US PATENT SUBCLASS 291 / 8
.~.~ Bypass

Current as of: June, 1999
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291 /   HD   TRACK SANDERS

3  DF  FLUID DELIVERY {7}
7  DF  .~ Gravity conversion {3}
8.~.~ Bypass

DEFINITION

Classification: 291/8

The gravity-feed pipe has a cut-off valve and the sand-blast feed is through a by-pass around the gravity cut-off valve.