Intelligent Negative pressure ink supply system,mainly use in negative Ink supply.It assure the statality of print heads during printing,mostly for UV printing. 

Features.. 

(1) Intelligent adjustment of negative,, no need manual.. more stable.

(2) 15L air tank, to assure pressure stability.

(3) air pump works only when the air pressure needed.

(4) supply continuous stable air pressure.

(5) night mode, air tank keeps pressure makes it anytime for printing.. 

(6) avoid the noises,, make volume pumps a longer life..