Duckbill valve is also called rubber duck mouth，rubber check valve and flexible rubber check.Installation structure can be divided into: 1. Socket type duckbill valve XF - T installed in the export of drainage pipe. 2. Flange duckbill valve, XF - F installed at flanged ends of the export of the drain. 3. Installation plate duckbill valve XF - F installed on the outlet end of the structures. 4. Built-in duckbill valve XF - F export terminal installed in urban sewage and rainwater system. 5. Mortar or concrete pipeline duckbill valve XF - F installed in mortar or cement pipe ends.
Duckbill valve is mainly installed in the middle of the urban storm sewer. Elastic rubber structure, free maintenance, prevent intrusion, solid particles and can still tightly closed; Will not freeze when opening and closing; Open the head loss less; make for users to the special requirements of different working condition, material quality, durable, long service life.
