Composite Material Flap Valves

Composite Material Flap Valve Cost-Effective Valve Superior Quality Backflow Prevention Supply Range is From DN300mm to DN3000mm Low Headloss and Maintenance Free

Composite Material(FRP) Flap Valve
FRP(Fiber Reinforced Plastics)

• Customized Shape or Other Shape Available
• Reliable backflow prevention
• Smart design eliminates maintenance  
• Corrosion resistant, will not warp or freeze open or shut
• No cracking pressure needed, low head loss, can be completely open to flood discharge 
• Environmentally-friendly

Specifications

Components/Materials/Functions NO. Components Materials  Functions  1 Seat FRP Support 2 Flange FRP Fasten 3 Gate FRP Flow Control 4 Seal Silastic Seal 5 Sleeve HDPE Antiabrasion 6 Hinge Pine SS 304 Hinge  7 Nut SS 304 Fasten 8  Cotter Pin SS 304 Fasten 9 Eye Bolt SS 304 Support 10 Hex Flange Bolt SS 304 Seal

Integrate FRP Flange Note: Usually the flange drilling standard is based on DIN PN6, other standards avaible as ANSI CLASS150/300, DIN PN16/25, JIS10 etc. For special application, please contact GYLDT for detailed design.

The FRP density is usually 1.8-2.1g/cm which is about steel 1 / 4, the smart cavate gate design would allow change specific gravity to adapt to flow rate.