Get a cheap pump and an A/C vacum pump pull the cheap hand pump of the tube hook the A/C vacum pump to it and then to an air compressor youll get some real SUCTION from that for $30 total
Ive got a mega vac pump its got 2 cylinders and the pressure gage and the whole works i paid 500$ for it you can see it at drjoelkaplan.com
i dont have enough time a day to use it and its not easy to do when you are home you never know if someones gonna come by unexpected so its difficult for me to use.....
for sale 300$ used it about 10 times completely sanatised you can put it in the dishwasher.....