Description
Also known as high-performance butterfly valves, double-offset valves feature two offset stems that offer especially long life due to reduced contact between valve discs and seats. This type of valve can be especially helpful if your operations involve higher pressures and particulate fluids.
Our ABZ™ line of double-offset butterfly valves includes the Elite 400 and ABZolute High-Performance series. Built on the most advanced technology currently available in the valve industry, these rugged valves are designed to offer improved safety and maximum life even in high-pressure and high-temperature applications. All of our high-performance valves are manufactured to the highest industry technical standards that include the American Petroleum Institute (API), the American National Standards Institute (ANSI) and other international standards of quality.
FEATURES ABZolute Seal 400 Series Double Offset Butterfly2- to 72-inch sizesSoft-seated, metal-seated and fire-safeFree-floating seat design with direct-mount operationUnderneath drawn gland packing for easy adjustment and direct actuation mountingWafer, lugged, double-flanged, butt-welded in double- and triple-offset designsField-repairable body and disc seatsHigh-temperature graphite stem packing to prevent fugitive emissions and fire hazardsInternal keyed and pinned connection to align disc seal to body seatExtended neck for extra pipe insulationBlowout-proof stem retention system above packing areaDie-formed graphite rings for positive sealsMachined disc position stop for maximum seat and seal lifeMaximum strength stem for high-torque applications316 stainless steel (SS) bearings for long service lifeAdvanced, free-floating, pressure-assisted, solid seat design for interference and pressure-assisted sealRobust, multi-bolted seat retainer plate316 SS disc for quick release from seat, lower torques and smoother operationsOffset disc taper pins for greater yield point than stemNumerous disc alloys availableCompliant to ANSI 150/300/600 standardsCompliant to API 598/607/609/MSS-SP-68 standards
ABZolute High Performance Engineering Data
Torque Charts
Class 150Class 300 & 600
Temperature Charts
Class 150 (Soft Seat)Class 150 (Fire Safe & Metal Seat)Class 300 (Soft Seat)Class 300 (Fire Safe & Metal Seat)Class 600 (Soft Seat)Class 600 (Fire Safe & Metal Seat)
Seat Design
SoftMetalFire Safe
Standards and Construction
General StandardsParts
Bolt Data
Class 150 WaferClass 150 LugClass 300 WaferClass 300 LugClass 600 WaferClass 600 Lug
Other
Class 150 Cv ChartClass 300 Cv ChartClass 600 Cv ChartTest Procedures