This reducer is required when adapting the Mazzei jet to 1 1/2″ pipe on a typical concrete installation. This reducer fits on the inside of 1 1/2″ pipe. No bulkhead needed. After all surfacing and waterproofing is done to a concrete pond you would just cut the line flush with the finished surface and insert inside of the pipe. One is required per jet installed.
1 1/2″ to 3/4″ Special Reducer for Inside of 1 1/2″ Pipe