Working principle:
It is adopted compound material, degrees 30-40 incline with a piece of active plate in the place of funnel where flow water down. This plate close at ordinary time, when it is rain, the plate will be open automatically under the force of rainwater, rainwater enter sewer through the defender. It is valid to solve the problem that closing rain water opening without influencing exhaust water normally, therefore prevent mosquitoes, cockroaches and other insects flying out, stopping their main concealing place and multiplying resources.
Products Specification:
It is depend on the customers demands.
The Scope of usage :
It is used widely for rainwater opening of sewer in municipal engineering, realty agency, and residential community.