duckbill check valve:
1.DN32-DN500
2.the diversity of the products
3.manufacturer,competitive price
3.ISO certification

duckbill check valve

Rubber Duckbill Check Valve 
1.Size:DN50-DN3000 
2.Tpye:slip,flange,double flange 
3.Materail:NR.CR 
4.High quality

 Rubber Duckbill Check Valve

1.Quiet operation
2.Zero maintenance
3.Design prevents backflow
4.Will seal around solids
5.Designed to withstand wear
6.Tough enough for abrasive slurries..