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 Butterfly
- 2- to 72-inch sizes
- Soft-seated, metal-seated and fire-safe
- Free-floating seat design with direct-mount operation
- Underneath drawn gland packing for easy adjustment and direct actuation mounting
- Wafer, lugged, double-flanged, butt-welded in double- and triple-offset designs
- Field-repairable body and disc seats
- High-temperature graphite stem packing to prevent fugitive emissions and fire hazards
- Internal keyed and pinned connection to align disc seal to body seat
- Extended neck for extra pipe insulation
- Blowout-proof stem retention system above packing area
- Die-formed graphite rings for positive seals
- Machined disc position stop for maximum seat and seal life
- Maximum strength stem for high-torque applications316 stainless steel (SS) bearings for long service life
- Advanced, free-floating, pressure-assisted, solid seat design for interference and pressure-assisted seal
- Robust, multi-bolted seat retainer plate
- 316 SS disc for quick release from seat, lower torques and smoother operations
- Offset disc taper pins for greater yield point than stemNumerous disc alloys available
- Compliant to ANSI 150/300/600 standards
- Compliant to API 598/607/609/MSS-SP-68 standards
ABZolute High Performance Engineering Data
Torque Charts
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)
ABZolute 400 Series Double Offset Butterfly Valves - Datasheet
412, 432 - ABZ Elite Seal, ASME Double Offset, High Performance Butterfly Valves - Lug Style
403, 404, 423, 424, 453, 454 - ABZ ASME Double Offset, High Performance Butterfly Valves – Double Flanged Style
401, 421, 451 - ABZ ABZolute Seal, ASME Double Offset, High Performance Butterfly Valves - Wafer Style
411, 431 - ABZ Elite Seal, ASME Double Offset, High Performance Butterfly Valves - Wafer Style