TFP1484
Page 2 of 16
kler or broken piping will not cause the
DV-5 Valve to open since the air pres-
sure is for supervisory alarm only.
Detection System
Operation of an electrical detection
device such as a heat-sensitive ther-
mostat or smoke detector signals the
deluge valve releasing panel to ener-
gize the Solenoid Valve. In turn, the
energized Solenoid Valve opens to
release water from the Diaphragm
Chamber faster than it can be replen-
ished through the restriction provided
in the diaphragm supply connec-
tion. This release of water results in a
rapid pressure drop in the Diaphragm
Chamber to below the valve trip point.
The water supply pressure then forces
the Diaphragm open, permitting water
to flow into the system piping, as well
as through the Alarm Port to actuate
the system alarms.
In the event of a fault in the fire detec-
tion system, the installation shall
operate as an ordinary dry pipe system,
which means the energized-to-close
Solenoid Valve in the actuation loop
will open. As soon as a sprinkler oper-
ates/activates, the subsequent drop in
air pressure opens the Dry Pilot Actua-
tor. Water from the diaphragm pressure
piping will exit the Dry Pilot Actuator
through this drain, resulting in the acti-
vation of the DV-5 Deluge Valve.
Fail-Safe Valve
As water flows into the system, pres-
surization of the pilot chamber opens
the Model FSV-1 Fail-Safe Valve. With
the Model FSV-1 Valve open, make-up
pressure to the diaphragm chamber of
the DV-5 Valve cannot occur, thereby
preventing inadvertent closing of the
DV-5 Valve during a fire, as may be
the case should the Solenoid Valve
become de-energized after its initial
operation. Refer to Technical Data
Sheet TFP1386 for more Model FSV-1
Fail Safe Valve details.
Dry Pilot Actuator
In the case of dry pilot actuation, air
pressure is released from the system
piping due to the opening of an auto-
matic sprinkler. When actuated by this
event, the Model DP-1 Dry Pilot permits
the release of water pressure from the
deluge valve differential chamber,
thereby allowing the DV-5 Deluge Valve
to open. Refer to Technical Data Sheet
TFP1380 for more Model DP-1 Dry Pilot
Actuator details.
NOTICE
The DV-5 Preaction Type A Valves
described herein must be installed
and maintained in compliance with
this document, as well as with the
EN12825 installation standard of pre-
action systems, in addition to the stan-
dards of any other authorities having
jurisdiction. Failure to do so may impair
the performance of the related devices.
Owners are responsible for maintaining
their fire protection system and devices
in proper operating condition. Contact
the installing contractor or product
manufacturer with any questions.
Technical
Data
Approvals
Sizes DN100 and DN150 are VdS
Approved and have been designed in
accordance with EN12845.
For more information on approvals,
contact Johnson Controls at the fol-
lowing office:
Kopersteden 1
7547 TJ Enschede
The Netherlands
Tel: +31-(0)53-428-4444
Fax: +31-(0)53-428-3377
Nominal Sizes
DN40 thru DN200
Deluge Valve
DV-5
Riser Check Valve
Model CV-1FR
DN40 risers utilize a DN50 Riser Check
valve in combination with the DN40
DV-5 Deluge Valve.
Valve Trim
The trim arrangement is provided with
galvanized fittings. The galvanized trim
is intended for non-corrosive or corro-
sive conditions.
Maximum Service Pressure
16 bar
Detection System
In order for DV-5 Preaction Type A
Valves to be hydraulically calculated
as a wet pipe system, the detection
system must be designed to operate
sooner than the automatic sprinklers on
the sprinkler piping.
DV-5 Preaction Type A Valve provides
for electric operation of the DV-5 Valve
by a detection system consisting of
electrical devices such as heat sen-
sitive thermostats, smoke detectors,
and/or manual pull stations. Nominal
installation dimensions for the Pre-
action Type A Trim configuration are
shown in Figure 4.
NOTICE
Consult with the authority having juris-
diction regarding installation criteria
pertaining to electric actuation circuitry.
System Air Pressure
Requirements
The DV-5 Preaction Type A Valve
includes a Model DP-1 Dry Pilot Actu-
ator, an auxiliary releasing device. The
Model DP-1 Valve actuates control
valves upon release of air (or nitrogen)
pressure (Ref. TFP1380).
The air (or nitrogen) pressure in the
sprinkler system is recommended to
be automatically maintained using one
of the following pressure maintenance
devices, as appropriate:
• an air supply in combination with
Model AMD-1 Air Maintenance
Device (pressure-reducing type)
described in TFP1221
• an air supply in combination with
Model AMD-2 Air Maintenance
Device (compressor-control type)
described in TFP1231
• a nitrogen cylinder in combination
with Model AMD-3 Nitrogen Mainte-
nance Device (high pressure-reduc-
ing type) described in TFP1241
• the minimum system supply pressure
is 3,0 bar
NOTICE
The dew point of the air or nitrogen
supply for a system exposed to freez-
ing conditions must be maintained
below the lowest ambient tempera-
ture to which the system piping will be
exposed. Introduction of moisture into
the system piping can create ice build-
up which could prevent proper opera-
tion of the system.
The Supervisory Low/High Pressure
Alarm Switch (Ref. Figures 3, 5 and 6)
is factory set for 2,8 bar normal system
pressure. The low pressure alarm is set
to operate at a pressure decrease of
0,7 bar at 2,1 bar.
The high pressure alarm is set to
operate at a pressure increase of 0,7
bar at 3,5 bar. The Pressure Relief Valve
(Ref. Figure 3) is factory set to fully
open at 3,1 bar plus or minus 0,14 bar.
Friction Loss
The nominal pressure loss versus
flow data for the DV-5 Deluge Valve
plus Riser Check Valve is provided in
Graph A.
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