The device reduces internal system oil pressure when the pumps

stands idle and allows to vent trapped air, i. e. after drum change

or common system start-up. The product works with MATO EP pumps,

starting year 6/2018. During system operation some oil re-flows into

the drum. For this reason it is indispensable the reflow hose (1,5 m)

is connected to the drum/reservoir.

The device comes with a 2" and 3/4" threaded connector for drum

and tank mounting.