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How to fix ‘Old Faithful’ sprinkler headThe riser connects the PVC pipe to the sprinkler head. Risers are short lengths of pipe that have male threads on each end. One side screws into the PVC pipe and the other side into the sprinkler ...
Grinnell 'Duraspeed' soldered fire sprinkler head, type 'B', made by Mather & Platt, Manchester, 1933-34. Part of sprinkler collection showing the development of fire sprinkler heads from 1885 when ...
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