Installation
NOTES
Proper operation of the Model DV-5
Deluge Valves depends upon their
trim being installed in accordance with
the instructions given in this Techni-
cal Data Sheet. Failure to follow the
appropriate trim diagram may prevent
the DV-5 Valve from functioning prop-
erly, as well as void approvals and the
manufacturer’s warranties.
The DV-5 Valve must be installed in a
readily visible and accessible location.
The DV-5 Valve, associated trim, and
wet pilot lines must be maintained at a
minimum temperature of 4°C.
Heat tracing of the DV-5 Valve or its
associated trim is not permitted. Heat
tracing can result in the formation of
hardened mineral deposits that are ca-
pable of preventing proper operation.
The Model DV-5 Deluge Valve is to be
installed in accordance with the fol-
lowing criteria:
Step 1. All nipples, fittings, and de-
vices must be clean and free of scale
and burrs before installation. Use pipe
thread sealant sparingly on male pipe
threads only.
Step 2. The DV-5 Valve must be
trimmed in accordance with one of the
trim illustrations shown in Figures 7
thru 18, as applicable.
Step 3. Care must be taken to ensure
that check valves, strainers, globe
valves, etc. are installed with the flow
arrows in the proper direction.
Step 4. Suitable provision must be
made for disposal of drain water.
Drainage water must be directed such
that it will not cause accidental dam-
age to property or danger to persons.
Step 5. Connect the Diaphragm Sup-
ply Valve to the inlet side of the sys-
tem’s Stop Valve in order to facilitate
setting of the DV-5 Valve (Ref. Figure
19).
Step 6. An Inspector’s Test Connec-
tion, as described in the Wet Pilot Actu-
ation and Dry Pilot Actuation sections
(Pages 6 and 7), must be provided for
Wet or Dry Pilot Actuation systems.
Step 7. An Air Maintenance Device,
as described in the Dry Pilot Actuation
section (Page 7), must be provided for
Dry Pilot Actuation.
Step 8. A desiccant dryer, when spec-
ified for Dry Pilot Actuation, is to be in-
stalled between a drip leg and the Air
Maintenance Device.
Step 9. The Low Pressure Alarm
Switch for Dry Pilot Actuation is to be
adjusted as follows:
• Low pressure alarm setting at approx-
imately 0,4 bar below the minimum
pilot line service pressure requirement
shown in Graph B (Page 9).
• Fire alarm setting at approximately
1,0 bar below the minimum pilot line
service pressure requirement shown
in Graph B (Page 9).
Step 10. The Pressure Relief Valve pro-
vided with the Dry Pilot Actuation Trim
is factory set to relieve at a pressure of
approximately 3,1 bar, which can typi-
cally be used for a maximum dry pilot
actuation system pressure of 2,8 bar.
The Pressure Relief Valve may be re-
set; however, it must be reset to relieve
at a pressure which is in accordance
with the requirements of the authority
having jurisdiction.
To reset the Pressure Relief Valve,
first loosen the jam nut and then ad-
just the cap accordingly — clockwise
for a higher pressure setting or coun-
ter clockwise for a lower pressure set-
ting. After verifying the desired pres-
sure setting, tighten the jam nut.
Step 11. Conduit and electrical con-
nections are to be made in accor-
dance with the applicable standards of
the Approval agency.
Step 12. Before a system hydrostatic
test is performed, the DV-5 Diaphragm
Chamber is to be depressurized, the
Automatic Drain Valve is to be tem-
porarily replaced with a plug, and the
Diaphragm Cover Bolts must be uni-
formly and securely tightened using
a cross-draw sequence. After tight-
ening, double-check to make certain
that all of the Diaphragm Cover Bolts
are securely tightened.
Page 10 of 28 TFP1338
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