7,000 km / month

Drip Lateral Systems

Inline drip lateral to IS 13488:2008 — 12, 16, 20 and 25 mm across four pressure classes, produced at 200 metres a minute, delivering water where the crop actually needs it.

Sizes12, 16, 20, 25 mm

Output7,000 km a month

StandardIS 13488:2008

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Drip lateral coils in the store

More crop per drop.

Drip lateral is the highest-volume product on the campus by length. At 200 metres a minute the line turns out roughly 7,000 kilometres a month, most of it going into field irrigation across northern India.

The engineering that matters in drip is unglamorous: consistent dripper spacing, uniform discharge along the run, and wall thickness that survives being laid, lifted and relaid across seasons. Those are extrusion-control problems, and they are the same ones we solved for cable.

General

Parameter	Specification
Product	Inline emitting pipe (drip lateral)
Standard	IS 13488:2008, aligned to ISO 9261:2004
Nominal diameters	12, 16, 20 and 25 mm
Pressure classes	Class 1 (0.100 MPa), Class 2 (0.125 MPa), Class 3 (0.250 MPa), Class 4 (0.400 MPa)
Production rate	200 metres per minute
Monthly capacity	Approximately 7,000 km
Dripper spacing	Standard ladder from 15 cm to 150 cm — specify
Nominal discharge	0.8, 1.2, 1.6, 2.0 and 4.0 litres per hour at 1 bar — specify

Performance

Parameter	Specification
Uniformity category	Category A (±5%, CV ≤ 5%) or Category B (±10%, CV ≤ 10%)
Emitter type	Inline, unregulated (non pressure-compensating) or regulated (pressure-compensating)
Emitter flow exponent	Below 0.3 for unregulated; below 0.2 for pressure-compensating
Nominal test pressure	100 kPa (1 bar)
Filtration required	75 to 100 micron — that is 160 to 200 mesh
Marking	Flow direction arrows at intervals not exceeding 5 metres, per IS 13488 cl. 10
Coil lengths	On enquiry — standard coil lengths on enquiry

Reference data — what the standards requireTables from the Indian Standard, for checking any quotation against it

Dimensions and pressure classes

Inside diameter and wall thickness by class — IS 13488:2008 Table 1

Nominal OD mm	Inside diameter mm	Class 1 0.100 MPa	Class 2 0.125 MPa	Class 3 0.250 MPa	Class 4 0.400 MPa
12	10.50 ± 0.20	0.4 – 0.5	0.6 – 0.7	0.8 – 1.0	1.1 – 1.3
16	14.20 ± 0.20	0.5 – 0.6	0.7 – 0.9	1.0 – 1.2	1.3 – 1.5
20	18.00 ± 0.20	0.7 – 0.8	0.9 – 1.1	1.2 – 1.4	1.5 – 1.7
25	22.60 ± 0.20	0.9 – 1.1	1.2 – 1.4	1.5 – 1.7	1.8 – 2.2

Wall thickness in millimetres. Note that IS 13488 fixes the inside diameter and derives the outside diameter — the opposite convention from IS 4984 for HDPE pipe. Getting this the wrong way round is a common error on specification sheets.

Uniformity categories

Uniformity categories — IS 13488:2008 and IS 13487

Category	Mean deviation from nominal discharge	Coefficient of manufacturing variation
Category A	± 5%	≤ 5%
Category B	± 10%	≤ 10%

This is the number that decides whether the far end of a run gets the same water as the near end. Ask any supplier for the category and the measured CV, not for an adjective.

Standard and optional fittingsWhat is supplied as standard, and what is available to order

System components

Supplied alongside

Inline drip lateral in all four classes
HDPE mains and sub-mains
Mini sprinkler systems
Fittings, connectors and end caps
Filtration to 75–100 micron as the standard requires
Design support for field layout

Why drip

Against flood irrigation

Water delivered to the root zone, not the field surface
Sharp reduction in evaporation and runoff losses
More uniform application across undulating ground
Fertigation possible through the same network
Lower pumping energy per irrigated hectare
Eligible under state and central micro-irrigation subsidy schemes

Standards we manufacture and test to

Standard	Scope
IS 13488:2008	Irrigation equipment — emitting pipe systems, aligned to ISO 9261:2004
IS 13487	Irrigation equipment — emitters, for emission rates up to 15 litres per hour
IS 13479	Irrigation equipment — pull-out resistance of mechanical joint fittings
IS 12786	PVC pipes for irrigation — referenced for environmental stress cracking
ISO 9261:2004	Agricultural irrigation equipment — emitters and emitting pipe

Routine and type testsPerformed on every unit, and available on request

Routine tests

Performed on every unit

Uniformity of emission rate at nominal pressure
Emission rate against inlet pressure on four emitting units
Wall thickness and inside diameter against IS 13488 Table 1
Hydrostatic pressure resistance at ambient and at 60 °C
Tension resistance at 50 °C
Pull-out resistance at fittings — IS 13479
Environmental stress cracking — IS 12786 Annex D
Emitting unit flow exponent

Third-party inspection

Purchaser and third-party pre-dispatch inspection is accommodated on request, including for export consignments. Type-test certificates are issued from CPRI, ERDA or NABL-accredited laboratories — copies available on request.

Inside the works

In the field.

Laterals laid across cropped beds, running at design discharge.

Walk the whole works

Applications

Where it goes to work.

Field crops

Row crops

Cotton, sugarcane, maize and vegetable production.

Horticulture

Orchards

Fruit and plantation crops on wide spacing.

Protected

Greenhouse

Polyhouse and shade-net cultivation.

Scheme

Micro-irrigation programmes

Supply under state and central subsidy schemes.

What filtration does drip lateral need?

IS 13487 requires a filter of nominal aperture 75 to 100 micron — that is 160 to 200 mesh. Note this is tighter than the 120-mesh figure often quoted in the market. Under-filtering is the single most common cause of dripper blockage.

What is the difference between pressure-compensating and non-compensating drippers?

A pressure-compensating dripper holds a near-constant discharge across a stated pressure range; a non-compensating one does not, so discharge falls along the run and on slopes. The technical discriminator is the flow exponent — below 0.2 for pressure-compensating, below 0.3 for unregulated.

Which dripper spacing should I choose?

It follows the crop and the soil. Close spacing of 30 to 40 cm for row crops on light soil; wider spacing of 60 cm and above for orchards and heavier soils. Tell us the crop, row spacing and soil type and we will recommend.

What is CVm and why does it matter?

The coefficient of manufacturing variation — how consistent the drippers are from one to the next. IS 13488 Category A requires 5% or better. It determines whether the last plant on a run gets the same water as the first, and it is the number most suppliers avoid publishing.

Often supplied together