Double Offset High Performance Butterfly

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.

Forum’s ABZ™ line of double-offset butterfly valves include 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.

ABZolute Seal 400 Series Double Offset High Performance Butterfly

Features (Elite 400 Series)
  • Two- to 24-inch sizes
  • Wafer and lugged designs
  • Underneath drawn gland packing for easy adjustment and direct actuation mounting
  • Direct-mount operation
  • Positive stem retention system above packing
  • 316 stainless steel (SS) bearings for long service life
  • Heavy-duty seat retainer plate/cap screws
  • Leak-resistant seat retainer seal
  • Offset disc taper pins for greater yield point than stem
  • Machined disc position stop for maximum seat and seal life
  • 316 SS disc for quick release from seat, lowered torqued, smooth operation
  • Maximum strength stem for high-torque applications
  • Compliance includes: API 598/607/609/MSS-SP-68 standards


Elite Seal 400 Series Double Offset High Performance Butterfly

  • Two- 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 applications
  • 316 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 stem
  • Numerous disc alloys available
  • Compliant to ANSI 150/300/600 standards
  • Compliant to API 598/607/609/MSS-SP-68 standards

ABZolute Cutsheets

150# Double Offset

Wafer
Lug
Flanged

300# Double Offset

Wafer
Lug
Flanged

Elite Cutsheet

150# Double Offset Wafer

300# Double Offset Wafer

Elite Engineering Data