UP 4pcs CISS one Way Valve Ink Control Valve Suitable for hp Canon Brother Printer CISS Ink cartidge dampers

4color CISS damper compatible for epson/hp/canon/lexmark/brother....(with head printer inkjet cartridge) For the DIY CISS for such model without damper(one way ralve), if the temprerature go up/down sharply, the ink will flow back from ink cartridge to ink tank, also might leak out from printer head. Our damper can avoid such problem. This part is suitable for the ciss cartridge with sponge. Description: Ink backflow has been a problem for Continuous Ink Supply System (CISS) for a long time. Daily temperature fluctuation creats air bubbles which push ink back into external reservoirs. Once air bubbles are pushed into the supply tube, it alters the ink pressure and creating a cascade of events and stops CISS from working. Damper VI was designed to eliminate the ink backflow using technologies used on commercial large format printers. Damper opens automatically when printer is in printing mode and closes automatically when ink is pushed back. This damper system can be used on any CISS/CIS unit Package including : 4pcs damper with 12pcs connector