Technical
Data
Approvals:
UL and C-UL Listed (wet pilot, dry pilot,
or electric actuation).
FM Approved (wet pilot, dry pilot, or
electric actuation).
LPCB Approved (wet pilot or dry pilot
actuation).
Deluge Valve:
The 2-1/2 inch (DN65), Model DV-3
Deluge Valves are for vertical installa-
tions as shown in Figure 1, and they
are rated for use at a maximum service
pressure of 175 psi (12,1 bar). Valve
dimensions are shown in Figure 1, and
the nominal installation dimensions
are shown in Figures 4, 7, and 10.
Components for the DV-3 Valve are
shown in Figure 1. The Body and
Cover are ductile iron. The Diaphragm
and Facing areEPDM.The Diaphragm
Ring and Center Valve are are bronze,
and the Seat Ring is brass. The Facing
retainer is brass. The Cap Screws and
Facing Retainer Screw are stainless
steel.
Valve Trim
The Wet Pilot Actuation Trim, Dry Pilot
Actuation Trim, and Electric Actuation
Trim form a part of the laboratory list-
ings and approval of the DV-3 Valves
and are necessary for their proper op-
eration. Each package of trim includes
the following items:
• Water Supply Pressure Gauge
• Diaphragm Chamber
Pressure Gauge
• Diaphragm Chamber Connections
• Actuation Devices (as applicable)
• Main Drain Valve
• Alarm Test Valve
• Automatic Drain Valve
• Dry Pilot Line Pressure Gauge
(as applicable)
To ease field assembly of the trim ar-
rangements, the appropriate compo-
nents required for Wet Pilot Actuation,
Dry Pilot Actuation, or Electric Actua-
tion are provided partially assembled
as shown in Figure 12.
Page 3 of 20
TFP1350
GRAPH A
2-1/2 INCH (DN65) MODEL DV-3 DELUGE VALVE
— NOMINAL PRESSURE LOSS VERSUS FLOW —
The approximate friction loss, based on the Hazen and Williams formula and expressed
in equivalent length of Schedule 40 pipe with C=120, is 10 feet. The equivalent length of
pipe has been calculated on a typical flow rate of 250 GPM.
100 300200 500400 500 1000700 2000
FLOW RATE IN GALLONS PER MINUTE
GPM
FLOW RATE IN LITRES PER MINUTE
LPM
400
NOMINALPRESSURE DROP IN BAR
0,40
0,10
0,08
0,07
0,09
0,20
0,30
0,50
0,60
0,70
1
2
3
4
5
9
7
6
8
10
NOMINAL PRESSURE DROP
IN POUNDS PER SQUARE INCH (PSI)
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