Tyco DV-5 Manual page 5

C
2
H
G
Wet Pilot
Actuation
The Wet Pilot Actuation Trim forms a
part of the laboratory approval of the
DV-5 Valves and is necessary for their
proper operation.
The Wet Pilot Actuation Trim provides
for connection of a detection system
consisting of wet pilot line sprinklers
(heat detectors) and manual control
stations interconnected with minimum
DN15 steel pipe. The pilot line is con-
nected to the Wet Pilot Line Connection
shown in Figure 4.
L
E
D
A
F
J
B
1
WET PILOT ACTUATION
(Refer to Figures 7 thru 10 for specific Bills of Material)
Installation dimensions are provided in
Figure 19.
Pilot sprinklers are to be minimum 80
K-factor orifice approved automatic
sprinklers. Manual Control Stations
are to be the Model MC-1 described in
Technical Data Sheet TFP1382.
The maximum height of a wet pilot line
above the DV-5 Valve must not exceed
the limitations shown in Table B as a
function of the minimum water supply
pressure to the DV-5 Valve for an equiv-
alent length (pipe plus fittings) of the
pilot line up to 150 meters to the most
remote pilot sprinkler.
K
3
M
N
Q
P
FIGURE 4
Page 5 of 26
Item Description
A DV-5 Valve
B Stop Valve
C Water ow Switch
D Main Drain Valve
E System Drain Valve
F Automatic Drain Valve
G Alarm Test Valve
H Alarm Control Valve
J Water Supply Gauge
K Diaphragm Gauge
L System Gauge
M Manual Control Station
N Automatic Shut-Off Valve
P Diaphragm Supply Valve
Q Diaphragm Supply Strainer
1 Diaphragm Supply Connection
2 Water Motor Alarm Connection
3 Wet Pilot Line Connection
Provision must be made for install-
ing a 80 K-factor orifice, Inspector's
Test Connection at the most hydrauli-
cally demanding location of a wet pilot
line (usually adjacent to the highest
and most remote wet pilot sprinkler or
manual control station).
NOTES: Wet Pilot Lines must be main-
tained at a minimum temperature of
4°C.
At a minimum, it is recommended that
internally galvanized pipe and cast iron
fittings be used for wet pilot lines.
TFP1335