Snatchblock
A pulley used gain a mechanical advantage when using wire rope or cable. Related to the "Block and Tackle"
If an bundle extractor isn't available and a forklift won't reach it,a heat exchanger bundle may be stuffed into the shell using a winch(or tugger) cable rove through a snatchblock on the shell and back to a strongback thats attached to the tubesheet.
Snatchblock by The Pipe Doctor January 25, 2009
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