W
W. Gessmann
Wadeco
WALRUS
Walther Praezision
Walther-Werke
Watson-Marlow
WEBER-HYDRAULIK
WEBOMATIC
Webtec (Hydraulic measurement and control)
WEDECO
Weforma Dämpfungstechnik
WEIMA
Weintek
WEKA AG
WERIT
WEST Control Solutions / Instruments
Westelettric
Westward
Wheelabrator
Wieland
Wilcoxon
Wilkerson
WILO
Winkelmann
Winner Hydraulics
Wolke