Contents
EB 8139 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 ............................................................................................10
3.2
Technical data .............................................................................................12
3.3
Dimensions and weights ...............................................................................13
3.4
Permissible differential pressures ...................................................................14
3.4.1
Version FA/NC with fail-safe position: fail-close .............................................14
3.4.2
Version FE/NO with fail-safe position: fail-open .............................................14
4
Measures for preparation ............................................................................16
4.1 Unpacking ..................................................................................................16
4.2
Transporting and lifting ................................................................................16
4.3 Storage .......................................................................................................16
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 fittings
.........................................................................................19
5.4
Quick check ................................................................................................20
6 Operation ...................................................................................................21
7 Servicing.....................................................................................................22
7.1
Replacing the gaskets ...................................................................................23
7.2
Replacing the packing ..................................................................................24
7.3
Tightening torques ........................................................................................27
7.4
Preparation for return shipment .....................................................................28
