Spray feed section are provided with circular tube having holes at the bottom.
| Cat. Ref. | DN | DN1 | L | L1 | Holes |
| FR3 FR4 FR6 FR9 FR12 |
80 100 150 225 300 |
25 25 40 40 40 |
200 250 250 250 300 |
100 125 125 125 150 |
21x2mm 21x2mm 27x2mm 27x2mm 30x3mm |
For bigger columns, spray feed pipe with unequal tee should be used. |
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