D. when flanged in piping, the seat thickness, and the type of service (media) for which the valve is being used. In determining the T su values for Bray resilient seated butterfly valves, Bray has developed Seating/Unseating Torque Charts incorporating all bearing friction and stem seal friction torques for three classes of services for both

  Valves, Flanged, Butterfly, Butterfly valves