Valve Setting
Procedure
Steps 1 through 10 are to be per-
formed when initially setting the Mod-
el DV-5 Deluge Valve; after an op-
erational test of the fire protection
system; or, after system operation due
to a fire. Refer to Figure 4, 5, or 6, as
applicable.
Step 1. Close the Stop Valve (B).
Step 2. Close the Diaphragm Sup-
ply Valve (P). For Dry Pilot Actuation,
close the Dry Pilot Air Supply Valve
(T).
Step 3. Open the Alarm Test Valve
(G), System Drain Valve (E), and all
auxiliary drains in the system. Close
the auxiliary drain valves after water
ceases to discharge. Leave the Alarm
Test Valve (G) and System Drain Valve
(E) open.
At this time make certain that the
Pressure Gauge Valves and the Alarm
Control Valve (H) are open.
Step 4. Depress the plunger of the
Automatic Drain Valve (F) to verify that
it is open and that the DV-5 Valve is
completely drained.
Step 5. Clean the Diaphragm Supply
Strainer (Q) by removing the clean-
out plug and strainer basket. The Di-
aphragm Supply Strainer (Q) may be
flushed out by momentarily opening
the Diaphragm Supply Valve (P).
Step 6. Reset the actuation system.
Manual Actuation — Push the operat-
ing lever up; however, do not close the
hinged cover at this time.
Wet Pilot Actuation — Replace oper-
ated pilot sprinklers and/or reset the
remote manual control stations.
Dry Pilot Actuation — Replace oper-
ated pilot sprinklers and/or reset the
remote manual control stations. Rees-
tablish dry pilot pneumatic pressure.
Electric Actuation — Reset the elec-
tric detection system in accordance
with the manufacturer’s instructions to
de-energize the solenoid valve.
NOTE
In order to prevent the possibility of
a subsequent operation of an over-
heated solder type pilot sprinkler, any
solder type pilot sprinklers that were
possibly exposed to a temperature
greater than their maximum rated am-
bient must be replaced.
Step 7. Open the Diaphragm Supply
Valve (P) and allow time for full pres-
sure to build up in the DV-5 Diaphragm
Chamber.
Step 8. Operate (open) the Manual
Control Station (M) to vent trapped air
from the DV-5 Diaphragm Chamber. If
necessary, first open the hinged cover,
and then fully pull down on the operat-
ing lever. SLOWLY close the operat-
ing lever, by pushing it up, after aer-
ated water ceases to discharge from
the Manual Control Station. Close the
hinged cover and insert a new break
rod in the small hole through the top
of the enclosing box.
For Wet Pilot Actuation, crack open
the Inspector’s Test Connection and
any other vent valves on the wet pi-
lot line to relieve trapped air. After the
discharge of air has stopped, close
the vent valves and the Inspector’s
Test Connection.
Step 9. Verify the ability for the DV-
5 Diaphragm to hold pressure as
follows:
With the diaphragm chamber pressur-
ized per Step 8, temporarily close the
Diaphragm Supply Valve (P), and then
observe the Diaphragm Gauge (K) for
a drop in pressure.
If a drop in pressure is noted, the DV-
5 Diaphragm is to be replaced and/or
any leaks must be corrected before
proceeding to the next step.
If the Diaphragm Chamber Pressure
Gauge (K) indicates no drop in pres-
sure, re-open the Diaphragm Sup-
ply Valve (P) and proceed to the next
step.
Step 10. Partially open the Stop Valve
(B). Close the Alarm Test Valve (G) as
soon as water discharges from the
System Drain Valve (E) and then close
the System Drain Valve (E) after wa-
ter ceases to drain. Observe the Au-
tomatic Drain Valve (F) for leaks. If
there are leaks, determine/correct the
cause of the leakage problem. If there
are no leaks, the DV-5 Valve is ready
to be placed in service and the Stop
Valve must then be fully opened.
NOTES
If the Alarm Test Valve is not closed
as soon as water discharges from the
System Drain Valve, a false alarm may
occur.
When the Stop Valve (B) is opened,
the pressure on the DV-5 Diaphragm
Chamber may increase. This increase
in pressure is normal, and if the pres-
sure is greater than 16 bar, the pres-
sure is to be relieved by partially and
temporarily opening the Manual Con-
trol Station (M); however, do not allow
the pressure as indicated on the Dia-
phragm Gauge (K) to drop below the
supply pressure shown on the Water
Supply Gauge (J), since this action may
result in tripping of the DV-5 Valve.
After setting a fire protection system,
notify the proper authorities and ad-
vise those responsible for monitor-
ing proprietary and/or central station
alarms.
TFP1338 Page 23 of 28
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