... certificate 3.Similar to Airtac type,Unid Power: electric .2 port electric water valve 2W( small port type). 2.We ... function, handsome shape, and large flow.It is a switch element most normally used in modern industrial pipeline for water ,oil.2 Port water ... 082W040-102W160-102W160-152W200-202W250-252W350-352W400-402W500-50FluidAir, Water, OilActionDirect Acting, Normally ClosedType of Actuation2 port 2 ...