2
4 GV 74 en
READ THESE INSTRUCTIONS FIRST!
These instructions provide information about safe handling and operation of the valve.
If you require additional assistance, please contact the manufacturer or manufacturer's representative.
Addresses and phone numbers are printed on the back cover.
See also www.metso.com/valves for the latest documentation.
SAVE THESE INSTRUCTIONS!
Subject to change without notice.
All trademarks are property of their respective owners.
Table of Contents
1
GENERAL...............................................................3
1.1
Scope of the manual ............................................3
1.2
Valve construction ................................................3
1.3
Valve markings .......................................................3
1.4
Technical specifications ......................................4
1.5
Valve seat leakage class ......................................4
1.6
Recycling and disposal ........................................4
1.7
Safety precautions ..............................................4
2
TRANSPORTATION, RECEPTION AND
STORAGE...............................................................4
3
VALVE INSTALLATION .........................................5
3.1
General ......................................................................5
3.2
Installation into the pipeline .............................5
3.3
Control valve assembly .......................................5
3.4
Valve insulation......................................................5
4
MAINTENANCE ....................................................5
4.1
General ......................................................................5
4.2
Gland packing adjustment.................................6
4.3
Replacing the gland packing ..........................6
4.4
Replacing the trim and body reassembly ....6
5
TESTING THE VALVE ............................................7
6
REMOVAL & MOUNTING THE ACTUATOR ..........8
7
TOOLS ...................................................................9
8
ORDERING SPARE PARTS ....................................9
9
EXPLODED VIEW AND PARTS LIST ...................10
10
DIMENSIONS AND WEIGHTS .............................11
10.1
Valve GW................................................................ 11
10.2
Actuators VD, VC................................................. 12
11
TYPE CODE .........................................................16
