VAG reserves the right to make technical changes and
use materials of similar or better quality without express
notice. The pictures 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
6
4 Installation into the pipeline
7
4.1 Conditions required on site
7
4.2 Installation location
7
4.2.1 Installations in the pipeline upstream and down-
stream of the valve
7
4.2.2 Gear positions
9
4.3 Installation position
10
4.4 Assembly instructions and fittings
11
5 Set-up and operation of the valve
11
5.1 Visual inspection and preparation
11
5.2 Function check and pressure test
11
5.3 Putting electric actuators into operation
11
6 Actuators
11
6.1 General
11
6.2 Operating torques
12
6.3 Emergency manual operation (handwheel)
12
6.4 Assembly of the electric actuator
12
6.5 Valves with VAG HYsec hydraulic brake-and-lift
units
13
7 Maintenance and repair
13
7.1 General safety instructions
13
7.2 Inspection and operation intervals
14
7.3 Maintenance work and replacement of parts
14
7.3.1 Design
14
7.3.2 Recommendations for the replacement
of parts
14
7.3.3 Cleaning and lubrication
14
7.3.4 Replacement of the profile seal
14
7.3.5 Replacement of the O-rings in the
bearing
14
7.3.6 Tightening torques for screws
15
8 Trouble-shooting
16
9 How to contact us
16
