Flap gates are used as an efficient backflow prevention solution in most free discharge applications. These are used for automatic drainage from outfall structures to river , estuaries and sea and for preventing reverse flow flood / tide from river, estuary and sea to plant. These are gravity operated and need minimal water pressure for operation. The flap opens when the head in pipe or conduit exceeds 0.2 feet 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 the conduit. When fully open the flap gate offers a very low head loss. These are offered in varied designs and various materials of construction such as Cast Iron / Ductile cast iron / Stainless steel / Super Duplex stainless steel / HDPE / Composite etc to suit the intended application.
| SERIES : A-601 – CAST IRON FLAP GATES | ||
 |
Opening Size range | 100 mm to 750 mm Higher sizes on request |
| Head Range | Seating head up to 6 m. | |
| Applicable Standards | As per Jash design. | |
| Mounting | Face Wall Anchored | |
| Sealing system | Resilient Seal arrangement | |
| Technical Features | Click to open | |
| Drawing & Data Sheet | Click to open | |
| SERIES : A-602 – CAST IRON FLAP GATES (FC-AC & FV-ACP) | ||
 |
Opening Size range | 300 mm to 1500 mm (FV-ACP design) 300 mm to 2700 mm (FV-AC design) Higher sizes on request |
| Head Range | Suitable for high seating head as per requirement. | |
| Applicable Standards | As per Jash design. | |
| Mounting | Face Wall Anchored | |
| Sealing system | Resilient Seal arrangement | |
| Technical Features | Click to open | |
| Drawing & Data Sheet | Click to open | |
| SERIES : A-603 – CAST IRON FLAP GATES (FV – AR) | ||
 |
Opening Size range | 300 mm to 2700 mm Higher sizes on request |
| Head Range | Suitable for high seating head as per requirement. | |
| Applicable Standards | As per Jash design. | |
| Mounting | Face Wall Anchored | |
| Sealing system | Resilient Seal arrangement | |
| Technical Features | Click to open | |
| Drawing & Data Sheet | Click to open | |
| SERIES : A-611, 612 – STAINLESS STEEL FLAP GATES | ||
 |
Opening Size range | 300 mm to 2700 mm Higher sizes on request |
| Head Range | Suitable for high seating head as per requirement. | |
| Applicable Standards | As per Jash design. | |
| Mounting | Face Wall Anchored | |
| Sealing system | Resilient Seal arrangement | |
| Technical Features | Click to open | |
| Drawing & Data Sheet | Click to open | |
| SERIES : A-641, 642 – HDPE FLAP GATES | ||
 |
Opening Size range | 300 mm to 1500 mm Higher sizes on request |
| Head Range | Suitable for low head conditions. | |
| Applicable Standards | As per Jash design. | |
| Mounting | Face Wall Anchored | |
| Sealing system | Resilient Seal arrangement | |
| Technical Features | Click to open | |
| Drawing & Data Sheet | Click to open | |
| SERIES : A-652 – COMPOSITE FLAP GATES | ||
 |
Opening Size range | 300 mm to 2700 mm Higher sizes on request |
| Head Range | Suitable for low head conditions. | |
| Applicable Standards | As per Jash design. | |
| Mounting | Face Wall Anchored | |
| Sealing system | Resilient Seal arrangement | |
| Technical Features | Click to open | |
| Drawing & Data Sheet | Click to open | |
| SERIES : A-672 – FLEXIBLE FLAP GATES | ||
 |
Opening Size range | 300 mm to 1200 mm Higher sizes on request |
| Head Range | Suitable for low head conditions. | |
| Applicable Standards | As per Jash design. | |
| Mounting | Face Wall Anchored | |
| Sealing system | Resilient Seal arrangement | |
| Technical Features | Click to open | |
| Drawing & Data Sheet | Click to open | |