Is-909 Underground Fire Hydrant
Is-909 Underground Fire Hydrant
Is-909 Underground Fire Hydrant
Indian Standard UNDERGROUND FIRE HYDRANT, SLUICE VALVE TYPE - SPECIFICATION ( Third Revision )
First Reprint JULY 1998
UDC
614.843~1
@ BIS 1992
BUREAU
MANAK
OF
BHAVAN,
INDIAN
STANDARDS
ZAFAR MARG
Price croap 3
Committee,
CED 22
FOREWORD This Indian Standard ( Third Revision ) was adopted by the Bureau of Indian Standards, after the draft finaliied by the Fire Fighting Sectional Committee had been approved by the Civil Engineering Division -Council. Hydrants are invariably used for fire fighting purposes hydrants could be stand-post type or underground, covering underground fire hydrants, sluice-valve type 1965. The second revision has been prepared to bend besides making other contents up to date. to derive water from the water line. The that is, sluice-valve type. This standard was first published in 1958 and revised in incorporate complete details of duck-foot co-ordination to relating it major
In the formulation of this standard, due weightage has been given to international among the standards and practices prevailing in different countries in addition to the practices in the field in this country. In the present revision of the standard, changes have been introduced: in addition to general updating,
the following
a) A detailed figure of Underground Fire Hydrant ponents giving their details has been included. b) Valve seat tightness test has also been included
of this standard is of deciding whether a particular requirment For the purpose or calculated, expressing the result of a test complied with, the final value, observed or analysis, shall be rounded off in accordance with IS 2 : 1960 Rules for rounding off numerical values ( revised). The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.
IS 909:1992,
Indian Standard
4.3 Spindle shall be made of brass conforming to IS 320 : 1980 or IS 319 : 1974 or stainless steel Gr 04 Cr 18 Ni l(1 conforming to IS 6603 : 1972. 4.4 Gaskets shall be made of rubber conforming to IS 937 : 1981 or IS 638 : 1965 or leather conforming to IS 581 : 1976 or compressed asbestos fibre conforming to .IS 2712 : 1979. 4.5 Gland packing shall be of conforming to IS 4687 : 1980. asbestos thread
NTPC-Ramagundam Date: 18-08-2006 Time 11:35:56
2 REFERENCES The Indian Standards listed in Annex necessary adjuncts to this standard. 3 GENERAL REQUIREMENTS A are
4.6 Bolts and nuts shall be made of carbon steel conforming to,IS 1367 ( Part 14 ) : 1984. 5 ROAD SURFACE BOX
The hydrant shall consist of the following components ( see Fig. 1A and Fig. 1B ): a) b) c) d) e) f) g) h) j) Body Bonnet Spindle Gland Spindle cap Spindle nut Valve Screwed outlet Outlet cap and chain
The road surface box shall be made according to the details given in Fig. 2. The minimum weight of the surface box shall be 135 kg. When a second sluice-valve is provided surface box for this sluice-valve shall conform to IS 3950 : 1979. .6 CONSTRUCTION AND DIMENSIONS
4 MATERIAL 4.1 Body, .bonnet, gland, outlet cap and spindle cap shall be made of cast iron grade FG 200 of IS 210 : 1978. 4.2 Outlet, seat for valve, valve, spindle nut, check nut shall be made of copper alloys as stated below: a) Sand Casting - LTB-2 of IS 318 : 1981 or HTB 1 of IS 304 : 1981 b) Die castings - LCB 2 of IS 292 : 1983 c) Hot forging - Grade 1 of IS 291 : 1989 1
The outlet of the hydrant shall be of screwed type and provided with external round thread ( two threads per 2.54 cm ) as showi. in Fig. 3. It shall be attached to the flanged end of the pipe by means of bolts. The outlet cap shall completely cover the outlet thread and be attached to the outlet by means of a chain made from steel stock not less than 3 mm in diameter or from material having equivalent strength, with the chain length and its attachment arranged to permit removal of the cap without binding. Suitable anti-corrosive treatment should be given to the chain. 7 FINISH All parts shall be of good finish, clear of all burrs and sharp edges. All castings shall be clean and sound excluding of plugging, welding or repairs of any defects.
IS 909 : l992
DETAILS DETAILS OF
OF A REDUCER
FLANGED
8Omm VA
80 mm DUCKFOOT
~30 mm FLANGE
I-=
100 min.
min.
9200 Nut and Bolt Chain---14 ----Cap 13 __~-----Outlet t 12 Drain 11 _p-e---- Bolt __-Snindle Caa :li)_ : __.-- , Grush Screw ( 12 mm ) 9 Gland l_LI i *; l__.__ Suiudle -r ------or
rs
I_._I_4
IS :210-1978 FG-200 ~-IS ! 319-1989 IS : 21055%%Gx m:318-1981 LBT-2 tG.M.--------318-1981 LTB-2 I IS: -_---RUBBER ---: 937-1981 IS IS : 318.1981 LTB-2 0. M. --p-pIS :210-1972 FG-200 c. I. Mat. Specification Mat.
!M.
IS :210-1978 --6094-I
FG-200
98 1
-__ .
Fla
ITJ
UNDBRGROUNDFIREHYDRA~,SLUICE-VALVB 3
GATE
Is909:1992
I_
165
--I
SECTtON
XX
NTPC-Ramagundam Date: 18-08-2006 Time 11:35:56
______-_----------~-NOTE -The tolerance in dimensions shall be +2 mm for up to and includmg and above and up to arid incluling 50 mm, and f 5 mm for 51 mm and above. All dimensions FIG. 2
FEATHER EDGE TO BE REMOVED
15 mm, f 2 mm or 16 mm
in millimetres.
BE
THREAOEO
t-
k:.;;n
,-I?
2.85
3A
OUTLET
AND
CAP
3B
DETAILS
OF THREAD
OF OUTLET
IS 909 : 1992 8 COATING OF PARTS OTHER SLUICEVALVE THAN 10 PERFORMANCE 10.1 Hydrostatic REQUIREMENTS
8.1 Immediately after casting and before machining all cast iron parts shall be thoroughly cleaned, and before rusting commences, shall be coated by dipping in a bath containing a composition having a bituminous base ( see IS 158 :. 1981 ) and maintained at a temperature between 143 and 166C. The proportions of the ingredients of the composition shall be so regulated as to produce a coating having the properties specified in 8.3. 8.2 The casting shall be re-heated before dipping; either by immersion in hot water or by heating in an oven, or shall be held in the dipping bath sufficiently long to reach an equivalent temperature, the method used being at the makers option. Care shall be taken to see that the casting are perfectly dry immediately before dipping. On removal from the bath the castings shall be sufficiently drained and ensure that no portion is left uncoated. 8.3 The coating shall be such that it shall not impart any taste or smell to water. The coating shall be smooth, glossy and tenacious, sufficiently hard so as not to flow when exposed to a temperature of 77C and not so brittle at a temperature of 0C as to chip off when scribed lightly with the point of a penknife. 9 PAINTING Complete hydrant shall be painted externally with two coats of fire red paint conforming to .shade No. 536 of IS 5 : 1978. The cover of the road surface box shall be painted with two coats of canary yellow colour paint conforming to shade 309 of IS 5 : 1978.
Pressure Test
Each assembled unit shall be subjected to a hydrostatic pressure of 2.1 MN/ma with the valve open and outlet closed for a period of 2.5 minutes for the purpose of locating porosity in the casting. When so tested, it shall not fail or show any sign of leakage either through the valve body or through the gland of the spindle. 10.2 Valve Seat Tightness Test The stop valve shall be fully closed by screwing down the spindle. A hydrostatic pressure of 1.4 MN/me shall then be applied to each valve on its inlet side. There shall be no leakage through the valve and its seat. 11 CRITERIA FOR ACCEPTANCE requireNTPC-Ramagundam Date: 18-08-2006 Time 11:35:56
Each hydrant shall be tested for the ments prescribed in this standard. 12 MARKING
12.1 Each hydrant shall be clearly and permanently marked with the following information: a) Manufacturers name or trade-mark, b) Year of manufacture. and
12.2 The cover of the road surface box shall have the letters <FH embossed on it and painted in black colour. 12.2.1 The hydrant may also the Standard Mark. be marked with
IS 909: 1992
ANNEX
( Clause 2 )
IS No. 5 : 1978 158 : 1981 Title Specification for grey iron castings ( second revision ) Specification for ready mixed brushing bituminous, !:laa$ leadfree acid alkali waterand hea; resisting fo; general purposes ( second revision ) Grey iron revision ) castings ( third IS No. 320 : 1980 581 . 1976
l
Title High tensile brass rods and section ( other than forging stock ) ( second revision ) Vegetable tanned hydraulic leather ( second revision ) %;;kr rubber jomting and msertion jointing ( second revision ) Washer for water fittings for fire fighting purposes ( second revision ) Technical supply condition for steel threaded fasteners : Part 14 Stainless steel threaded fasteners ( second revision ) Compressed asbestos fibre joint ( second revision ) Surface boxes for sluice valves ( $rst revision ) Gland packing asbestos (first revision ) Hexagon socket set screws (first revision ) Stainless steel bars and flats
638 : i979
937 : 1981
Naval brass rods and sections ( suitable for machining and forging ) ( second revision ) Leaded brass ingots and0 castings ( second revision ) High tensile brass ingots and castings ( second revision ) Leaded tin bronze ingots and castings ( second revision ) Free-cutting and sections brass bars, rods ( third revision )
1367 $Ptit 14) : 2712 : 1979 3950 : 1979 4687 : 1980 6094 : 1981 6603 : 1972
Bureau of Indian Standards BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country. Copyright BIS has the copyright of all its publications. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to copyright be addressed to the Director (Publications), BIS. Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of BIS Handbook and Standards: Monthly Additions. This Indian Standard has been developed from Dot : No. CED 32 ( 46 IO )
Date of Issue
Text Affected
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OF INDIAN
STANDARDS
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