VAG reserves the right to make technical changes and use mate-
rials of similar or better quality without express notice. The pictu-
res are non-binding.
Table of Contents
1 General
3
1.1 Safety
3
1.2 Proper use
3
1.3 Identification
3
2 Transport and Storage
3
2.1 Transport
3
2.2 Storage
4
3 Product features
4
3.1 Features and function description
4
3.2 Applications
5
3.3 Performance limits
5
3.3.1 Cavitation
5
3.3.2 Maximum permissible flow velocity
5
3.4 Permissible and impermissible modes of
operation
6
3.5 Special type with UVV safety interlock
7
4 Installation into the pipeline
8
4.1 Conditions required on site
8
4.2 Installation location
8
4.2.1 Installations in the pipeline upstream and
downstream of the valve
8
4.2.2 Gear positions
10
4.3 Installation position
11
4.4 Assembly instructions and fittings
12
5 Set-up and operation of the valve
12
5.1 Visual inspection and preparation
12
5.2 Function check and pressure test
12
5.3 Putting electric actuators into operation
12
6 Actuators
13
6.1 General
13
6.2 Operating torques
13
6.3 Emergency manual operation (handwheel)
13
6.4 Assembly of the electric actuator
14
6.5 Valves with VAG HYsec hydraulic brake-and-lift
units
14
7 Maintenance and repair
14
7.1 General safety instructions
14
7.2 Inspection and operation intervals
16
7.3 Maintenance work and replacement of parts
16
7.3.1 Design
16
7.3.2 Recommendations for the replacement
of parts
16
7.3.3 Cleaning and lubrication
16
7.3.4 Replacement of the profile seal
16
7.3.5 Replacement of the O-rings in the
bearing
16
7.3.6 Tightening torques for screws
17
8 Trouble-shooting
18
9 Contact
19
