IS 9121 (2005): Inspection Gauges for Checking Type 1 ... · 7.2 Master Taper Thread Plug Gauge (Gauge M-EXT), to Check L,(Gauge D) and L,(Gauge E) (see Fig. 11) 8 USAGE OF GAUGES

Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

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


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


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


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



Tolerance on taper in length 9.070 = ~015

Tolerance of lead in length 9.070 = * 0.005

..


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.

--- —


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


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


Taper 1 in 16 on diameter’

Tolerance in length 10.886 +0=-0.023

Right hand thread normal to axis


1.!w2


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



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’).


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



Tolerance on taper in length, L, = + 0.015

Right Hand Thread normal to axis-o


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 ~-~.


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

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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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Documents

IS 9121 (2005): Inspection Gauges for Checking Type 1 ... · 7.2 Master Taper Thread Plug Gauge (Gauge M-EXT), to Check L,(Gauge D) and L,(Gauge E) (see Fig. 11) 8 USAGE OF GAUGES