[PSUBS-MAILIST] Vacum test

["glen brown" <glenbrown@vodamail.co.za>]

Hi
Can anyone be so kind to tell me if any one has used vacum to test there sub 
for leaks and the integrity of there hull when i used to dive for diamonds 
on the west coast of south africa we used to prime our gravel pipes and 
pumps with vacum either using a venturi ,milkmachine, car airconditioner 
motor ect I remember one day we had nothing to use so i decided to use a 
300hp tractor engine making an adapter to the air intakeof the engine and 
using a 44gal drum as a safety resivoir to protect the engine from water i 
clearly remember how the drum was crushed by the pressure differance any 
coments.
All the best
Glen S.A 




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