
Contents
EB 8139 EN
1 Safety instructions and measures ................................................................1-1
1.1 Notes on possible severe personal injury ......................................................1-3
1.2 Notes on possible personal injury ................................................................1-4
1.3 Notes on possible property damage.............................................................1-5
2 Markings on the device ..............................................................................2-1
2.1 Valve nameplate .........................................................................................2-1
3 Design and principle of operation ...............................................................3-1
3.1 Fail-safe position.........................................................................................3-1
3.2 Additionalttings........................................................................................3-1
3.3 Technical data ............................................................................................3-3
3.3.1 Dimensions and weights ..............................................................................3-4
3.3.2 Permissible differential pressures ..................................................................3-5
4 Shipment and on-site transport ...................................................................4-1
4.1 Accepting the delivered goods .....................................................................4-1
4.2 Removing the packaging from the valve........................................................4-1
4.3 Transporting and lifting the valve..................................................................4-1
4.4 Storing the valve.........................................................................................4-1
5 Installation.................................................................................................5-1
5.1 Installation conditions..................................................................................5-1
5.2 Preparation for installation...........................................................................5-1
5.3 Installing the valve into the pipeline ..............................................................5-2
5.4 Connecting the signal pressure.....................................................................5-2
5.5 Testing the installed valve.............................................................................5-3
5.5.1 Leak test.....................................................................................................5-4
5.5.2 Fail-safe action ...........................................................................................5-4
5.5.3 Pressure test................................................................................................5-4
6 Start-up .....................................................................................................6-1
7 Operation..................................................................................................7-1
8 Malfunctions ..............................................................................................8-1
8.1 Troubleshooting ..........................................................................................8-1
8.2 Emergency action .......................................................................................8-2
9 Servicing....................................................................................................9-1
9.1 Periodic testing ...........................................................................................9-2
9.2 Preparing the valve for service work.............................................................9-2
9.3 Replacing the gaskets ..................................................................................9-2
9.4 Replacing the packing.................................................................................9-4