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

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“Invent a New India Using Knowledge”

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“Step Out From the Old to the New”

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“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 13488 (2008): Irrigation equipment -Emitting pipessystem [FAD 17: Farm Irrigation and Drainage Systems]

May 2008

IS 13488 : 2008

~~-~~

~-~

( q~(11 'T1U~ )

Indian Standard

IRRIGATION EQUIPMENT - EMITTINGPIPE SYSTEMS - SPECIFICATION

( First Revision)

res 65.060.35

C BI52oo8

BUREAU OF INDIAN STANDARDSMANAK BHAVAN. 9 BAHADUR SHAH ZAFAR MARG

NEWDELHI 110002

Price Group 4

Farm Irrigation and Drainage Systems Sectional Committee. FAD 17

FOREWORD

This Indian Standard (First Revision) was adopted by the Bureau of Indian Standards. after the draft finalized bythe Farm Irrigation and Drainage Systems Sectional Committee had been approved by the Food and AgricultureDivision Council.

As the use of emitting pipes in drip irrigation systems is fast becoming popular in the country there is a need forimproving the standards matching with the field requirements. this revised standard is formulated to improve thequality of emitting pipes and to rationalize the specifications on par with other International Standards.

This standard was first issued in 1992 and the first revision is being brought out to incorporate developmentsduring the last 14 years.

The first revision of standard has been taken up:

a) to change the reference for measuring tolerance from outside diameter to inside diameter.b) to revise the pressure classes of emitting pipes.

c) to revise wall thicknesses under each pressure class.

d) to revise the ESCR test temperature and duration.

e) to include non-leakage pressure conditions.f) to incorporate use of 'GO' and 'NO-GO' gauges for measuring inside diameter. and

g) to include emitter exponent criteria for non-regulated emitting pipes.

In the formulation of this standard. assistance has been derived froth ISO 9261 : 2004(E) 'Agricultural irrigationequipment - Emitters and emitting pipe-Specification and test methods' • issued by the International Organizationfor Standardization and ASAE S435 'Polyethylene pipes used for micro-irrigation laterals'. February 2004.issued by the American Society of Agricultural Engineers.

For the purpose of deciding whether a particular requirement of this standard is complied with, the final value.observed or calculated. expressing the result of a test 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 offvalue should be the same as that of the specified value in this standard. .

IS 13488: 2008

Indian Standard

IRRIGATION EQUIPMENT - EMITTINGPIPE SYSTEMS - SPECIFICATION

( First Revision)

13479: 1992

IS No.

12786: 1989

1 SCOPE

This standard specifies the mechanical and functionalrequirements of the emitting pipes and their fittings,test methods and the data to be supplied by themanufacturer to facilitate correct installation andoperation in the field.

NOTE - This standard applies to emitting and trickling pipes.hoses. and tubings intended for irrigation. in which the emittingunits form an integral part. This standard also applies to thefillings used for connecting these pipes. hoses and tubings.This standard does not apply to continuously porous pipe(porous along its entire length and circumference).

2 REFERENCES

The following standards 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 recent editions of the standardsindicated below:

TItle

Polyethylene pipes for irrigationlateralsAssembled joints between fittingsand polyethylene pressure pipes ­Test of resistance to pull out

3 TERMINOLOGY

For the purpose of this standard the following definitionsshall apply.

3.1 Clamping BandIRlng - A ring like or a bandlike device used for tightening the joints betweenemitting pipe and fittings.

3.2 Emitter/Emitting Unit Exponent (m? ­Numerical value that defines the exponentialrelationship between the emission rate and inletpressure of an emitting unit.

3.3 Emitting Pipe - Continuous pipe, hose or tubingwith perforation or other hydraulic devices, formed orintegrated in the pipe, hose or tubing during productionand intended to emit water in the form of drops orcontinuous flow,at nominal emission rates not exceeding8 l/h per emitting unit at nominal test pressure.

3.4 Emitting Unit - A section of emitting pipe,including all its hydraulic devices formed or integratedin the pipe during production and all of the emitterinlets, repeated at intervals from which water is emittedto one clearly distinguishable location.

3.5 Fitting - Any connecting device suitable forattachment to the emitting pipe with or withoutclamping band.

3.6 Inlet Fitting - Fitting having one end suitablefor connection to a standard irrigation lateral orappliance and other end or ends suitable for connectingto an emitting pipe.

3.7 In line Fitting - Fitting with both ends suitablefor connection to an emitting pipe.

3.8 Maximum Working Pressure - Highest waterpressure at the inlet of an emitter/emitting piperecommended by the manufacturer to ensure properfunctioning of the emitter/emitting pipe.

3.9 Minimum Working Pressure - Lowest workingpressure at the inlet of an emitter/emitting unitrecommended by the manufacturer to ensure properfunctioning of the emitter/emitting pipe.

3.10 Nominal Diameter - Conventional numericaldesignation used to indicate the size of the emittingpipe and approximately equal to the outside diameter(in millimetres) of the pipe.

3.11 Nominal Emission Rate (Qn)

3.11.1 Unregulated (Non-pressure Compensating)Emitting Pipe - The emission rate, in litres per hour,of the emitting unit at nominal test pressure and at awater temperature of 27 ± 3°e as specified by themanufacturer.

3.11.2 Regulated (Pressure Compensating) EmittingPipe - The emission rate, in litres per hour. of theemitting unit operating in the range of regulation andat a water temperature of 27 ± 3°e as specified by themanufacturer.

3.12 Nominal Test Pressure (Pn) - A referencepressure of 100 kPa at the inlet of an unregulatedemitting unit, or any other pressure specified in thepublication of the manufacturer as 'nominal testpressure' .

IS 13488 : 2008

4 CLASSIFICATION

4.2 The emitting pipes shall be classified by pressureratings (working pressure) as follows:

4.1.2 Uniformity Category B

Emitting pipes having lower uniformity of emissionrates and greater deviations from the specified nominalemission rate.

4.3 According to type of operation. the emitting pipesshall be classified into the following two classes:

a) Unregulated emitting pipes. and

b) Regulated emitting pipes.

The material used in the manufacture of emitting pipesand their fittings shall be resistant to fertilizers andchemicals commonly employed in irrigation, and shallbe suitable for use with water at temperatures up to60°C and at pressures designed for the emitting pipe.

5.1.1 The materials shall, as far as possible. not supportthe growth of algae and bacteria. The parts of theemitting pipe that are exposed to sunlight. shall beopaque and protected against UV degradation.

5.1.2 The material used in the manufacture of emittingpipes shall comply with all the requirements given in 4of IS 12786.

6 CONSTRUCTIONAL REQUIREMENTS

5.1 Materials

5 MATERIALS OF CONSTRUCTION

6.2 Fittings

6.2.1 The manufacturer shall supply, for each type andsize of emitting pipe, fittings suitable in size and shapeto make good connections to the emitting pipe.

6.2.2 The jointing, made with or without the use ofclamping bands. shall be of sufficient strength towithstand the full range of working pressure.

6.1 Dimensions

6.1.1 Inside Diameter and Wall Thickness

The inside diameters and the wall thicknesses of thepipes shall be as given in Table I.

6.1.1.1 The nominal diameter of a pipe shall be as perdeclaration given by the manufacturer.

6.1.1.2 The wall thickness shall be measured inaccordance with the procedure given in 8.3.1 with adial vernierlball or V-ended micrometer.

6.1.1.3 The resulting dimensions shall be expressed tothe nearest 0.05 mm.

6.1.2 The dimensions of the connecting fittings shallfit the dimensions of the emitting pipe, to ensure easyand reliable connection.

6.1.3 Emitting pipes of same class but of differentinside diameter. made by the same manufacturer. withdifferences of diameter greater than 2 mm, shall bedesignated as different sizes.

6.3 General

The emitting pipe. its parts and fittings, shall have nomanufacturing defects that may impair theirperformance. The construction of the emitting pipe andits fittings shall permit their easy connection, with orwithout clamping bands/rings, whether the connection

Working PressureMPa

0.1000.1250.2500.400

Class IClass 2Class 3Class 4

Class ofPipe

3.15 Regulated (Pressure Compensating) EmittingPipe - Emitting pipe of relatively constant emissionrate at varying water pressure levels at the emittingpipe inlet. within the range of operating pressurespecified by the manufacturer.

3.16 Spacing of EmitterslEmitting Units

Distance between two successive emitters/emittingunits integrated inside the emitting pipe.

3.17 Unit Emitting Pipe - Length of an emitting pipecontaining one emitting unit.

3.18 Unregulated Emitting Pipe - Emitting pipewhose emission rate varies with inlet water pressure.

4.1 Emitting pipe shall be classified according to theiruniformity of emission rate and regulation. into thefollowing two uniformity categories.

4.1.1 Uniformity Category A

Emitting pipe having higher uniformity of emissionrates and smaller deviations from the specified nominalemission rate.

3.13 Range of Working Pressure - The range ofwater pressures at the inlet of the regulated emittingunit. between and including the minimum workingpressure (PMin) and the maximum working pressure(PM••) recommended by the emitting pipe manufacturerto ensure proper functioning.

3.14 Range of Regulation - The range of waterpressure at the inlet of the regulated emitting unit. inwhich each emitting unit of the emitting pipe dischargeswater within the range of emission rates specified bythe manufacturer.

2

IS 13488 : 2008

Table 1 Dimensions of Polyethylene Emitting Pipes(Clauses 6.1.1.8.3.1.1 and 8.3.2.1)

All dimensions in millimetres.

(1) (2) (3) (4)

i) 12 10.50 + 0.20-0.00

ii) 16 14.20 + 0.20-0.00

iii) 20 18.00 + 0.20-0.00

iv) 25 22.60 + 0.20

-0.00

51No.

NominalDiameter

InsideDiameter

Tolerance on LD. Wan Thickness

~r""'"Class 1 Class 2 Class 3 Class 4

O.IOOMPa 0.125 MPa 0.250 MPa 0.400 MPa

(5) (6) (7) (8)

0.4 - 0.5 0.6 - 0.7 0.8 - 1.0 1.1-1.3

0.5 - 0.6 0.7 - 0.9 1.0 - 1.2 1.3-1.5

0.7 - 0.8 0.9 • 1.1 1.2 - 1.4 1.5-1.7

0.9-1.1 1.2 - 1.4 1.5- 1.7 1.8 - 2.2

NOTE - The wall thicknesses of pipes are based on safe working stress of 2.5 MPa at 20"C. Occasional rise in temperature has no deleterious effecton the life and working pressure of the pipe.

Clamping, such as bands and screws, shall be of non-corrosive materials or of materials protected against corrosion.

is made manually or by means of suitable tools suppliedby the manufacturer.

7 TEST SPECIMENS AND TESTINGCONDITIONS

7.1 Test Specimens

Test specimens shall be selected at random by therepresentative of the testing laboratory from a lot of atleast 500 emitting units. The test specimen shall notbe taken from adjacent sections of the pipe. The testspecimen shall include a minimum of five adjacentemitting units and the total number of test specimensshall contain at least 25 emitting units. The number oftest specimens required for each of the tests arespecified in the relevant clauses of this standard.

7.2 Order of Tests

The tests shall be conducted in the order in which theyare listed in 8. test methods and requirements. All tests.beginning with 8.2. shall be conducted on specimens.which were taken according to 7.1.

7.3 Testing Conditions

Unless otherwise specified in the relevant clause. alltests shall be performed at ambient temperature and atwater temperature of 27 ± 3°C. The water used shallbe filtered through a filter with nominal aperture of7 5 ~ to 100 ~ (160 mesh to 200 mesh) or asrecommended by the manufacturer.

7.4 Accuracy of Measuring Devices

7.4.1 The error. if any. in the measurement of waterpressure shall not exceed 2 percent of the actual values.

7.4.2 During the test. the pressure shall not vary bymore than 2 percent.

7.4.3 The error if any. in the measurement ofthe emission rate of the emitting pipe shall not exceed± 2 percent of the actual values.

8 TEST METHODS AND REQUIREMENTS

8.1 Uniformity of Emission Rate

8.1.1 This test applies to regulated as well as tounregulated emitting pipe. The test sample shall includeat least 25 emitting units in accordance with thatspecified in 7.1.

8.1.2 Unregulated Emitting Pipes

Measure the emission rates of the emitting units in theemitting pipes. when the water pressure at the inlets ofthe emitting units equals the nominal test pressure.Record separately the measured emission rate of eachemitting outlet.

Calculate the coefficient of variation. Cv• from thefollowing formula:

sC. -e --:Lx 100

"if

where

Sq = standard deviation of the emission rates forthe sample, and

q = mean emission rate of sample.

NOTE - For the purpose of measuring emission rate, collecta water sample from each emitting unit for 5 min and calculatethe emission rate for each outlet.

IS 13488: 2008

8.1.2.1The meanemissionrate of the test sampleshallnotdeviate fromthenominalemissionrate(qn)bymorethan 5 percent for Category A, or not more than 10percentfor Category B in accordance withTable 2.

Table 2 Uniformity Values[Clauses 8.1.2.1 and l Itd)]

SI Cateaory Devlatloa or q Coefllcleat orNo. f'romq.,Mex Varlatloa, C.

(I) (2) (3) (4)

i) A S Sii) B 10 10

8.1.2.2Thecoefficientof variation (C) of theemissionrate of the test sample shall not exceed 5 percent forCategoryA, or 10 percent for Category B.

8.1.3 Regulated Emitting Pipes

Condition the emitting units in the test sample byoperating them for one hour minimumat an emittingunit with inlet pressure equal to the pressure at themiddleof the workingpressurerange.At thebeginningof conditioning, the emitting units shall be operatedthree times at about PMu and three times at about PMineach operation to be maintained for at least threeminutes. During the last 10 min of conditioning, thepressure shall be maintained at the midpoint of therange of regulation. Immediately after, and withoutaltering the inlet pressure, test the emitting unitsaccording to 8.1.2 but at the midpoint of the range ofregulation.

8.1.3.1 The emitting units shall comply with therequirements given in 8.1.2.1 and 8.1.2.2.

8.2 Emission Rate of Emitting Unit as a Function ofInlet Pressure

Numberthe emitting units tested according to 7,1, inascending order according to the measured emissionrate. (No. I shallbe givento the emittingunitof lowestemission rateandNo.25 to theemittingunitsof highestemissionrate). Select4 emitting units from the seriesobtained, No.3, 12, 13,23 and measure their changeinemissionrateas a functionof the inletpressure.Testeach emitting unit in steps not greater than 50 kPa,fromPMin Up to 1.2PMu' Regulated emittingunitsshallbe tested at three or more different pressures withinthe range of regulation, at rising and falling inletpressure. The reading of the results shall be taken atleast three minutesafter arrivingat the testpressure. Ifthe inletpressureexceedsthedesiredpressureby morethan 10kPaduring its rise and fall, return to •PMin' andrepeat the test.

8.2.1 Unregu/Qt~d Emining Pipe

Calculateforeach pressurevalue,the averageemission

4

rate q obtained by measuring the emission rate of thefour emitting units at rising pressure.

Plot the curve q as function of inlet pressure.

8.2.1.1 The curve of q shall conform to the curvepresentedin the publicationof the manufacturer withinan allowabledeviationof not more than±5 percentforCategoryA and ±1O percent for Category B.

8.2.2 Regulated Emitting Pipes

Calculatefor each inlet pressure value,Pi' the averageemission rate q obtained by measuring the emissionrate of the four emitting units at rising and fallingpressure(the averageof8 emissionratemeasurement).

8.2.2.1 The value of q shall not deviate from thenominal emission rate by more than 5 percent forCategoryAor notmorethan 10percentforCategory B.

8.3 Dimensions

8.3.1 Wall Thickness ofEmitting Pipe

Measurethewall thicknessof the emittingpipeat fourpoints equally spaced on the periphery of the pipe.Repeat the test at two cross sections. In the eventof apart the pipewallbeingthickerby design(forexample,flap in emitting pipe), such increase in thicknessshallbe disregarded.

8.3.1.1 The wall thickness of the emitting pipe, whenmeasured at each of the four points, shall be withinlimits given in Table 1 (see 6.1.1).

8.3.2 Inside Diameter ofEmitting Pipe

For measuring the inside diameter of emitting pipe,insert into the end of the pipe a specific taper gauge(with2°apexangle)or 'Go', 'No-Go' guage,firstenterGO side of the guage, it should go inside the tubewithout much force but at the same time it should notremain loose in the tube. For example a GO, NO-GOguage sketch is given at Fig. 1 for 16 mm nominaldiameter tube.Alternatively the outsidediametermaybe measured with pie tape or vernier caliper, fromwhichtwo timesthe averagethicknessmeasuredat thesamepointof pipe can be deducted to obtainthe insidediameter.

No Go 14.40mm dia

14.30mmdia

r.,.....,...JC.::--- 14.20mmdia

FlO. 1 A TYPICAL EXAMPLB OfGo-No Go GAUOB fOR

16 mm NOMINAL DIA

8.3.2.1 The measured inside diameter shall be withinthe limits given in Table 1 (s~~ 6.1.1).

8.3.3 Flow Paths in Emitting Unit

Measurein at least three emitting units, accurately tothenearest 0.02mmandundernopressure, thesmallestdimension of the flow path (this does not apply todimension that varies with pressure).

8.3.3.1 The smallest measured flow path dimensionshall not be smaller than the dimensions declared bythe manufacturer.

8.3.4 Spacing ofEmitter Units

Measure three spacings of emitting units, accuratelyto the nearest 1.0 mm.

8.3.4.1 The spacing of the emitting units shall notdeviate by more than 5 percent from the spacingsdeclared by the manufacturer.

8.4 Resistance of Emitting Pipes to HydrostaticPressure

8.4.1 Resistance to Hydrostatic Pressure at AmbientTemperature

Performthe teston a lengthof emittingpipeconsistingof five unit emitting pipes joined by means of centrefittings.

Perform this testin twostages(see 8.4.1.1 and8.4.1.2).

8.4.1.1Connecttheemittingpipe assemblyto a sourceof water, bymeansof an inlet fitting, andcloseitsoutletend. Fill the emitting pipe assembly with water andcheck that no air remains trappedin the pipe. Increasethe water pressure gradually (lOs, Min) to themaximum working pressure multiplied by 1.8 andmaintain the test pressure for I h.

The emitting pipe assembly shall withstand the testpressure without showing signs of damage to theemitting pipe, the emitting units or the connectingfittings. The unit emitting pipes shall not pull apart,andno leakageshalloccur at the inletfitting. Leakagesnot exceeding the emission rate of one emitting unitare permissible at centre fittings.

8.4.1.2 Reduce the test pressure to nominal pressureand maintain for at least 3 min. Measure the flow rateof each emitting unit.

The flow rate of each emitting unit shall not deviateby more than 10 percent from its initially observedflow rate, as measured in 8.1.

8.4.2 Resistance to Hydrostatic Pressure at ElevatedTemperature

Perform the teston a lengthof emitting pipeconsistingof3emitting-pipe units jointedbymeans ofcenter fittings.

Performthe test in twostages (see 8.4.2.1 and8.4.2.2).

IS 13488 : 2008

8.4.2.1Connecttheemitting-pipe assembly toa sourceof water, by means of an inletfitting, andcloseitsoutletend. Fill the emitting-pipe assembly with water andcheck that no air remains trapped in the pipe. Raisethe water pressure gradually (10 s, Min) to maximumpressureand maintain the pressure for 48 h, while theemitting-pipe test assembly is immersed in water at60:1: 2°C temperature.

The emitting pipe shall withstand the test pressurewithout showing signs of damage.

8.4.2.2 Remove the test assembly from the water andmaintain it for 30 min at ambient temperature. Applya hydrostatic pressure Pn for at least 3 min at ambienttemperature andmeasuretheflowrateof eachemittingunit.

The flow rate of each emitting unit shall not deviateby more than 10percent from its originalflowrate, asmeasured in 8.1.

8.S Resistance to Tension at Elevated Temperature

Perform the teston 5 unitemitting pipeat a temperatureof 50:1: 2°C.

NOTE- Mark on the unit emitting pipe two lines about 150mm apart. Fasten one end of the emitting pipe in an aircirculation oven maintained at 50 :t 2"C and apply a deadweight in accordance with Table 3. Maintain the pull for 15min. then remove the pull and cool the unit emitting pipe to anambient temperature.

8.5.1Emittingpipeshallwithstand thetestpullwithoutbreakingor tearing.The nominal flow rate in the testspecimen shall not vary by more than 5 percentfromtheflowrate measured before testingaccording to 8.1,and the distance between the two marked lines shallnot vary by more than 5 percent from the distancemeasured (see 8.5).

8.6 Resistance to Pull Out of Joints Between Fittingand Emitting

This test shall be performed in accordance withIS 13479, but the test pull out load shall be accordingtoTable3, appliedfor I h or alternatively dead weightmay be used for applying the test pull.

The fitting shall not pull out from the emittingpipe.

8.7 Resistance of PE Emitting Pipe toEnvironmental Stress Cracking

8.7.1 Acceptance Test

The test procedure shall conform to the proceduredescribed in Annex D of IS 12786, except for thefollowing:

Condition the test specimen in an air circulatingoven at 80:1: lOC for 1 h. Then air cool and U bend

= Ih

IS 13488: 2008

Table 3 'lest PuDOut Load tor Each Pipe SIRIClass PuDOut Test load, In Newtons (K)

(Clauses 8.5 and 8.6)

SI Nom".1 Minimum C.... I C.... l C.... 3 CIa.. 4No. Size lude (0.100 (0.1%5 (use (0.400

Diameter Mpa) Mpa) Mpa) Mpa)

d

nun nun (KN) (KN) (KN) (KN)(I) (2) (3) (4) (5) (6) (7)

i) 12 10.50 SO 75 105 ISOii) 16 14.20 85 120 175 235iii) 20 \8.00 150 200 270 340iv) 25 22.60 .245 335 425 5\0

thespecimen andimmersein a constanttemperaturebath. containing the reagent.

Percentage concentration = 10 percentof surface active agent

Test temperature = 77 ± 3°C

Testduration

8.7.2 Type Test

The test procedure shall confirm to the proceduredescribed in Annex D of IS 12786.except for the testtemperature and test duration which shall be asspecified below:

Percentage concentration = 10 percentof surfaceactiveagent

Test temperature = 77 ± 3°C

Testduration = 48 h

8.8 Determination of Emitting Unit Exponent (ThisTest Applies to Both Regulated and UnregulatedEmitting Units)

The relationbetweenthe emission rate. q . in lJhandthe inletpressurein an emitting unit.P. in kilopascals,is givenby the formula:

q=k.p'"

I(logp.)(log ~)-I/n (I logPI)(I log ql)m = 2 2

I(log p.) (I log PI)where

q = emission rate. in lib;

k = constant;

p = inlet pressure. in KPa;

m = emitting unit exponent;

= 1.2.3.4.......... n; and

6

n = number of pressure values used in 8.2.2.

Usingall theq andp valuesobtainedin8.2.2.calculatem from the above formula.

The valueof the emittingunit exponentm shallbe lessthan0.5 for non-regulated emittingpipesandless than0.2 for regulatedemitting pipes.

9 DESIGNATION

9.1 Non-regulated Emitting Pipe

Emitting pipes shall be designated by the wordsemitting pipe. the reference to this Indian Standard.nominal outside diameter. nominal emission rate (inlitres per hour). class of pipe. emitter spacing and theuniformitycategory.

Example:Emitting pipe IS 13488 16-2-1-x-A designates aemittingpipecomplyingwith this IndianStandard.of 16mm nominaloutside diameter.2lJh emissionrate. with working pressure 0.100 Mpa (class I).emitter spacing. non-regulated and confirming touniformityCategoryA.

9.2 Regulated Emitting Pipe

Emitting pipes shall be designated by the wordsemitting pipe. the reference to this Indian Standard.nominal outside diameter. nominal emission rate (inlJh). class of pipe. emitter spacing. symbol 'PC' toindicate use of regulated emitters and the uniformitycategory.

Example:Emitting pipe IS 13488 16-2-1-x-PC-A designatesa emitting pipecomplying withthisIndianStandard.of 16nunnominaloutside diameter.2lJh emissionrate. with working pressure 0.100 Mpa (class 1).emitter spacing. regulated(pressure compensated)and confirming to uniformity CategoryA.

10 MARKING AND PACKING

10.1 Eachemittingpipeshallbearclearandpermanentmarkings. indicating the following particulars:

a) Nameof manufacturer or his registered trade-mark.

b) Yearof manufacture.c) Batch or Code No.•d) Designationin accordance with 9.1. ande) Arrow indicating direction of flow (if flow

direction affects operation of emittingpipe).

NOTE - 'The above panlculara shall be marked at intervalsnot exceeding5 m.

10.2 DIS Standard Marking

The product may also be marked with the StandardMark.

10.2.1 The use of the Standard Mark is governed bythe provisions of the Bureau ofIndian Standards Act,1986 and the Rules and Regulations made thereunder.The details of conditions under which the licence forthe use of Standard Mark may be granted tomanufacturers or producers may be obtained from theBureau of Indian Standards.

10.3 Fittings

Emitting-pipe fittings shall bear clear and permanentmarkings, including the following particulars:

a) Registered trade-mark, and

b) Size.

10.4 Packing of Emitting Pipe

When the emitting pipes are supplied in coils, eachcoil shall carry an attached tag bearing the followinginformation in clear, legible and permanent writing:

a) Name and address of manufacturer;

b) Designation and catalogue number of emittingpipe;

c) Nominal outside diameter of emitting pipe;

d) Classification according to 4.1, 4.2 and 4.3;

e) Length of emitting pipe in coil;

f) Year of production and manufacturing lot;

g) Nominal emission rate of unit emitting pipeand nominal pressure; and

h) Spacing of emitting units.

11 DATA TO DE SUPPLIED BY THEMANUFACTURER WHENEVER ASKED FOR

The manufacturer shall make available to the user,together with the emitting pipe and fittings, cataloguesor information sheets that include the following data:

7

IS 13488: 2l

a) Catalogue number of emitting pipe and fitti

b) Type of fittings for connecting emitting pto supply network or appliances;

c) Instruction sheet for proper operationemitting pipe (the instruction sheets shalldated);

d) The words 'Uniformity Category A''Uniformity Category B' as applicalincluding the relevant values given in Tabl

e) Emitter unit exponent as detailed in 8.8;

f) Details of suitable fittings (including CI

number as marked on the fitting) for differapplications;

g) Installation instructions for the emitting ~

and fittings;

h) Nominal emission rate of unit emitting pi

j) Inside diameter of emitting pipe;

k) Wall thickness of emitting pipe;

m) Range of working pressure of the emiupipe;

n) Classification of emitting pipe;

p) Operating characteristics of emitting p(8.2);

q) Limitations of emitting pipe use (fertilizchemicals, etc);

r) Range of regulation, if any;

s) Filtration requirements;

t) Spacing of emitting unit in emitting pipe

u) Minimum recommended radius for coilemitting pipe;

v) Maintenance and storage requirements;

w) Nominal test pressure;

x) Dimensionof smallestflowpathinemittingl

y) Operating characteristics of regulated eminunits value of emitting units exponeaccording to 8.8.1; and

z) The length of the emitting pipes in each r

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 goodsand 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 formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course ofimplementing 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 oflndian 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 Doc: No. FAD 17 (1687).

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

BUREAU OF INDIAN STANDARDS

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Telegrams: Manaksanstha(Common to all offices)

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{2323 761723233841

{23378499,2337856123378626,23379120

{60 3843609285

{22541216,225414422254 2519, 2254 2315

Manakalaya, E9 MIDC, Marol, Andheri (East) { 2832 9295, 2832 7858MUMBAI 400 093 28327891,28327892

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