We sell USED equipment.  In most cases we are unable to test the equipment for its specific application.  So PLEASE know what  you are buying.   We are happy to share any information we have on any product to help you make an informed decision.   PLEASE carefully review each item description and photos.   If you have questions about what is included or its condition, please ask before you buy Pneumatic and electric  diaphragm pumps !   All items are sold AS IS.   North Texas Surplus makes no warranties, express or implied, and North Texas Surplus expressly excludes and disclaims any warranty of merchantability, non-infringement or fitness for a particular purpose.  North Texas Surplus assumes no responsibility for any inaccuracies, including without limitation any pictures, descriptions or other information relating to the assets as contained on the this website, or other communications, electronic or otherwise.