check these out. how do you change the pump direction on these pumps. is there a switch, it doesnt look like the blue fitting can attach to the tubing in order to fill the sack. the way it is set up is only good for emptying sacs unless there is a switch on the pump itself. see if you can give me some light.
http://cgi.ebay.com/FAT-SAC-1100-GPH...QQcmdZViewItem
http://cgi.ebay.com/FAT-SAC-1100-GPH...QQcmdZViewItem
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