Note:  1. 1~5 are suitable for the place that the location is lower than sewage source with oxygen source.

           2. 6~9 are suitable for the place that machine installation location is lower than sewage source without oxygen source.

           3. 10~13 are suitable for the place that machine installation location is higher than sewage source with oxygen source.

           4. 14~17 are suitable for the place that machine installation location is higher than sewage source without oxygen source.

           5. L is for Self-flow, X is for Self-suction, Y is for oxygen concentrator.