Viking Pump TSM280: Duralobe (Discontinued) User Manual
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If the pump on which the valve is installed is to be installed in either a
pressurized system or one incorporating a vessel under vacuum, the
application of the valve should be referred to Viking Pump or their authorized
distributor.
The selection, setting and application of integral relief valves is influenced by
the viscosity and nature of the pumped media, the pump operating speed and
the required pressure relief setting and mode of operation. For these reasons,
and to cover the diverse range of products, the conditions under which they
are pumped, and application demands, it is not practical to factory set integral
relief valves. The setting of the valve should be carried out on site under the
proposed duty conditions for which the pump and valve were selected.
For setting and operating Duralobe
®
integral relief valves refer to sections
3.8.1 and 3.8.2. Before beginning the relief valve setting procedure the pump
should be installed, refer to section 3.3.1, with a pressure gauge in the
discharge line adjacent to the pump discharge port.
3.8.1 Setting and Operating Spring Loaded Valves
see Figs 11, 12 and 13.
-
Remove cover (108). For integral relief valve with manual lift, see Fig
12, first remove nut (129) and handwheel (111).
-
Loosen nut (107) using a pry bar in the holes provided, to relieve spring
compression. For integral relief valve with air lift, see Fig 13, the air
cylinder must be exhausted prior to unscrewing the nut (107).
-
Start pump, refer to section 3.4.
-
Screw in nut (107) using pry bar in holes provided until required
pressure relief setting is reached.
Note: Care should be taken not to exceed the lower of either the pumps
maximum pressure rating or the system design pressure.
-
Reinstall cover (108). For integral relief valve with manual lift, see Fig 12,
reinstall handwheel (111) and nut (129).
WARNING
WARNING