Sell Composite Material Flap Check Valve, flap gate valve

Description

Flapper check valve Cost-Effective Valve Superior Quality Backflow Prevention Supply Range is From DN**0mm to DN***0mm Low Headloss and Maintenance Free
Features and Benifits of flap valve
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
Nominal diameter:    DN**0mm to DN***0mm, other sizes available
Maximum working pressure:    5.0 meter water
Operating temperature:    **0℃ - *0℃
Opening angle    >*0°
Corrosion resistance     Yes
Applicable media     water, river water, seawater, living water, industrial sewage.