IS 14482: Irrigation Equipment - Polyethylene Micro Tubes for Drip Irrigation

9 Pages·1997·1.1 MB·English

by  Bureau of Indian Standards

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IS 14482 (1997): Irrigation Equipment - Polyethylene Micro
Tubes for Drip Irrigation [FAD 17: Farm Irrigation and
Drainage Systems]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
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“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
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“Knowledge is such a treasure which cannot be stolen”

REAffIRMED~'bOY
IS 14482: 1"7

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Indian Standard
IRRIGATION EQUIPMENT
POLYETHYLENE MICRO TUBES FOR
DRIP IRRIGATION - SPECIFICATION
ICS 23.040.20;65.060.35
CBIS 1997
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAPIADUR SHAH ZAFAR MARO
NEW DElJiI 110002

Price Group 1
AMENDMENT NO.1 APRIL 2007
TO
IS 14482: 1997IRRIGATION EQUIPMENT
POLYETHYLENENUCROTUBES
FORDRIPIRRIGATION
SPECIFICATION
(Page Itclause5.1,Table 1)- Substitutefollowing fortheexisting:
or
Table1DimeDlioDl Micro Tubes
(Clause 5.1)
Andimensionsinmillimetres.
Nominal 10 w.lln~ OuterDIameter
Min Mta Milt Uta
0.9 1.0 1.1 2.9 3.1
1.0 1.0 1.1 3.0 3.2
1.1 1.1 1.2 3.1 3.4
1.2 1.1 1.2 3.2 3.4
D 17)
IrrigationandFarmDrainageEquipmentandSystemsectionalCommittee,FAD54
FOREWORD
This IndianStandardwasadoptedbythe BureauofIndian Standards, after the draft finalized bythe
Irrigationand FarmDrainageEquipmentand SystemSectionalCommittee,had beenapprovedbythe
FoodandAgricultureDivisionCouncil.
Thedripirrigationconceptisfastbecoming popular in India. Inearlier days when indigenous made
emittersordripperswerenotavailable,microtubeswereexclusivelyusedasemissiondevice. Microtube
isthesimplest,cheapestandtheforerunner ofalltypeofemittersordrippers. Itisasmallboreblack
polyethylenetubeandcanbeclassifiedunderlongflowpathemitters. Eventodaymicrotubestillhasits
placedue to its simplicity and lowcost. The biggest advantage beingthe lowpressureoperation as
compared toemitters.
Forthepurposeofdecidingwhetheraparticularrequirementofthisstandardiscompliedwiththefinal
value,observedorcalculated,expressingthe resultofatestoranalysis,shallberoundedoffinaccordance
withIS2: 1960 'Rules for roundingof numericalvalues (revised)'. The numberofsignificant places
retainedintheroundedoffvalue,shouldbe thesameasthatofthespecifiedvalueinthisstandard.
IS 14482:1997
Indian Standard
IRRIGATION EQUIPMENT
POLYETHYLENE MICRO TUBES FOR
DRIP IRRIGATION - SPECIFICATION
1 SCOPE Pm", recommended by the micro tube manufac
turertoensureproperoperation.
This standard prescribes the requirements and
methodsof tests for polyethylene micro tubesof 4 MATERIAL
insidediameter 0.9to 1.2mm for drip irrigation Extrusioncompoundconforming to 4of IS12786
system. shallbeusedforthemanufacturingofmicrotubes.
2 REFERENCES
S DIMENSIONSOF MICROTUBES
Thefollowing standardcontainsprovisionswhich
5.1 Theoutsidediameterandwallthicknessofthe
throughreferencein thistext,constituteprovision
micro tubes shall be as given in Table 1. The
of this standard. At the time of publication,the
nominal inside diameter given in Table 1 is for
editionindicatedwasvalid.Thestandardissubject guidanceonly.
torevisionandpartiestoagreementsbasedonthis
standard are encouraged to investigate the pos 5.1.1 Theoutsidediameterofamicrotubeshallbe
sibilityofapplyingthe mostrecentedition ofthe the average of two measurements taken at 90°
standardindicated. roundthepipe.
ISNo. Title 5.1.2 Theresultingdimensionsshallbeexpressed
tothenearest0.05mm.
12786: 1989 Irrigation equipment
Polyethylene pipe for irrigation
laterals Table1 DimensionsofMicroTubes
(Clause 5.1)
3 DEFINITIONS
Alldimensionsinmillimetres.
For the purpose of this standard, the following
definitionsshallapply. SI NominalOutside Tolerance WallThickness Ncmlnal
No. Diameter onOutside ~ Inside
3.1 PolyethyleneMicroTube Diameter Min Max Diameter
A smallbore blackpolyethylene tube fittedto an (1) (2) (3) (4) (5) (6)
irrigationlateralandintendedtoemitwateratan
i) 3 +0.25 LOS 1.1 0.9
unregulated rates in the form of drops or con ii) 3 +0.25 1.0 1.05 1.0
tinuousflowatemissionratesnotexceeding151/h iii) 3 '+0.25 0.95 1.0 1.1
ata10mwaterheadandonemetrelongmicrotube. iv) 3 +0.25 0.9 0.95 1.2
6 VISUALAPPEARANCE
NOTE- Themicrotubeutilizesalong flowpathfor pres
sure dissipation. The flowratescanbe adjustedbyeither Theinternalandexternalsurfacesofthemicrotube
reducing orextending the length of the micro tube or by
shallbesmooth,cleanandfreefromgroovingsand
changingtheinternaldiameterofthe microtube.
otherdefect. Theendsshallbeclearlycutandshall
3.2 NominalEmissionRate
be square with axis of the pipe. Slight shallow
Emissionratein1/hofthemicrotubeatanominal
longitudinalgrooves or irregularities in the wall
testpressureandwatertemperatureof27_± 2°Cof thickness shall be permissibleprovided the wall
onemetre lengthofmicrotube.
thickness remainswithinthepermissiblelimits.
3.3 NominalTestPressure(Po)
7 TESTSPECIMENSANDCONDITIONS
Referencepressureof 100kPaat the inlet of the
7.1 TestSpecimen
unregulatedmicrotube;or anyother pressureso
Eachspecimenofmicrotubeshallbeofminimum
designatedinthemanufacturer'spublications.
onemetrelength. Testspecimensshallbeselected
3.4 RangeofWorkingPressure at random by the representative of the test
Range of water pressure at the micro tube inlet, laboratoryfrom a batch of at least 100m micro
betweenandincludingtheminimumworkingpres tube. Thetotalnumberoftestspecimensshallbe
sure, PlIlin, and the maximum working pressure, at least25.
IS 14482 : 1997
7.2 l'estConditions 10 SUPPLYOFMICROTUBES
Fortestpurpose,testspecimensshallbeassembled The micro tubes shall be supplied in coils of
ona Polyethylenelateralpipefollowingtherecom nominallengths100mand200 munlessotherwise
mendationsofthemanufacturersastotypeofpipe, agreed tobetween the purchaser and the supplier.
assemblytoolsandconnection.WhenPolyethylene
Eachcoilshallcontain not lessthan one specified
lateralpipeisused,thepipeshallcomplywiththe nominallength.
requirements of IS 12786. The use of grease or
chemicalsthatmayaffectthepropertiesofthepipe 11 MARKING
or the micro tube is prohibited when attaching
microtubesto thepipes. 11.1 Due to miniature sizeofmicro tube,itisnot
possibleto markitsuitably. Therefore, thecoilof
All thetestsshallbecarriedoutatawatertempera microtubeshouldbeplacedinsideaplasticpouch
tureof 27± 2°C. Thewater used shallbe filtered
withfollowinginformation printed on it:
throughafllterwithnominalapertureof180to152
a) Manufacturer's nameor trade-mark,
micron(80to100mesh)orasrecommendedbythe
b) Outside diameter (nominal),
manufacturer.
c) Insidediameter (nominal),
d) Batchnumber,and
8 PERFORMANCESREQUIREMENTS
e) Pipematerial PE25.
Microtubesshallconform to the performance re
quirements asgivenin7.2, 7.3 and 7.4ofIS12786 11.2 DISCertificationMark
exceptthat inthe testprocedure fortensiletestthe
EachpacketmayalsobemarkedwiththeStandard
completesection of the micro tube tobe tested in
Mark.
placeofdumbbell testspecimenasspecifiedin7.3
of IS 12786. 11.2.1 The useofthe Standard Mark isgoverned
bytheprovisionsofBureauofIndianStandardsAct,
9 RESISTANCETO IIYDROSTATIC 1986and the Rules and Regulations made there
PRESSURE under. The details ofconditions under whichthe
licencefortheuseofStandardMarkmaybegranted
9.1 Connect one end of the micro tube pipe
to manufacturers or producers may be obtained
assemblytoasourceofhydraulicpressureandplug
fromthe BureauofIndianStandards.
theother endoftheassembly. Performthe teston
at leastfivesamplesofmicro tubesconnected toa 12 DATATOBE SUPPLIED BYTlIE
lateral. The micro tube shouldbeinserted 10to MANUFACTURER
20rominsidethe lateral.
Themanufacturershallmakeavailabletothe user,
9.2 Carryout the testinthe following twosteps.
together with the micro tube, catalog or informa
a) Test thewater tightnessof theassemblyas tionsheets that includethe followingdata:
follows: a) CatalogNo.ofIrrigation microtube;
Increaseandmaintain the pressureinthree b) Types of pipes suitable for use with the
steps: microtubeand their dimensions;
5 min at 0.4 times maximum working c) Typeofconnection ofmicrotube to pipe;
pressure. d) Minimum and maximum length of micro
then another 5 min at 0.8 times maxi tube;
mumworkingpressure.
e) Achart showingdischargeofmicrotubeat
then 60 min at 1.2 times maximum
variouslengthsatvariouspressureheads;
workingpressure. f) Rangeofworkingpressures;
No leakageshalloccur through the microtube or g) Instruction forcleaningandreplacementof
their connections to the pipe,exceptat the outlet microtube;
ofmicrotubedischarge. h) Instructionofmicrotubeassemblyon pipe;
j) Instructionforpreventingclogginginmicro
b) Immediatelyafter completion of stage (a),
tubes;
raise the pressure to twice the maximum
k) Limitation of micro tube use (fertilizers,
working pressure and maintain for
chemicals, etc);
5minutes.The microtubesshallwithstand
the test pressurewithout sufferingdamage m) Filtrationrequirement; and
andwithout pullingout fromtheassembly. n) Maintenanceandstoragerequirements.

2
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r,
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Amendmentsare issuedtostandardsas theneedariseson'thebasisof comments, Standardsarealsoreviewed
periodically;astandard along with amendments isreaffirmed whensuch review indicates that nochangesare
needed;ifthe review indicatesthatchangesare needed,itistaken up forrevision. Usersof IndianStandards
shouldascertain that theyare inpossession of the latestamendmentsor edition hy referring to thelatestissue
of'BIS Handbook' and 'Standards MonthlyAdditions'.
1b~ IndianStandardbasbeendevelopedfromDoc:No. FAD 54(2OC)).
Amend..-entsIssuedSincePublication
AmendNo. DateofIssue TextAffected
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