HDPE square flanged flap valve

Hdpe flanged Flap valve which depends on its gravity and pressure difference inside and outside and shoot the door, open and close automatically to achieve the effect of overflow and non-return valve devices, including tidal gate valve, check valve or one-way valve. The main performance parameters: 1. Material: GRP BMC HDPE Cr13 Q235 2.Temperature: -20°C—60°C (requirements under the maximum design 3.temperature 120 °C flap valve) 4. Working pressure: 1—1.6MPa 5.Opening angle of the cover: >75° 6.Closed time: <2s 7. Open water level: (1).GRP cover shoot inside and outside the door open when the water level difference of ≥ 40mm (2). HDPE cover shoot inside and outside the door open when the water level difference of >5mm The open water level associated with the flap valve’s open angle weight, diameter size of the relevant. The open water level can be designed according to user needs. 8. Proportion: GRP flap valve 1.6¬—1.9 g/cm3 HDPE flap valve 0.94-1.17g/cm3 9.Save energy: ≥10% 10.Design head: ≤15m( HDPE flap valve ≤5m)HDPE (High Density Polyethylene) flap valve characteristics 1. Material density of HDPE products density is usually 0.94-1.17g/cm3 which is about steel 1 / 7. Therefore, it is very low head drainage. When the door is covered all immersed in water, drainage water level as low as 5 mm. 2. Impact Excellent chemical stability, good oil resistance 4. Water and the tiny <0.01%, permeability is low. resistance and good cold tolerance, resistance to environmental stress cracking resistance 3. 5. Insoluble in any organic solvent, acid, alkali and corrosive salts.High corrosion and erosion resistance.