is 9121 (2005): inspection gauges for checking type 1 ... · 7.2 master taper thread plug gauge...
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है”ह”ह
IS 9121 (2005): Inspection Gauges for Checking Type 1 (Size2) Taper Threads of Gas Cylinder Valves, Taper 1 in 16 [MED16: Gas Cylinders]
~ ‘“’
IS9121:2005
Indian Standard
INSPECTION GAUGES FOR CHECKINGTYPE 1 (SIZE 2) TAPER THREADS OF
GAS CYLINDER VALVES, TAPER 1 IN 16 —SPECIFICATION
(First Revision)
...— —
ICS 17.040.01:23.020.30
0 BIS 2005
BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
March 2005 Price Group 8
Gas Cylinders Sectional Committee, ME 16
FOREWORD
This Indian Standard (First Revision) was adopted by Bureau of Indian Standards, after the draft finalized by theGas Cylinders Sectional Committee had been approved by the Mechanical Engineering Division Council.
In this standard, changes have been incorporated in the light of the experience gained by the industry and consumersover the years. The requirement of limits on taper of both internal and external threads provided in the standardfor the NGT threads AN SI/CSA/ STANDARD V-1-1987 ‘Compressed gas cylinder valve outlet and inletconnection’ issued by the American National Standard Institute and Compressed Gas Association, Inc., thisbeing the standard forming the basis of these threads. Relevant portions of the specification of the threads havebeen reproduced in this revision. With this requirement to inspect the taper of the threads, the method ofchecking relative engagement of the product threads in the threaded and plain taper ring and plug gauges hasbeen included in this revision.
The composition of the Committee responsible for formulation of this standard is given in Annex B.
For the purpose of deciding whether a particular requirement of this standard is compiled with, the final value,observed or calculated, expressing the result of a test or analysis, shall be rounded off in a accordance withIS 2: 1960 ‘Rules for rounding off numerical values (revise@’. The number of significant places retained in therounded off value should be the same as that of the specified value in this standard.
IS 9121:2005
Indian Standard
INSPECTION GAUGES FOR CHECKINGTYPE 1 (SIZE 2) TAPER THREADS OF
GAS CYLINDER VALVES, TAPER 1 IN 16 —SPECIFICATION
(First Revision)
1 SCOPE
This standard prescribes dimensions, tolerancesand material requirement of inspection gaugesrecommended for checking the taper threads on thevalve stems and the taper threads on the cylinder necksof compressed gas cylinders — the threads conformingto Type 1 (size 2) covered in IS 3224 and Type 1covered in IS 8737.
2 REFERENCES
The standards listed below contain provisions, whichthrough reference in this text, constitute provisions ofthis standard. At the time of publication, the editionsindicated were valid. All standards are subject torevision, and parties to agreements based on thisstandard are encouraged to investigate the possibilityof applying the most receht editions of the standardsindicated below.
1sNo. Title
1570 (Part 2): 1979 Schedules for wrought steels Part2 Carbon steels (unalloyed steels)(first revision)
1586:2000 Method for Rockwell Hardnesstest for metallic material (ScalesA-B-C-D-E-F-G-H-K 15N, 30N,45N, 15T, 30T and 45T) (fhirdrevision)
3224:2002 Valve fittings for compressed gascylinders excluding liquefiedpetroleum gas (LPG) cylinders —Specification (third revision)
8737:1995 Valve fittings for use withliquefied petroleum gas (LPG)cylinders of more than 5 litrewater capacity — Specification(first revision)
3 MATERIAL
Suitable wear resisting, steel, for example, 435C6 of1S 1570 (Part 2) may be used.
4 DIMENSIONS OF THREADS ON VALVESTEMS AND IN CYLINDER NECKS
4.1 Basic Thread Form (see Fig. 1)
4.2 Principal Dimensions (see Fig. 2)
4.3 Limits on Crest and Root Truncations (seeFig. 3)
4.4 Limits on Size
Final inspection limits on size (pitch diameter) of bothexternal and internal threads are * 1 turn from basicalthough the preferred working limits are * %turn frombasic.
4.5 Limits on Taper
If there is an unintentional difference in taper atthe pitch elements of the valve and of the cylinderthreads, it is preferred to have greater tightness atthe bottom of the valve. The limits in gauging shallbe:
a) Taper on pitch elements of external threadsshall be 1 in 16 on diameter, with a minustolerance of one turn, but no plus tolerance ingauging.
b) Taper on pitch elements of internal threadsshall be 1 in 16 on diameter, with a plustolerance of one turn, but no minus tolerance ingauging.
4.6 The tolerance on 60° angle of threads shall bei 2“.
4.7 The maximum taper on pitch line per millimetreshall be 0.0729 and the minimum 0.0573.
5 DIMENSIONS AND TOLERANCES OFGAUGES FOR CHECKING THREADS INCYLINDER NECK (INTERNAL THREADS)
5.1 Taper Thread Plug Gauge for CheckingPitch Diameter in Cylinder Neck L,, Gauge A(see Fig. 4)
5.2 Full Form Taper Thread Plug Gauge forChecking Thread in Cylinder Neck L9,Gauge B(see Fig. 5)
5.3 Plain Taper Plug Gauge for Checking CrestTruncations of Internal Thread, Gauge C(see Fig. 6)
1
1S 9121:2005
6 DIMENSIONS AND TOLERANCES OFGAUGES FOR CHECKING THREADS ONVALVE STEMS (EXTERNAL THREADS)
6.1 Taper Screw Ring Gauge for Checking Threadof Taper Stem L,,Gauge D (see Fig. 7)
6.2 Full Form Taper Screw Ring Gauge forChecking Thread of Taper Stem L,,Gauge E (seeFig. 8)
6.3 Plain Taper Ring Gauge for Checking CrestTruncations of External Threads, Gauge F (seeFig. 9)
7 DIMENSIONS AND TOLERANCES OFMASTER PLUG GAUGES
7.1 Master Taper Screw Ring Gauge (GaugeM-INT), to Check L,(Gauge A) and L,(Gauge B)(see Fig. 10)
7.2 Master Taper Thread Plug Gauge (GaugeM-EXT), to Check L,(Gauge D) and L,(Gauge E)(see Fig. 11)
8 USAGE OF GAUGES
Usage of gauges is given in Annex A.
9 GENERAL REQUIREMENTS OF GAUGINGSURFACES
9.1 Hardness
Minimum 60 to 62 HRC (Rockwell, Scale C) whendetermined according to IS 1586.
9.2 Finish
Gauging surfaces shall be ground, lapped and suitablystabilized. The method of stabilizing shall be as per
agreement between the manufacturer and the supplier.Surfaces other than the gauging surfaces shall befimished smooth.
10 DESIGNATION
The gauges shall be designated by:
Gauge type and number of this standard
Example:
A taper screw ring gauge for checking pitchdiameter of taper stem at length L1 shall bedesignated by:
Gauge D, 1S 9121
11 CORROSION PROTECTION AND PACKING
Gauges shall be protected against climatic conditionsby application of any anti-corrosive coating. Packingshould be suitable to prevent damage in transit.
12 MARKING
12.1 The gauge shall be markedwith me following
a) Designation,b) Manufacturer’sname or trade-mark,andc) Serial number.
12.2 BIS Certification Marking
The gauge may also be marked with the StandardMark.
12.2.1 The use of the Standard Mark is governed bythe provisions of the Bureau of Indian Standards Act,1986 and the Rules and Regulations made thereunder.The details of conditions under which a Iicence forthe use of the Standard Mark may be granted tomanufacturers or producers may be obtained fromBureau of Indian Standards.
2
mkw--.,,.. —— ‘-’-q
I
90°
f-H
1
I
AXIS I---@’””
EXTERNALTHREAD
Fc
{
lS 9121:2005
f~
-b=INTERNALTHREAD
Pitch measured parallel to axis, p = 1.814
Thread angle 60° normal to the axis
Taper 1 in 16 measured on the diameter along the axis
H = 0.866025p-height of 60° sharp Vthread = 1.57122
h = 0.800000p= height of thread on product= 1.45143
f‘) = Depth of truncation at crest, ~) = Depth of truncation at rootcf:) = Width of flat at crest, ~’) =Width of flat at root
1)For limits ~ee4C3.
NOTE — The thread is same as %“ —14 National Gas Taper (NGT) threads of ANSVCSWCGA
STANDARD V-1 —1987.
All dimensions in millimetres.
FIG. 1 BASICTHREADFORN
.... —
IS 9121:2005
0I
CLEARANCE = 2pI “RELIEF GROOVE-OPTIONAL”
REFERENCE PLANE Y/////A IINTERNAL THREADS w////
I 6+HD 1!
Lg -1 I
REFERENCE PLANE
1=, FOR GAUGING
I DoEXTERNAL THREADS
.— 7
) + ! 0K3.
I @ E3
I
iSIVLE B
TYPICAL LOW
STYLE APRESSURE CYLINDER NECK
D=
E=
K=
TYPICAL NECK OFDRAWN CYLINDER
Major diameter
Do = 26.03D,. = 27.42
Pitch diameter
E. = 24.58El = 25.118
E% = 24.24E, = 25.798
Minor diameter
K, = 22.79Standard handtight engagement= 8.611
3 threads (for wrenching)
14.05
Length of full external threads= 19.497
Length of full roots (minimum) on internal threads= 17.681
Overall length of external threads (approx) = 23
L, =
~.
L,+L3 =
L, =
L, =
L,. =
Diameter at small end of the valve after chamfer= 23
All dimensions in millimetres.
FIG.2 PIUNCIPALDIMENSIONS
4
IS 9121:2005
INTERNAL THREAD
N
P=
H=
h=
f=
F=
. \.TRUNCATION ‘
EXTERNAL THREAD
Pitch = 1.814
Height of sharp Vthread = 0.866 025p= 1.57122
Height of thread on product = 1.4514, Max/l .2880, Mirr
Truncation on crest and root
f.,n= 0.033P = 0.05987●
f~.x= 0.078p = 0.14151
Tolerance = 0.08164
Equivalent width of flat
Fw,n= 0.038p = 0.06894
F.W=0.090p = 0.16329
Tolerance = 0.09435
All dimensions in millimetres.
FIG.3 LIMITSONCRESTANDROOTTRUNCATIONS
5
IS 9121:2005
r%CONFIGURATION OF SHANK TOSUIT MOUNTING IN GUAGING SETUP
PARAMETERS AT BASIC NOTCHPITCH DIA. = 25.118MM308
MAJOR DIA. = 26.144+0.025
1.814-o +o.025
1.814 -O
I 1 I I1 J 1
It +01
L,= 8.611 - 0.0z5~
~t’
!
k d
It~ TAPER 1:16 ON DIA.
PITCH DIA. = 24.580+0
MAJOR DIA. = 25.606 -0.025
1 “ 47’24”
0.
*IO’
L! 1
AXIS
ENLARGED THREAD FORM
Taper 1 in 16 on diameter
Tolerance on taper in length, L, = ~ ~015
Tolerance of lead in length, L, = * 0.005
All dimensions in millimetres.
FIG.4 TAPERTHREADPLUGGAUGETOCHECKPITCHDIAMETERINCYLINDERNECK,GAUGE‘A’ (L{)
6
IS 9121 :2005
Lg=
I
~
CONFIGURATION OF SHANK TOSUIT MOUNTING IN GUAGING SETUP
tI
[
I 1I PITCH DIA. = 24.580f0.008
I +0 I MAJOR DIA. =25.86517.681-0.025
TAPER 1:16 ON DIA
I*
9.070i i
f f
fI I
f+ PITCH DIA. = 24.013
I I I +0
1. MAJOR DIA. = 25.299-0.025MINOR DIA. RELIEVED
~10 47’24-
0.
30”*1O’
~A)(ls
ENLARGED THREAD FORM
Taper 1 in 16 on diameter
Tolerance on taper in length 9.070 = ~015
Tolerance of lead in length 9.070 = * 0.005
..
All dimensions in millimetres.
FIG. 5 FULLFORMTAPERTHREAOPLUGGAUGEFORCHECKINGTHREAOIN
CYLINDERNECK,GAUGE‘B’ (L,)
7
‘1”’’””7
IS 9121:2005
In CONFIGURATION OF SHANK TOSUIT MOUNTING IN GUAGING SETUP
I
++-)L1=8.61; iO.038 f
GRIND AND LAP TAPER 1:16 ON DIA.
ToLERANcE ‘1.044 PER m ON DIA.
I II THIS PARAMETER CORRESPONDS
L / TO THE MINOR DIAMETER
+() OF THE THREADS ON LARGE
023.129-0.005 END BASIC STEP WITHMINIMUM TRUNCATION OF THREAD.
--- —
All dimensions in millimetres.
FIG. 6 PLAINTAPERPLUGGAUGETOCHECKCRESTTRUNCATIONIN
CYLINDERNECK,GAUGE‘C’
~-” ,
‘q
IS 9121:2005
I OD AND FINISH TO SUITGAUGING SET UP
— .—
u--5.842
PITCH DIA. 24.58MINOR DIA. 23.553
AT PLANE X-Xxl-. ~
xr—- -—.
1
1!1 ~i~I +0.025
Ill LI=8.611 -()
\ I 1 I I /
PITCH DIA
0.272–1
ENLARGED THREAD FORMTaper 1 in 16 on diameter
Tolerance in length, L,_ +0—-0.023
Right hand thread normal to axis
Tolerance of lead in length, L, = * 0.008
All dimensions in millimetres.
FIG.7 TAPERSCREWRINGGAUGETOCHECKTAPERTHREADONVALVESTEM,GAUGE‘D’ (L,)
9
IS 9121:2005
I +o.025
LB =19.497 -O
E
CLEARING DIA 27.5
PROJECTED DIAMETERSAT THIS DATUM PLANE
PITCH DIA 24.58
, “NORDr,
~ ~
/
+o.025
. OD AND FINISH TO SUIT GUAGING SETUP
%&
PITCH DIA ,
0.142-1
ENLARGED THREAD FORM
Taper 1 in 16 on diameter’
Tolerance in length 10.886 +0=-0.023
Right hand thread normal to axis
Tolerance of lead in length 10.886 = * 0.008
1.!w2
All dimensions in millimetres.
FIG. 8 FULLFORMTAPERSCREWRINGGAUGETOCHECK.THREADONVALVESTEM,GAUGE‘E’ (L,)
.
10
L, =
IS 9121:2005
t-CONFIGURATION TO SUIT GUAGING SET UP
1TAPER 1 IN 16ON DIAMETER
A v
8.61 1 iO.038I
\ I
I
DIAMETER AT LARGE ENDCORRESPONDING TO
MAJOR DIA. WITH MINIMUM
+0TRUNCATION=26.568 -0.005
r- ,
All dimensions in miIlimetres.
FIG.9 PLAINTAPERRINGGUAGETOCHECXCRESTTRUNCATIONOFEXTERNALTHREAD,GAUGE‘F’
11
1S 9121:2005
PARAMETERS AT GAU,GING PLANE I(LARGE END)
MAJOR DIA. CLEAREDPITCH DIA 25.118 tO.008
+f3.025MINOR DIA 24.1 -o
1- +
L9=
OD AND FINISH TO SUIT GUAGING SETUP
1
ENLARGED THREAD FORM
Taper 1 in 16 on diameter
Tolerance on taper in length, L, = + 0.015
Right hand thread normal to axis-o
Tolerance of lead in length 17.681 = *0.005
NOTE — The maximum permissible wear on taper thread plug gauges.!,, and L, shall be equ~~alentto % turmfrom basic.Accordingly, basic reference plane of master taper screw ring gauge (Gauge M-lNT) shall protrude by
maximum 0.9 mm from the basic step of the Plug gauges L, and L9. The setting of the dial indicators in the gauging
set-up (see Fig. 13) shall be done with reference to the basic reference face of the master taper screw ring gauge
(Gauge M-INi’).
All dimensions in millimetres.
FIG. 10 MASTERTAPERSCREWRINGGAUGE,‘M-lNT’
12
y----”-q
IS 9121:2005
II
n CONFIGURATION OF SHANK ASPER THE STANDARD PRACTICE
I I
I I TAPER 1:16 ON DIA.
A! \
\ /
! ! GAUGING PIANE “0’+0 I !
L8 =19.497-0.025 i !
~
!
I PARAMETERS ATSMALL END
PITCH DIA. = 24.56 iO.008+0
MAJOR DIA. = 25.606-0.025
1
‘LYI
1.814 i3tY*l o
ENLARGED THREAD FORM
Taper 1 in 16 on diameter
Tolerance on taper in length, L, = + 0.015
Right Hand Thread normal to axis-o
Tolerance of lead in length 19.497 = * 0.005
NOTE — The maximum permissible wear on taper screw ring gauges L, and L~ shall be equivalent to % turn
fmm basic. Accordingly, basic reference plane of master taper screw ring gauge (Gauge M-EXT)shall protrude
by maximum 0.9 mm from the basic step of the Plug gauges L, and L8. The setting of the dial indicators in the
gauging set-up (see Fig. 12) shall be done with reference to the basic reference face of the master taper thread
plug gauge (Gauge ~-~.
All dimensions in millimetres.
FIG. 11 MASTERTAPERTmw~ PLUGGAUGE,‘M-EXT’
13
1S 9121:2005
ANNEX A
(Clause 8)USAGE OF GAUGES
A-O Special gauges are required forthe gauging ofthese threads because of their length and the rigidrequirement for sealing the compressed gas againstleakage.
A-1 PITCH DIAMETER OF EXTERNALTHREAD
To check the size of the external thread for pitchdiameter, the thread ring gauge D is used. This gaugeD (also known as 1., ring gauge) is the primary gaugebecause the reading taken on this gauge will be neededfor use when additional gauging is done.
A-1.1 The gauge E (also known as L8 ring gauge) isused to check the taper of the external threads. It isscrewed onto the valve stem thread and its engagementrelative to that of the L, ring read at A-1 is noted.
A-2 CREST TRUNCATION OF EXTERNALTHREAD
To check the crest truncation of the external thread, theplain taper ring gauge F (also known as truncationgauge) is used. This gauge is placed over the taperthread and the engagement relative to that of L] ringat A-1 is checked.
A-3 Gauging of the thread with the three ring gaugesas stated above is illustrated hereunder with referenceto Fig. 13:
a)
b)
c)
To set the L, and L8 taper screw ring gauges(gauges D and E respectively), use master taperthread plug gauge M-EXT (see Fig. 11) screwedinto the rings and set the reading on the dialindicator at zero with the plunger tip on theindicator resting against small end (referenceface) of the master taper thread plug ensuringthat the whole millimetre readings on the smalldials is also equal on both the dials.
To set the plain taper truncation ring (gauge F),insert the setting distance piece (see Fig. 12)into the gauge with the face X of the settingplug pressed against the large end face of thetruncation ring. Set the plunger tip of the dialindicator against the face Yof the setting plugand adjust the dial at zero ensuring that the wholemillimeter readings on the small dial is identicalto that on the small dials of the two gauges asgiven in A-3 (a).
Screw the valve stem in taper thread ring gaugeD and note the reading on the dial indicator.The reading should be zero (as set on the dialindicator) *1 .814 mm for the purpose ofacceptability of the thread size. Note this reading
as R(EXVL1.
d)
e)
Screw the valve stem into gauge E. The readingon the dial indicator should be Rf~x~)Ll+1.814
for the purpose of acceptability o~”therequirement of relative engagement (see 4.5).
Place the valve stem into plain ta~er ringgauge F. The reading on the dial ;ndicato~
should be R(~x~)L1+2.60 for the purpose of
acceptability of the cr-% truncation of the thread.
A-4 PITCH DIAMETER OF INTERNAL”THREAD
To check the size of the internal thread for pitchdiameter, the thread plug gauge A is used. This gaugeA (also known as L] plug gauge) is the primary gaugebecause the reading taken on this gauge will be neededfor use when additional gauging is done.
A-4.1 The gauge B (also known as L~ plug gauge) isused to check the engagement relative to that with L,plug gauge.
A-5 CREST TRUNCATION OF INTERNALTHREAD
To check the crest truncation of the internal thread,the plain taper plug gauge C (also known as truncationgauge) is used. This gauge is placed into the internaltaper thread and the engagement relative to that withf.] plug is checked.
A-6 The gauging of the internal thread with the threegauges as stated above is illustrated hereunder withreference to Fig. 13:
a) Using the master taper screw ring shown inFig. 10 and the plunger tips of the respectivedial indicators resting against the face of themaster ring, set the readings on all the dialindicators at zero ehsuring that the wholemillimetre readings on the small dials is alsoequal on all the three dials.
b) Screw the taper threa&plug gauge A into theinternal thread to be gauged and note the readingon the dial indicator. The reading-should be* 1.814 mm for the purpose of acceptabili~ ofthe thread size. Note this reading as ~ L1.
c) Screw the taper thread plug gauge B into theinternal thread being gauged. The reading onthe dial indicator should be ~~*NT)Ll_~.814mm
for the purpose of acceptability of meeting therequirement of relative engagement (see 4.5).
d) Now place the plain plug gauge C into theinternal thread to be gauged. The reading onthe dial indicator should be R(lW~l+Z.co for
the purpose of acceptability of fle cresttruncation of the thread.
.4
IS 9121:2005
DIAL GUAGE DIAL WAGEPLUNGER PLUNGER
CLAMPING !FORCE GAUGE D
L1
CLAMPINGFORCE
DIAL GAUGEPLUNGER
I II
‘GFACE Y
8.611
L! FACE X
ISETTING DISTANCE PIECE
CLAMPING IFORCE PLAIN TAPER
RING GAUGE F
FIG. 12 GAUGING SET-UPTOCHECKEXTERNMTAPER THREADS ON VALVE STEM
DIAL GAUGE
~eGER~~~~E@E
PLUG GAUGE A PLUG GAUGE B GAUGE CL, L9
A = STANDARD (CONSTANT) DISTANCE PIECE FOR THREE GAUGES(SET THE GAUGING STEP WITH THE DISTANCE PIECE)
FIG. 13 GAUGING SET-UPTOCHECKIN’I%RNALTAPERTHREADSIN CYLINDER NECK
15
IS 9121 :200!5
ANNEX B
(Foreword)
COMMITTEE COMPOSITION
Gas Cylinders Sectional Committee, ME 16
Organization
Department of Explosives, Nagpur
All India Industrial Gases Manufacturers Association, New Delhi
Balmer Lawrie and Co Ltd, Mathura
Bharat Petroleum Corporation Ltd, Mumbai
Bharat Pumps and Compressors Ltd, Allahabad
BOC India Ltd, Kolkata
Everest Kanto Cylinder Ltd, Aurangabad
Everest Kanto Cylinder Ltd, Tarapur
Hindustan Petroleum Corporation Ltd, Mumbai
Indian Oil Corporation Ltd, Mumbai
International Industrial Gases Ltd, Kolkata
J. R. Fabricators Ltd, Mumbai
Kabsons Gas Equipments Ltd, Hyderabad
Kosan Industries Ltd, Mumbai
LPGEquipment Research Centre, Bangalore
Maruti Koatsu Cylinders Ltd, Mumbai
Met Lab Services Pvt Ltd, Mumbai
Min”istry of Defence, Pune
Nagpur Fabriforge Pvt Ltd, Nagpur
National Safety Council, Mumbai
Steel Authority of India Ltd, Delhi
Shri Shakti LPG Ltd, Hyderabad
Tekno Valves, Kolkata
Trans Valves (India) Pvt Ltd, Hyderabad
Vanaz Engineers Pvt Ltd, Pune
In personal capacity (303, Shan/ikunr, AthwaIines, Surat)
in personal capacity (C/o A4enon and Patel, Faridabad)
BiS Directorate General
Representative(s)
SmuA. ANMJNATHAN(Chairman)SHRJC. R. SURENDRANATHAN(Alternate)
SHRJSATtSHKDTCHSR
SHRJS. Dsia (Alternate)SHRIK. GDPJNATHAN
SNJUDIiBASHJSDASS (Alternate)SHRJTHARIYANGEORGE
SHIUS.K. DSY(Alternate)SHRIUnAMKUMAR
Smu S. K. TEWAIU(Alternate)
SHRI P. K. BHATTACHARYA
SW D. MOKEWEE (Alternate)
SHRJAJJTK. PARJKH
Stnu P. M. SAMVATSAR(Alternafe)
SHRJV. K. KHOT
SHRJA. G. KHAMKAR (Afternate)
SHRJP. D.NADKARNr
SIMS D. N. KrUSHNAMURTHY(Alternate)
.%-RIs. s: SAMAhT
SrtEURUESH HAZARMS (Alternate)
SHRJDEVSNDRAK.GARG
SHJUNnGitLSSHK.GARG(Af/ernate)
!ikl s. !kSHKUMAR
SHRI SATtSHKABRA
Smu S. SONJ(Alternate)SmuA. T. AZAVEDD
SHRJD. R. BHAGAUA (Alternate)
SHN G. P. GUPTA
Srrtu S. M. VENUODPAL(A/ternate)SHRJNITJNJ. THAKKAR
St-twA. S. SARAN(Alternate)
%tu s. C. PARIKH
SHRI SUDJURKAUL (Alternate)LT COL MOHAN RAM
SHRJS. K. DAS (Alternate)
SHJUG. L. NEEMA
SHIU H. N. GUPTA
SHIU T. KALYANASUNDAILAM
SHJUN. K. VIJAYARGJA(Afternate)
SHRI J. P. RAMAPPA
SNRJK. V. C. RAO (Alternate)SHRJY. K. BEHANJ
SHRJR. BSHAM (Alternate)
SHJGA. K. JAIN
Smu ANUJ JAIN (Alternate)
SHJUS. K. KHANDEKAR
SHRI S. R. SARWATE(Afternate 1)
SHRI K. P. VISPUTE(Alternate11)SHJUL. D. THAKKAR
SHRI E. M, PATEL
SHRI A. S. BASU, Director & Head (MED)
r-.
[Representing Director General (Er-oficio)]
Member Secretary
SNRJS. B. RoY
Director (MED), BIS
16
IS 9121:2005
Gas Cylinders Valves and Fittings Sub-committee, ME 16:1
Organization
Irrpersonal capacity (303, ShantiktmjAthwalines,Surat)Ashkirr Fabs, Hyderabad
Balmer Lawrie & Co Ltd, Mathurs
Bharat Petroleum Corporation Ltd, Mumbai
Department of Explosives, Nagpur
Directorate General of Technical Development, New Delhi
Everest Kanto Cylinder Ltd, Aursurgabad
Everest Kanto Cylinder Ltd, Tsrapur
Hindustan Petroleum Corporation Ltd, Mumbai
Indian Oil Corporation Ltd, Mumbai
Jagadamba Engineering Pvt Ltd, Secun@abad
Kabsons Gas Equipments Ltd, Hyderabad
Kosan Industries Ltd, Mumbai
LPG Equipment Res@hrchCentre, Barrgalore
Met Lab ServicesPvt Ltd, Mumbai
Nagpur Fabriforge Pvt Ltd, Nagpur
Tekno Valves, Kolkata
Trans Valves (India) Pvt Ltd, Hyderabad
TruthreadGauges& Tools Pvt Ltd, PuneVarraz EngineersPvt Ltd, Pune
Representative(s)
Srnu L. D.THAXKAR(Convener)
Smu M. S. NAOESHWARRAO
Srmr K. GOMNATHAN
Smu DSEIASNISDASS (Al~ernate)SHSUTNAIUVAN GEOROE
SHSUS. K. Dev (Afternate)
SHSUA. ANBUNATHAN
SHSUC. R. SURENDSANATHAN(Alternate)
SNSUM. K. BANERJEE
SHSUAtrT K. PARKH
Smu P. M. SAWATSAR (Alternate)
SHSUV. K. KHOTMu A. G. KtiAMKM(Ahernate)
Smu P.D.NADXASNSHSUD. N. KIUSHNAMIJRrHV(Alternate)
Swra s. s. SAMANT
Smu R+n?sH I-WARMS (Alternate)
SHM V. K. JANAXIRAM
Smu M. VENUOOPAL(Alternate)SmuSATISHKASRA
Srrsr SATVANARAYANSows (Alternate)
Srmt A. T. AZAVEOO
SHRI S, B. BOLMAL (Alternate)
SrmuG. P. -A
Smu S. M. VENUOOPAL(Alterrrate)SHRIS.C.PARIKN
SHIUStromR KAUL (A/lemate)Smt G,L, NsmM
Smr P. C. DUTTA (Alternate)SrutrY. K. BSHAM
SHIUR. Bsrwr (Alternate)SHRIA. K. JAM
Mu Arw Jmr (Alternate)Smr VUAY TAPUSSmuS. K. KHANDSKAS
SrnuS. R. SARWATS(Alternate1)SmuK. P. VISPUTS(Alternate II)
17
Bureau of Indian Standards
BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification of goods andattending to connected matters in the country.
Copyright
BIS has the copyright of all its publications. No part of these publications may be reproduced ifi any formwithout the prior permission in writing of BIS. This does not preclude the fkeeuse, in the course of implementingthe standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating tocopyright 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 reviewedperiodically; a standard along with amendments is reaffirmed when such review indicates that no changes areneeded; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of‘BIS Catalogue’ and ‘Standards: Monthly Additions’.
This Indian Standard has been developed from Dot: No. ME 16 (0682).
Amendments Issued Since Publication
Amend No. Date of Issue Text AfTected
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