Features

• No springs, levers, seals or packing
• Non-slam
• No maintenance
• High Backpressure Rating
• 1”-2” Cracking Pressure
• Will not corrode, warp or freeze open or shut
• Available in diameters from 4" (100mm) to 96” (2400mm)

Materials of construction

• Body (WF-1 only)
  • Carbon steel (Std.)
  • Ductile iron
  • 304 Stainless Steel
  • 316 Stainless Steel
• Disc / Rod / Fasteners
  • 304 Stainless Steel (Std.)
  • 316 Stainless Steel
  • Special Alloys Available
• Ply-Reinforced Membrane
• Elastomer Information