The model 541 feed pipe is a piping system of headers, lateral branches and down pipes, and is used when liquid is fed from outside the column onto a distributor/redistributor. Each feed pipe meters flow to one or more appropriate feed areas, matching the hydraulic requirements of the distributor to prevent excessive turbulence and control the horizontal flow velocity in the distributor.
The model LFP542 feed system employs a feed pipe which feeds a parting box or a calming box, which in turn feeds a distributor. It can operate over a wider range of flow rates as compared to the model LFP 541, but it may require slightly more tower height.
The model LFP 541/542 is attached to an internal column flange and/or by tower wall clips.