Quote:
Originally Posted by Tmac1720
Harland and Bluff often offered the purifier in sequence with a clarifier arrangement but this was rarely taken up by the owner. Most common was a dual purifier arrangement so the internal filters could be rotated for maintenance and cleaning.:
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Was it beyond the wit of H&W to fit a valve chest that would facilitate both modes of operation. The lads in the Design and Drafting Offices were too busy playing pontoon.