Contents
EB 8140 EN 3
1 Safety instructions and measures ...................................................................5
1.1 Notes on possible severe personal injury .........................................................7
1.2 Notes on possible personal injury ...................................................................7
1.3 Notes on possible property damage ................................................................8
2 Markings on the control valve ........................................................................9
2.1 Valve nameplate ............................................................................................9
3 Design and principle of operation ................................................................10
3.1 Fail-safe action ............................................................................................11
3.2 Technical data .................................................................................................
3.3 Dimensions and weights ...............................................................................12
3.4 Permissible differential pressures ...................................................................13
3.4.1 Version FA/NC with fail-safe position: fail-close .............................................13
3.4.2 Version FE/NO with fail-safe position: fail-open .............................................14
3.5 Accessories .................................................................................................16
4 Measures for preparation ............................................................................16
4.1 Unpacking ..................................................................................................16
4.2 Transporting and lifting ................................................................................16
4.3 Storage .......................................................................................................17
4.4 Preparation for installation ............................................................................17
5 Mounting and start-up ................................................................................. 18
5.1 Installing the valve into the pipeline ...............................................................18
5.1.1 Mounting position ........................................................................................18
5.1.2 Installing the valve ........................................................................................18
5.2 Connecting the signal pressure ......................................................................18
5.3 Additional ttings .........................................................................................19
5.4 Quick check ................................................................................................20
6 Operation ...................................................................................................21
7 Servicing.....................................................................................................22
7.1 Replacing the gaskets ...................................................................................23
7.2 Replacing the packing ..................................................................................24
7.2.1 DN15 to 50 ...............................................................................................24
7.2.2 DN65 and 80.............................................................................................28