Cast Iron Flap Gates
Rodney Hunt circular and rectangular flap gates are designed to withstand stresses from high seating heads and to maintain maximum sensitivity of unseating heads.
Backflow Prevention in Free Discharge Applications
- Backflow prevention in free discharge
- Cast or fabricated, rigid or flexible designs
- Circular or rectangular opening upto 96′ for gravity flow
Gravity Operated
Minimal water pressure is needed for operation as the flap gate functions utilizing gravity. The flap opens when the head in the pipe, or conduit, exceeds 0.2 feet (0.6m) above the head in the receiving body of water. The flap closes when the head in the receiving body of water exceeds the head in the pipe or conduit. There is minimal head loss when fully open.
Series FV-SPR
• Low cost backflow prevention
• Cast Iron with stainless steel pivot hardware
• Resilient seated
• Single Pivot
• 4” – 30” (100mm – 750mm)
Series FV-AC and FV-ACP
• Engineered for high seating heads
• Designed to handle forward and reverse pump surges
(Series ACP)
• Spring bumper limits disc travel to 90º (Series ACP)
• Anti-locking bar eliminates flap over-turn damage
• Cast Iron with stainless steel pivot hardware
• Cast iron to resilient or bronze seating
• Adjustable double pivot design
• 4” – 96” (100mm – 2400mm)
Series FV-AR
• For rectangular or square openings
• Cast iron to resilient or bronze-to-bronze seating
• Double pivot design
• 12” x 12” to 144” x 144” (300mm x 300mm –
3650mm x 3650mm)
• Custom designed for specific head conditions
Series FG-60
• Circular fabricated stainless steel
• Resilient to stainless steel seating
• Hinges feature UHMWPE self-lubricating bushings
• Wall or pipe-mounted
• 6” – 96” (150mm – 2400mm)
Series FR-40
• For rectangular or square openings
• Fabricated stainless steel
• Neoprene to stainless steel seating
• Hinges feature UHMWPE self-lubricating bushings
• 12” to 96” (300mm – 2400mm)
• Custom designed for specific head conditions
Flexible Flap Gate
• For quiet operation
• Opens under very low unseating head
• Withstands slamming action of pump discharge and
wave action
• Stainless steel frame with flexible reinforced
neoprene flap
• Neoprene to neoprene seating for low leakage
• Custom sized for application
