Walther Systemtechnik WDV-01 - Functional Principle

Rev. 1.2
Assembly Instructions – Dosing Valves WDV-0x
Page 8 of 34
Walther Systemtechnik GmbH – D 76726 Germersheim
Telefon: +49 (0)7274-7022-0 Telefax: +49 (0)7274-7022-91
http://www.walther-2000.de – info@walther-2000.de
4.3 Functional Principle
The pneumatic part of the dosing valve is controlled by a 5/2-way valve. This initiates the grease dosing. The
dosing pressure depends on the lubricant feed pressure (medium).
In order to obtain a high quality and repeatability of the dosing process, the complete cycle must be complet-
ed. This means that the control piston must be driven from the starting position to the dosing position and
then back to the starting position.
LEGEND
Pos. Description
1 Support bracket
2 Connection for medium G 1/8“ (in the back of the support frame)
3 Connection for air ø4 mm
4 Regulating screw
5 Dosing output
6 Fastening screw
5
3
3
4
1
2
6