IS 8442: Stand post type water and foam monitor for fire fighting -Specification

2008·1.2 MB·English

by  Bureau of Indian Standards

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IS 8442 (2008): Stand post type water and foam monitor for
fire fighting -Specification [CED 22: Fire Fighting]
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IS 8442:2008

Indian Standard
STAND POST TYPE WATER AND FOAM MONITOR
FOR FIRE FIGHTING — SPECIFICATION
( First Revision)
ICS 13.220.10
0 BIS2008
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI i10002

May 2008 Price Group 4
Fire Fighting Sectional Committee, CED 22
FOREWORD
i, This Indian Standard (First Revkion) was adopted bythe Bureau ofIndian Standards, after the draft finalized by
the Fire Fighting Sectional Committee had been approved by the Civil Engineering Division Council.
Watermonitors arefixed onthe fire fighting appliances andareoneofthe important equipment used for fighting
fire. Whh the help of this equipment it is possible to direct the flow of water at any angle on horizontal and
vertical axis. This standard has been formulated tolay down minimum performance requirements.
When the water monitor is used with sea water, aluminium parts should not be used.
This standard wasfirstpublished in 1977.The present revision includes modifications with regard toinclusion of
copperalloyandstainless steelcomponents andfigureshavebeenmodified according tovarious typesofmonitors.
The materials ofconstruction are given inTable 2with anidea to usecompatible material for allcomponents in
individual monitor.
For the purpose of deciding whether aparticular requirement of this standard iscomplied with, the final value,
observed or calculated, expressing the result of a test or analysis, shall be roundedoffinaccordancewith
IS2:1960 ‘Rules for rounding off numerical values (revised)’. The number of significant places retained inthe
rounded off vafue should be the same asthat of the specified value inthis standard.
IS 8442:2008
Indian Standard
STAND POST TYPE WATER AND FOAM MONITOR
FOR FIRE FIGHTING — SPECIFICATION
(First Revision)
1SCOPE g) Nozzle (details as given in5.2),
This standard lays down the requirements for stand h) Handle orworm and worm wheel tofacilitate
post typemonitor of size63 mm, 75 mm and 100mm vertical rotation, and
used for fire fighting. This standard covers following j) Drain valve.
types of monitors:
4MATERIAL
a) Water monitor, and
Material for different components shall be as per
b) Foam-cum-water monitor:
Table 2.
1) With water/foam barrel with aspirating
NOTES
type nozzle, and
2) With non-aspirating type jet(spray 1Ahsminium components shalI not be used with sea water.
2 The material of construction to be seJected as agreed to
nozzle.
between the purchaser and the manufacturer k~pkg in V!EW
2 REFERENCES the compatibility of materials.
The standards listed in Annex A contain provisions, 5CONSTRUCTION
which through reference in this text constitute
5.1 Monitor shall have the flange of diameter
provisions ofthis standard. Atthetime ofpublication,
corresponding to standpost, that is, 63 mm, 75 mm
the editions indicated were valid. All standards are
and 100mm respectively. Flanges of higher sizemay
subject torevision andparties to agreements based on
beusedfor better hydraulic efficiency andinthatcase
this standard are encouraged to investigate the
itshallbewelded withreducer. The swiveljoint which
possibility of applying the most recent editions of the
shall be connected with pipe by screwing or welding
standards indicated atAnnex A.
so as to have horizontal rotation of 360° in either
3GENERAL direction and vertical rotation of minimum 135° (90°
upward and 45° downward). Traversing mechanism
3.1 The size of water monitor is denoted by its
shallbeprovided tofacilitatethehorizontal andvertical
waterway dimension which shall be asper Table 1or
rotation of monitor. This shall be either single handle
provided by thepurchaser asper their requirement.
bartypeorworm andworm wheel type. Positive locks
3.2Monitors aredesigned for rated discharge capacity shall beprovided for unattended operation. Incaseof
of 1750 l/rein for 63 mm size, 2580 l/rein for 75mm worm and worm wheel geared unit, it shall be self-
size,and3500 l/rein for 100mm sizeatinlet pressure locklng type. Drain valve shall be fitted above inlet
of0.7 N/mm*,atnozzle end. flange todrain water from water barrel after usage.
3.3The shapeof themonitor shall besodesigned that
5.2 The construction of monitor shall be welded,
itshallallowfreeflowofwater withminimum friction
screwed or flanged. All screwed joints except nozzle
loss and maximum stability against nozzle reaction.
shall have minimum threading length of 20 mm and
The shapesaregenerally asshown inFig. 1andFig.2.
epoxy based sealant shall beused and threads shallbe
3.4Themonitor shallconsist offollowing components: locked permanently so that threads will not get
unscrewed during horizontal or vertical rotation of
a) Base flange,
monitor.Theoutletofbarrel shallhaveexternal threads
b) Reducer — wherever applicable,
confirming to IS 2643 with class A tolerance. The
c) Waterbarrel of seamless pipe,
nozzle shall be of standard orifice size as given in
d) Elbow 90° and 45°, Fig. 3, 4 and 5 and confirming to performance
e) Swivel joint for horizontal and vertical requirements given in 9.The inlet of the nozzle shall
rotation, be provided with external hexagon or other means to
f) Lock handles for horizontal and vertical facilitate tightening of nozzle and internal threads to
rotation, suit the monitor outlet barrel size.
IS 8442:2008
Table 1Flange Dimensions
(Clause 3.1)
S1No. Size of SizeofInlet Outer BoltCircle BoltHole No.ofHoles Thickness Flange
Monitor Flange Diameter Dmmeter Diameter Diameter/
(Nominal Height
Bore)
mm mm mm mm mm mm mm
(1) (2) (3) (4) (5) (6) (7) (8) (9)
i) 63 80 200 160 19 4 18 —
ii) 63 80 190.5 152.4 19 4 23.8 127/1.6
iii) 75 I00 220 180 19 4 20 —
iv) 75 100 220 190.5 19 4 23.8 157/1.6
v) 100 I(XI 220 180 19 8 20 —
vi) 100 100 220 190.5 19 8 23.8 157/1.6
vii) 100 150 285 240 22 8 22 —
viii) 100 150 280 240 22 8 25.4 216/1.6
THREADS TO SUIT
NOzzLE HANDLE
..
SWIVEL JOINT FOR ‘
VERTICAL ROTATION LOCK FOR VERTICAL
i
90° ELBOW
LOCK FOR HORIZONTAL 1
I
ROTATION
J SWIVEL JOINT FOR
HORIZONTAL ROTATION
I
DRAIN VALVE
REDUCER
BASEFLANGE
,
rl~l , III
FIG. 1STANDPOSTTYPEMONITOR
‘1
IS 8442:2008
Table 2 Material
(Foreword, and Clause 4)
S1 Component Material
No.
/ \
Mild Steel Copper Alloy Construction Stainless Steel
Construction Construction
(1) (2) (3) (4) (5)
i) Base flange Carbon steel conforming to Grade 2/3 ofIS318 or Plates, sheets conforming toIS6911
IS6392 or Mild steel conforming Grade 3ofIS304
to IS2062
ii) Reducer Pipe fittings conforming to [S Grade 2/3 ofIS318 or Stainless steel
11428(Parts1to3) Grade 3of1S304
iii) Elbow Pipe fittings conforming toIS Grade 2/3 ofIS318 or Stainless steel
11428 (Parts 1to3) Grade 3ofIS304
iv) Swivel jointi Grade 2/3 of IS318 orGrade 3of Grade 2/3 ofIS318 or Grade 2/3 of1S318 or
worm and Is304 Grade 3ofIS304 Grade 3of IS304 orStainless
worm wheel steel conforming toIS6603
v) Lock handle Brass conforming to IS291 or Brass conforming toIS291 or Stainless steel conforming to
IS319 orstainless steel IS319 orS.S. conforming to 1S6603
conformingtoIS6603 IS6603
vi) Water barrel Mild steel conforming to IS 11428 Brass tube conforming to IS407 Stainless steel
(Parts 1to3)or brass tube
conforming to IS407 or
aluminium conforming to
1S1285 and IS2673
vii) Nozzle/Jet Copper allo] conformin~ t? ~~~$ QPpgI alloyconformintogGrade Mainltwsleelcmtfhmifi?gB
spray nozzle 2/3 of 2/3 ofIS318 orGrade 3ofIS304 Is3444
IS 318 orGrade 3ofIS304 or
aluminium alloy conforming to
Grade 4450 or4225 ofIS617
viii) Handle Mild steel conforming to IS 1732 Mild steel conforming to Mild st:el conforming to IS 1732
1S1732
ix) Worm shatl Stainless steel conforming to Stainless steel conforming to Stainless steel conforming to
IS 6603 IS6603 IS6603
x) Foam barrel Brass tube conforming toIS407 or Brass tube conforming toIS407 or Stainless steel
ahrminium conforming to 1S1285 ahrminium conforming to IS 1285
and IS2673 and IS2673
xi) Hand wheel Cast iron conforming toGrade 200 Cast iron conforming toGrade 200 Cast iron conforming toGrade 200
of Is 210 Ofls 210 ofIs 210
xii) Drain valve Copper alloy conforming to IS778 Copper alloy conforming to IS778 Stainless steel
6WORKMANSHIP AND FINISH of 0.7 N/mmz at nozzle end, at an angle of 30° from
horizontal instill aircondition. Itshallhaveminimum
Thecomplete assembly shallbeofgood workmanship
discharge capacity and horizontal throw as given in
and finish and free from burrs and sharp edges.
Table 3.
Particularly, waterway shall have smooth finish.
7ANTI-CORROSIVE TREATMENT Table 3 Minimum Discharge Capacity and
Horizontal Throw of Water Monitor
Allsteelcomponentssubjecttodirectwatercontactshall
be hot dip galvanized after fabrication to a minimum S1No. Size DischargeCapacity HorizontalThrow
thickness of 0.03 mm. The aluminium parts subject to Min &fin
directwatercontactshaIlbehardanodizedtoaminimum mm I/rein m
thicknessof0.015mm.Thethicknessofgalvanizingshall (1) (2) (3) (4)
bemeasuredwithsuitablethicknessmeasuringmeter. i) 63 1750 53
ii) 75 2580 60
8PAINTING iii) 100 3500 64
Monitor shall be painted with fire red or post office
red colour conforming to shade No. 536 or 538 of 9.2 Foam-cum-Water Monitor
IS 5.The paint shall conform to IS 2932.
The monitor shall be tested at operative pressure
9PERFORMANCE REQUIREMENTS of 0.7 N/mm* at nozzle end, at an angle of 30° from
horizontal in still air condition. It shall have
9.1 Water Monitor
minimum discharge capacity and horizontal throw
The monitor shall be tested at operative pressure asTable 4.

3
IS 8442:2008
FIG.2 STANDPOSTTYPEMONITOR-WORMANDWORMWHEELTYPE
I \ SMALLER ORIFICE TIPS I
NOTES
1The Orifice Diameter for63 mm, 75 mm, and 100mmSizeShall be Respectively 32 mm, 38mm, and 45mm, Min.
2The Length (L)of Nozzle Shall beSuch astoGiveDesired Performance Requirement.
FIG.3JETSPRAYNOZZLE

4
kdl&
IS 8442:2008
& L
FOAMINDUCTION
BODY
1, J
,r. ----- --------
(
!YA’pROx”)
k‘\,
‘\ STRAINER
‘\ (600mmLONGAPPROX.)
‘\,
\
‘\,
\
\
\
‘\%
\
FIG.4 AIR ASPIRATIONTYPEFOAMlNDUCEDNOZZLE
ROL
“CKV
(3000mm LONGAPPROX.)
k STRAINER
APPROX.)
FIG.5 NON-AIRASPIRATINGTYPEJET/SPRAYNOZZLE

5