Deluge Valve, Pressure Control
Series 700D/DX - 03/13CR01
Electric Actuation, Remote Resetting
Model 733DX-03CR01
General Description
The Inbal Pressure Control, Remote
Resetting, Electrically Actuated Deluge
Valve is specifically designed for use in
fire protection systems which require
pressure control, actuated by a remote
resetting electric detection and release
system. The Inbal Pressure Control,
Electrically Actuated Deluge Valve,
when in operation, automatically
reduces a higher inlet pressure to a preset
delivery pressure which remains steady
and unaffected by the variations or
fluctuations in the inlet line pressure.
The Inbal Pressure Control, Electrically
Actuated Deluge Valve is used for
automatic or manual operation. Electric
activation of the Inbal Deluge System
requires a solenoid valve controlled by a
control (fire alarm & releasing) panel
Mil Ltd.
either manually or by heat, smoke, or
flame detectors. When the detection
system operates, the control panel
activates the Solenoid Valve to open.
When the Solenoid Valve is actuated
either automatically or manually or
when a manual release station is operated
locally or remotely, the Inbal Deluge
Valve opens and water flows from all
open sprinklers and/or nozzles on the
While the valve operates, the deluge
system pressure is maintained at the
preset level within a narrow range. If the
downstream pressure changes slightly,
the pilot control responds immediately to
modulate the Inbal Valve for the preset
The use of the Inbal Pressure Control
Deluge Valve balances the distribution of
the water capacity available, throughout
the system and prevents a higher demand
from the areas which are of lower
altitude or are located closer to the
pressure source. Thus, the total system
demand is balanced and the excess flow
through the system with high pressure
water supplies is reduced to the desired
level. The adjustment of the valve's
delivery pressure can be easily modified
at the site.
After operation, the Inbal Valve can be
reset by remote control, saving the need
to approach the Deluge Valve for
resetting. The trim includes all the pilot
valves, accessories, and fittings to
provide for proper operation, either at
vertical or horizontal installation.
Standard material Inbal Deluge Valve is
rated to 300 psi (21 bar) working
pressure. The Solenoid Valve rating
should be at least as the maximum
designed delivery pressure. Inbal
Pressure Control Deluge Valves are
available in sizes 1½" (40 mm) to 12"
(300 mm) with threaded, flanged,
grooved, or wafer ends.
The only moving part in the Inbal Valve,
when it operates, is the reinforced sleeve
which forms a drip tight seal with the
corrosion resistant core. It has a smooth
opening to prevent any water hammer in
the piping system.
The unique design of the Inbal Valve and
the pilot control and variety of materials
and coatings make the Inbal Pressure
Control Deluge Valve suitable for use
with brackish or sea water similar to
those found in chemical and
petrochemical facilities or in offshore
Technical Data
The basic Inbal Deluge Valve is FM
Approved to 300 psi (21 bar) in sizes 3",
4", 6", and 8" (80, 100, 150, and
200 mm). Inbal Valves are Lloyd's,
DNV, and ABS Type Approved in sizes
1½" (40 mm) to 12" (300 mm) to a
working pressure of 300 psi (21 bar).
Model Numbers
Inlet End Outlet End
Threaded Threaded
Threaded Grooved
Flanged Flanged
Flanged Grooved
Solenoid Valve
Available in:
Energized to open, energized to close,
and magnetic latch (impulse)types.
Standard voltages:
AC 50Hz: 24, 48, 110, 220, & 380 volt ;
AC 60Hz: 24, 120, & 240 volt ;
DC: 12, 24, 48, 110, 120, & 220 volt.
"DX" can be replaced with "D" depends on the Other voltages are available on request.
Inbal Automatic Water Control Valve series in use.
Protection type Enclosure:
See bulletins F02-01-01 and F02-03-01.
The above model numbers refer to fully trimmed Conforms to NEMA (1 to 9), IEC ( 79 &
valves. For basic trim replace "03" with "13". 529), or CENELEC (50014 to 50019)
(See also bulletin F01-03-01 for control trim "23" standards.
& "33"). For example: 711D-13CR01 is a threaded See bulletins F30-10-01, F30-11-01, and
ends deluge valve with basic, electrically actuated,
pressure control trim.
Model No.
Threaded and Grooved Ends:
1½", 2", 2½", &, 3" (40, 50, 65, & 80 mm).
Flanged and Grooved Ends:
2", 2½", 3", 4", 6", 8", 10", & 12" (50, 65,
80, 100, 150, 200, 250, & 300 mm).
Wafer End:
3", 4", 6", 8", 10", & 12" (80, 100, 150,
200, 250, & 300 mm).
End Standards
Threaded End:
Flanged End:
ANSI B16.5 class 150 & 300 ;
ISO 7005 - PN10, 16 & 25 ;
BS 10 Table D & E ;
AS 2129 Table D & E ;
Jis B2212, 2213, & 2214.
Wafer End:
Fits most of the above standards.
Pressure Rating
Maximum working pressure*: 300 psi
(21 bar). However, the pressure rating of
the specific solenoid valve in use, should
not be lower than the maximum
Adjustment Range.
* Standard material valve.
Adjustment Range
30 to 300 psi (2 to 21 bar).
Valve Housing:
Carbon Steel (SAE 1021).
Valve Ends and Wafer Drain Ends:
Ductile Iron (ASTM A536-65 45 12).
Threaded, Flanged, and Grooved Drain
Carbon Steel SAE 1020.
SMR5 Elastomer reinforced with Polyester and Kevlar.
Control Trim:
Brass Nickel Chrome plated, Stainless
Steel, and Galvanized Steel.
Cast Steel ;
Bronze ;
Nickel Aluminum Bronze ;
Stainless Steel AISI 316 ;
Super Austenitic Stainless Steel ;
Super Duplex Stainless Steel ;
Powder epoxy coated. Thickness: 0.004"
(0.1 mm) external and internal surfaces.
High built epoxy coated and polyurethane finish. Thickness: 0.01" (0.3 mm).
Halar ® coated. Thickness: 0.02"
(0.5 mm) .
Halar ® is a registered trade mark of Ausimont USA Inc.
* Marked red.
Control Trim
Temperature Range
Water: Max.+150°F (+65°C).
Installation Position
Vertical or horizontal.
The control trim includes Solenoid
Valve, Pressure Reducing Pilot Valve,
Emergency Release Valve, Pressure
Gauges, Pressure Gauge Valves, fittings,
and tubing. On standard the control trim
is supplied preassembled in sections.
See the applicable Trim Chart for
complete components list.
Dual function control trim on a single
valve body saves the use of two
different control valves.
! Remote electrical operation and reset
enable efficient control on the whole
! No Moving Mech a nical Parts
(N.M.M.P.) construction ensures a long
life of dependable operation and
provides stable delivery pressure and a
gradual closure, in case of increasing
delivery pressure, to eliminate surges.
! Quick, yet soft opening performance eliminates water hammer and consequent damages.
! Fast and easy reset - no need to
approach the valve.
! Supplied as standard preassembled in
sections - saves the self assembly cost.
! Can be installed vertically or
! Compact design - minimum space for
valve and trim.
! Unique principle of operation prevents
false operation due to water surges.
! Pressure rating of 300 psi (21 bar) for
standard material valve, provided a
compatible solenoid valve is used.
! Balanced single seat design pilot
control for very accurate performancenot affected, even slightly, by inlet
pressure fluctuations.
! Long spring design pilot control for
sensitive setting and maintaining
precise delivery pressure.
! Easily adjusted to the desired system
! Hydrodynamically designed Inbal
Valve with streamline flow pathprovides increased flow capacity.
! Wide selection of solenoid valves to
meet various requirements for type of
o per a t i o n, vo l t a g e , f req u en c y ,
protection, and enclosure.
! Wide range of sizes for an ideal system
! Control trim made of high grade
materials as standard.
! Epoxy coating supplied as standardensures excellent corrosion resistence.
! Variety of available materials to ensure
corrosion free service even under
severe conditions.
Schematic Control Diagram _ 700DX-03CR01
The Control Chamber of the Inbal
Automatic Water Control Valve is the
annular space between the Valve
Housing and the Sleeve. The valve is
held in a closed position as long as the
inlet pressure is maintained in the
Control Chamber.
The electric actuation trim consists of a
Solenoid Valve connected to the wet
pilot line and is controlled by the
detection system and the control (Fire
Alarm & Releasing) panel. A manual
emergency electric station and an alarm
bell are incorporated electrically into the
Fire Alarm & Releasing Panel and
detector circuits. For "energized to open"
Solenoid Valve, the Fire Alarm &
Releasing Panel should include a battery
charging circuit. In the event of power
failure the Fire Alarm & Releasing Panel
automatically switches to battery power.
In the set position, water pressure is
applied to the Inbal Valve Control
Chamber and to the Solenoid Valve from
the upstream of the Water Supply Valve.
The de-energized ("energized to open"
type) or energized ("energized to close"
type) Solenoid Valve is closed.
Consequently, the Inbal Deluge Valve
stays closed.
The Inbal Deluge Valve opens when the
Solenoid Valve is actuated either by the
detectors through the Fire Alarm &
Releasing Panel or manually (energized
or de-energized depending on the type of
solenoid valve). The Inbal Valve opens
also when the Emergency Release Valve
Either one of these operations releases
water from the Inbal Valve Control
Chamber. The flow through the Pressure
Reducing Pilot Valve responds to
changes in the downstream pressure
while controlling the pressure in the
Inbal Valve Control Chamber. When the
delivery pressure decreases, the pilot
valve and the Inbal Valve open wider to
increase the pressure. When the delivery
pressure increases, the pilot valve and
the Inbal Valve close to throttle further
the flow and consequently the delivery
pressure is decreased. Thus, the outlet
pressure is maintained within a close
limit. The operation of the Inbal Deluge
Valve will flow water from any open
sprinklers and/or spray nozzles on the
system while activating the system's
alarm devices.
The valve remains open until the Resetting procedure is followed. Actually,
To System
Fire Alarm
& Releasing
To Water
To Alarm Alarm
To Drain
1 Inbal Automatic
Water Control Valve
2 Emergency Release Station
3 Automatic Drain Valve
4 Trim Shutoff Valve
5 Y-Strainer
6 Check Valve
7a Supply Pressure Gauge
7b System Pressure Gauge
9 Pressure Reducing
Pilot Valve
the Inbal Pressure Control Deluge Valve
is reset by the mere retrieval of the
release device to its set position.
The Electrically Actuated Inbal Pressure
Control Deluge Valve has several
optional solenoid valves:
Magnetic Latch Type Solenoid Valve:
when the Solenoid Valve is actuated it is
latched and holds the Inbal Deluge
Valve in an open position until resetting.
Non-Latch Solenoid Valve: Available in
types of "energized to open" and
"energized to close" the Inbal Deluge
Valve. When actuated, the Solenoid
Valve allows the Inbal Deluge Valve to
Note: For "energized to open" type Solenoid Valve - once actuated the Solenoid
Valve must remain energized as long as
the Inbal Deluge Valve’s open position
is required for flowing water to the area.
Refer to the Trim Chart applicable to the
specific Inbal Pressure Control Deluge
Valve model .
1.When the Inbal Deluge Valve is
delivered, carefully unpack and
check that there has been no damage
to the operating components, piping,
and fittings.
Restriction Orifice
Solenoid Valve
Alarm Test Valve
Drain Valve
2.Always flush the pipelines before
installing the Inbal Valve.
3.Place the Inbal Valve in the piping at
the outlet of the Water Supply Valve.
Verify that the arrow on the valve
Housing matches the actual flow
direction. Determine which side the
system will be accessed from and
locate the Inbal Deluge Valve
4.Install the Inbal Valve in the pipe
line. Use gaskets, bolts, stud bolts,
bolt sleeves, and nuts as required by
the valve ends.
5.Complete the trim assembly by
co nnecting the pr eassembled
sections or assemble the trim if
ordered in loose component form.
Refer to the applicable Trim Chart
and Installation Guide.
6.The water pressure supply to the
control trim must always be sourced
from the inlet of the Water Supply
Valve through a ½" pipe.
7.The Solenoid Valve must be wired in
accordance with the requirements of
the authorities having jurisdiction
and/or NEC, IEC, or CENELEC
standards and codes. Wiring should
be done by a licensed electrician.
8.Connect the drain tube of the
Solenoid Valve and all the other drain
tubes to the drainage system.
Deluge Valve, Pressure Control
Series 700D/DX - 03/13CR01
9.Open the Trim Shutoff Valve and
allow the water to fill up the inlet
branch of the control trim.
10.The downstream pressure adjustment
is recommended at a minimum flow
velocity of 1.5 ft /sec (0.5 m/sec).
When it is not feasible to flow the
system, close the system shutoff
valve and open the Drain Valve.
11.Operate the system to establish the
minimum flow. Check the System
Pressure Gauge reading. If adjustment is required, turn the pilot valve
adjusting screw clockwise to increase
or counter-clockwise to decrease the
pressure setting.
12.Open the system shutoff valve and
close the Drain Valve.
13.Set the Inbal Pressure Control
Deluge Valve by following the
Resetting procedure.
14.Test the Inbal Pressure Control
Deluge Valve and the trim according
to the Testing procedure.
The Inbal Pressure Control Deluge
Valve system must be reset and restored
to service as soon as possible after
automatic, emergency, or manual
1.After automatic or manual electric
operation - reset the Solenoid Valve.
The Inbal Deluge Valve will close drip
tight. The water flow alarms and
Electric Alarm are reset.
2.After manual emergency operation close the Emergency Release Valve.
The Inbal Deluge Valve will close drip
tight and water flow alarms are reset.
In either one of the operations
exercised, the piping system should be
Maintenance, Inspection, & Testing
It is recommended that periodic inspections and tests be conducted by qualified
personnel to ensure that the Inbal Pressure
Control Deluge Valve and related
equipment are in good operating condition.
The inspection and testing activities should
be done according to NFPA Standards,
the guidelines and regulations of the
authorities having jurisdiction, and the
following instructions. It is recommended
that the Pressure Control Deluge Valve be
tested, operated, cleaned, and inspected at
least on a routine basis.
A weekly Inspection is recommended:
1. Verify that the Water Supply Valve is
sealed in a fully open position.
2. Verify that the required water pressure
is being applied to the Inbal Deluge
Valve inlet and trim.
3. Verify that the Trim Shutoff Valve,
Emergency Release Valve, Pressure
Gauge Valve, Solenoid Valve,
Pressure Reducing Pilot Valve, and
Drain Valve (if in use) are in set
4.Check the Supply and System
Pressure Gauge readings.
5. Visually inspect for disconnected
wires, broken or missing parts, or
other evidence of impaired protection.
Strainer Cleaning
A quarterly Strainer Cleaning is
1. Close the Trim Shutoff Valve.
2. Remove the covers of the trim and
alarm Y-strainer. Clean if necessary.
3.Open the Trim Shutoff Valve.
Alarm Testing
A quarterly Alarm Testing is
1. Test the Water Motor Alarm or Alarm
Pressure Switch by opening the Alarm
Test Valve.
2. Water Motor Alarm should be audible.
Alarm Pressure Switch should
3. Close the Alarm Test Valve. All local
alarms stop sounding and pressure
switch is reset.
4. Verify that the supply piping to the
alarm drains properly.
Deluge Trim Testing
A semi-annual Deluge Trim Testing is
recommended. Testing of the control
trim is conducted with no flow of water
to the system.
1. Close the Water Supply Valve
installed in the inlet of the Inbal
Deluge Valve.
2. Actuate the Solenoid Valve.
Verify that water is drained from the
deluge trim which simulates an open
position of the Inbal Deluge Valve.
The Electric Alarm should operate.
3. Reset the valve by performing the
instructions in Resetting.
4. Open the Water Supply Valve.
Trip Testing
An annual Trip Testing is recommended.
By performing the Trip Testing, water
will flow from all open sprinklers and/or
nozzles. Prevent damage by taking the
necessary precautions.
1. Trip the Inbal Valve to open by
actuation of the Solenoid Valve. A
flow of water is released from the trim.
The Inbal Valve will open and water
will flow to the system.
2. Check the Supply and System Pressure
Gauge readings. Verify that the
delivery pressure is as predetermined.
3. Record the actual flow rate and
upstream and downstream pressures.
4. Verify that all the alarms operate
5. Reset the system by performing the
instructions in Resetting.
6. Verify that water supply pressure is
restored to the normal level as
recorded in (3) above.
To remove the Inbal Deluge Valve:
1. Close all the pressure supply valves:
a) Water Supply Valves.
b) Trim Shutoff Valve.
2. Disconnect the electric wires from the
solenoid valve. The electric work
should be done by a licensed
3. Open the Emergency Release Valve to
release the water pressure from the
Inbal Valve Control Chamber.
4. Open the Drain Valve to allow all the
water to drain.
5. Disconnect the union and remove the
trim from the valve.
6. Remove the Inbal Deluge Valve from
the line for inspection.
7. To reinstall, follow the Installation
procedure (use new gaskets for
flanged or wafer valve).
The Data Sheet For Inquiries/Orders
(bulletin F01-05-01) should be
Mil Ltd. 17 Moshe Beker Street, P.O.Box 15200, Rishon Lezion 75051, Israel. Tel: +972 3 966 4350, Fax: +972 3 966 4320, E-mail:inbalvl@
March 2000 / F06-04-01
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