What is a flow restrictor, and do I need one?
A flow restrictor is a device designed to constrict the drainage pipe size between a plumbing fixture and the Grease Interceptor that services it, and thus, reduce the drainage flow so that a smaller Grease Interceptor can be used. Flow restrictors cause sinks, and the fixtures they service, to discharge very slowly (by as much as 10 times slower) and are extremely susceptible to causing drain blockages. Flow restrictors are required wherever small “box-type” Grease Interceptors are used. Removing a flow restrictor will severely reduce the Grease Interceptor’s efficiency. We strongly recommend you avoid Grease Interceptors that require a flow restrictor, and if you have a flow restrictor you never remove it. For more information see Flow Restrictors.
