Tyco DV-5 Manual

DV-5 Deluge Valve, Diaphragm Style,
1-1/2 thru 8 Inch (DN40 thru DN200),
Deluge System — Electric Actuation
General
Description
The DV-5 Deluge Valve (described in
Technical Data Sheet TFP1305) is a
diaphragm style valve that depends
upon water pressure in the Diaphragm
Chamber to hold the Diaphragm closed
against the water supply pressure.
When the DV-5 Valve is set for service,
the Diaphragm Chamber is pressurized
through the trim connections from the
inlet side of the system's main con-
trol valve, for example an O.S.&Y. gate
valve or butterfly valve (Ref. Figures 1
and 4).
Operation of an electrical device such
as a heat sensitive thermostat, smoke
detector, or electrical manual control
station signals the Deluge Valve Re-
leasing Panel to energize the Solenoid
Valve. In turn, the energized Solenoid
Valve opens to release water from the
Diaphragm Chamber faster than it can
be replenished through the 1/8 inch
(3,2 mm) restriction provided by the
Model ASV-1 Automatic Shut-Off Valve
in the diaphragm supply connections
(Item 5 - Fig. 3A and 5, also described
in Technical Data Sheet TFP1384). This
results in a rapid pressure drop in the
Diaphragm Chamber and the force
differential applied through the Dia-
phragm that holds it in the set position
is reduced 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.
As water flows into the system, the pi-
lot chamber of the Model ASV-1 Auto-
matic Shut-Off Valve (Item 5 - Fig. 3A
and 5) becomes pressurized and the
ASV-1 automatically shuts off the di-
aphragm chamber supply flow to the
DV-5 Diaphragm Chamber. Shutting
off the diaphragm chamber supply flow
prevents the DV-5 Diaphragm Chamber
from becoming re-pressurized, there-
by preventing inadvertent closing of the
DV-5 during a fire (as may be the case
should the Solenoid Valve become de-
energized after its initial operation).
Page 1 of 14
NOTICE
The DV-5 Deluge Valve with Electric
Actuation Trim described herein must
be installed and maintained in compli-
ance with this document, as well as
with the applicable standards of the
National Fire Protection Association, in
addition to the standards of any other
authorities having jurisdiction. Failure
to do so may impair the performance
of these devices.
The owner is responsible for main-
taining their fire protection system
and devices in proper operating con-
dition. Contact the installing contrac-
tor or product manufacturer with any
questions.
OCTOBER 2014
Worldwide
www.tyco-fire.com
Contacts
TFP1320