prEN ISO 16119-2

• Abstract:

  This part of ISO 16119 specifies requirements and the means for their verification for the design and performance of horizontal boom sprayers, as defined in 3.1, with regard to minimizing the potential risk of environmental contamination during use, including misuse foreseeable by the manufacturer.; It is intended to be used with ISO 16119 1, which gives general requirements common to all the sprayer types covered by ISO 16119. When requirements of this part of ISO 16119 are different from those which are stated in ISO 16119 1, the requirements of this part of ISO 16119 take precedence over the requirements of ISO 16119 1 for machines within the scope of this part of ISO 16119. It does not cover safety aspects (see ISO 4254 6).; • Define and specify requirements for ‘Modules’; • Filling -Total tank extra volume; • Quick coupler for CTS + mandatory provision of inductor hopper or CTS; • Filters drain valve; • Digital level indicator + accuracy; • Boom automatic section control (>24 m) + ISOBUS task controller; • Boom nozzle spacing equal location; • Pump requirements as per ISO 12908: 2020; • Residue concentration only one method for system rinsing; • Direct injection definition, requirements, test method

• Status: Not Published
• Publication Date: 02-Apr-2028
• ICS: 65.060.40 - Plant care equipment
• Technical Committee: CEN/TC 144 - Tractors and machinery for agriculture and forestry
• Drafting Committee: CEN/TC 144/WG 3 - Mobile machines and trailers
• Current Stage: 4020 - Submission to enquiry - Enquiry
• Start Date: 08-Oct-2026
• Completion Date: 08-Oct-2026
• Directive: 2023/1230 - Regulation (EU) 2023/1230 of the European Parliament and of the Council of 14 June 2023 on machinery and repealing Directive 2006/42/EC of the European Parliament and of the Council and Council Directive 73/361/EEC (Text with EEA relevance)
• Mandate: M/605 - COMMISSION IMPLEMENTING DECISION of 20.1.2025 on a standardisation request to the European Committee for Standardization and to the European Committee for Electrotechnical Standardization as regards machinery and related products in support of Regulation (EU) 2023/1230 of the European Parliament and of the Council
• Ref Project: oSIST prEN ISO 16119-2:2026 - Agricultural and forestry machinery - Environmental requirements for sprayers - Part 2: Horizontal boom sprayers (ISO/DIS 16119-2:2026)

• Revises: EN ISO 16119-2:2013 - Agricultural and forestry machinery - Environmental requirements for sprayers - Part 2: Horizontal boom sprayers (ISO 16119-2:2013, Corrected version 2017-03)
• Effective Date: 25-Sep-2024

prEN ISO 16119-2 is a CEN draft European standard for agricultural and forestry machinery. It specifies environmental requirements and verification methods for horizontal boom sprayers, with the aim of reducing the risk of environmental contamination during use, including foreseeable misuse. It is intended for manufacturers, test labs, buyers, and specifiers who need to check whether a sprayer design meets the environmental performance expectations for this machine type.

What does prEN ISO 16119-2 specify?

prEN ISO 16119-2 specifies design and performance requirements for horizontal boom sprayers and the means used to verify them. It focuses on features that affect filling, emptying, spraying, cleaning, drift, and control, because these are the points where product losses and contamination can occur in practice.

The document applies to horizontal boom sprayers as defined in Clause 3. It does not apply to human-mounted horizontal boom sprayers, and it does not cover safety aspects, which are handled by EN ISO 4254-6. The standard is meant to be used together with EN ISO 16119-1, which provides the general requirements common to all sprayer types in the ISO 16119 series. Where this part differs from Part 1, this part takes precedence for machines within its scope.

The document is arranged into:

• Clause 1 Scope
• Clause 2 Normative references
• Clause 3 Terms and definitions
• Clause 4 Requirements
• Clause 5 Verification
• Clause 6 Marking
• Clause 7 Operator’s manual
• Informative Annex ZA on the relationship with Regulation (EU) 2023/1230
• Bibliography

What are the key requirements of prEN ISO 16119-2?

prEN ISO 16119-2 concentrates on the parts of a sprayer that most affect environmental losses: the tank, pump, boom, nozzles, filters, cleaning systems, and control systems. In practice, the standard asks the manufacturer to design the machine so that liquid is contained, measured, distributed, and cleaned up with predictable performance.

Spray tank, filling, emptying, and mixing

Clause 4.1.1 requires tank surfaces to be smooth enough for cleaning, and filling arrangements to prevent liquid returning to the supply and to reduce spillage during filling. The tank must also have enough extra volume above nominal capacity, depending on the filling connection size or the presence of an automatic shut-off valve. For the user, this means the tank should be sized and equipped so that overfilling is less likely and filling operations are easier to manage.

Clause 4.1.1 also requires strainers in the filling opening, controlled filling capacity, and a means for introducing chemical products. Residual liquid after emptying is limited, and the tank must be able to empty cleanly while avoiding contamination of the machine or operator. The tank content indicator, including a digital indicator if used, has to be readable from the driving and filling positions and stay within specified tolerances. Mixing performance is also controlled so that concentration in the tank remains even enough for consistent spraying.

Pump, lines, and boom layout

Clause 4.1.2 requires the pump to provide enough flow for the sprayer’s intended operating range and to keep pressure pulsations within a defined limit. Clause 4.1.3 requires hoses and pipes to be installed without harmful deformation, with quick-acting shut-off devices on pressure lines and pressure ratings that match the circuit. In practice, these requirements help maintain stable application and reduce the risk of hose failure or uneven delivery.

Clause 4.1.4 sets requirements for spray boom section widths, nozzle spacing, boom height adjustment, and response to obstacles. Booms must be able to move out of the way without damage when they contact field obstacles, and larger booms must return automatically to their original position. This matters because boom position directly affects dose uniformity and mechanical durability in field conditions.

Nozzles, filters, and measuring systems

Clause 4.1.5 covers filters on the suction and pressure sides, including access for cleaning with limited spillage. Clause 4.1.6 covers nozzle fixation, drip control after spraying stops, protection of end nozzles on wider booms, and nozzle flow rate tolerance. Clause 4.1.7 requires working pressure, application rate, control setting, and tank contents to be readable from the operator position, and sets accuracy limits for pressure indicators and other measuring systems.

For users and testers, these requirements mean the sprayer must not only deliver liquid, but also show the operator the right information and keep each nozzle close to its intended flow. That is important for dose accuracy, drift control, and repeatable operation.

Volume/hectare adjustment and drift control

Clause 4.2 requires the volume/hectare adjustment system to react consistently when operating conditions change, such as boom sections being switched on or off or travel speed changing. It also limits deviation and variation during repeated adjustment tests. Clause 4.3 requires the sprayer to be designed to reduce drift as far as practicable and to be adjustable so that drift performance meets the stated reference level.

In practice, this section is about keeping the applied dose stable over the field and limiting off-target movement of spray. That is especially important for environmental protection and for meeting the machine’s declared spray performance.

Cleaning, container cleaning, and special sprayer types

Clause 4.4 requires a rinse water tank for most machines, internal cleaning, and an external cleaning connection. It also sets a residue-concentration reduction target after cleaning. Clause 4.5 covers plant protection product container cleaning devices and the transfer of rinse water to the spray tank without spillage. For the user, these requirements reduce leftover product in the machine and help make rinsing safer and more controlled.

Clauses 4.6 and 4.7 add requirements for band sprayers, spray guns, and lances. Clause 4.8 covers module-based sprayers and requires the minimum and maximum system limits to be defined so the modules can be tested as part of a complete field spray system.

What terms does prEN ISO 16119-2 define?

• Horizontal boom sprayer - A machine that applies plant protection products through a boom or in bands, with spray generally directed downward onto or into the target.
• Module - A stand-alone device that is not a sprayer by itself, but becomes one when combined with compatible modules.
• Full spray boom recirculation - A hydraulic arrangement that keeps spray mixture circulating through all boom pipes, even when the nozzles are switched off.
• Semi (ring-line) spray boom recirculation - A hydraulic arrangement that keeps spray mixture circulating through the boom pipes except the end-section segments when section valves are off.

Who uses prEN ISO 16119-2?

prEN ISO 16119-2 is used by sprayer manufacturers, component suppliers, test laboratories, certification bodies, and buyers who specify horizontal boom sprayers. It is also relevant to quality managers and compliance teams who need to check design claims, set up verification tests, or prepare technical documentation.

In practice, it is used for product design, prototype testing, conformity assessment, procurement specifications, and preparing the operator’s manual. It is especially useful where environmental performance, residue control, drift reduction, and measurable application accuracy must be documented.

Which standards are used with prEN ISO 16119-2?

Standard	What it contributes
EN ISO 16119-1	General requirements common to all sprayer types in the series
EN ISO 4254-6	Safety requirements for sprayers and liquid fertilizer distributors
ISO 5681	Vocabulary for crop protection equipment
ISO 5682-1	Test methods for sprayer nozzles
ISO 5682-2	Test methods for horizontal transverse distribution for hydraulic sprayers
ISO 5682-3	Test method for volume/area adjustment systems
ISO 5682-4	Test methods for agitation of sprayer tanks
ISO 9357	Tank nominal volume and filling hole diameter
ISO 12809	Test method for reciprocating positive displacement pumps and centrifugal pumps
ISO 13440	Determination of total residual volume
ISO 21278-1	Test methods for induction hoppers
ISO 21278-2	General requirements and performance limits for induction hoppers
ISO 22368-1	Internal cleaning of complete sprayers
ISO 22368-3	Internal cleaning of tank
ISO 22369-2	Drift classification of field crop sprayers
ISO 22401	Laboratory measurement of spray drift with a test bench
ISO 22856	Laboratory measurement of spray drift in wind tunnels
ISO 22866	Field measurement of spray drift
ISO 4102	Connection threading for sprayers
EN ISO 21920-3	Surface texture specification operators for tank roughness checks

What does the prEN ISO 16119-2 document contain?

The document includes defined verification routes for most requirements, using visual inspection, measurement, or functional testing. Clause 5 summarizes those checks in a verification table, so users can see which requirements are linked to which test method.

It also contains several specific technical aids:

• Table 1 for additional tank volume versus filling connection size
• Table 2 for minimum strainer depth
• Table 3 for pressure indicator accuracy
• Table 4 for the verification method used for each requirement
• Figure 1 for strainer depth and gap measurement
• Figure 2 for the obstacle-contact test for spray booms

Annex ZA links the standard to the essential requirements of Regulation (EU) 2023/1230. This makes the document useful not only for technical design and testing, but also for assessing how the sprayer requirements map to EU machinery conformity needs.

SLOVENSKI STANDARD
01-december-2026
Kmetijski in gozdarski stroji - Okoljevarstvene zahteve za škropilnice - 2. del:
Škropilnice za poljščine (ISO/DIS 16119-2:2026)
Agricultural and forestry machinery - Environmental requirements for sprayers - Part 2:
Horizontal boom sprayers (ISO/DIS 16119-2:2026)
Land- und Forstmaschinen - Umweltanforderungen an Pflanzenschutzgeräte - Teil 2:
Feldspritzgeräte und vergleichbare Geräte (ISO/DIS 16119-2:2026)
Matériel agricole et forestier - Exigences environnementales pour les pulvérisateurs -
Partie 2: Pulvérisateurs à rampe horizontale (ISO/DIS 16119-2:2026)
Ta slovenski standard je istoveten z: prEN ISO 16119-2
ICS:
65.060.40 Oprema za nego rastlin Plant care equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 16119-2
ISO/TC 23/SC 6
Agricultural and forestry
Secretariat: AFNOR
machinery — Environmental
Voting begins on:
requirements for sprayers —
2026-10-06
Part 2:
Voting terminates on:
2026-12-29
Horizontal boom sprayers
Matériel agricole et forestier — Exigences environnementales
pour les pulvérisateurs —
Partie 2: Pulvérisateurs à rampe horizontale
ICS: 65.060.40
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
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USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
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RECIPIENTS OF THIS DRAFT ARE INVITED
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RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 16119-2:2026(en)
DRAFT
ISO/DIS 16119-2:2026(en)
International
Standard
ISO/DIS 16119-2
ISO/TC 23/SC 6
Agricultural and forestry
Secretariat: AFNOR
machinery — Environmental
Voting begins on:
requirements for sprayers —
2026-10-06
Part 2:
Voting terminates on:
2026-12-29
Horizontal boom sprayers
Matériel agricole et forestier — Exigences environnementales
pour les pulvérisateurs —
Partie 2: Pulvérisateurs à rampe horizontale
ICS: 65.060.40
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2026
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
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Published in Switzerland Reference number
ISO/DIS 16119-2:2026(en)
ii
ISO/DIS 16119-2:2026(en)
Contents Page
Introduction .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Requirements . 3
4.1 General .3
4.1.1 Spray tank.3
4.1.2 Pump .5
4.1.3 Lines (hoses and pipes) .5
4.1.4 Spray boom .6
4.1.5 Filter .7
4.1.6 Nozzles .7
4.1.7 Measuring systems .8
4.1.8 Provisions for connecting test equipment .8
4.2 Volume/hectare adjustment system .8
4.2.1 General .8
4.2.2 Measurements .8
4.3 Distribution and control of spray drift .9
4.3.1 Distribution .9
4.3.2 Control of spray drift .9
4.4 Cleaning .10
4.4.1 Rinse water tank .10
4.4.2 Cleaning systems .10
4.5 Plant protection product container cleaning devices .10
4.6 Additional requirements for band sprayers .10
4.6.1 General .10
4.6.2 Nozzles .11
4.6.3 Distribution .11
4.7 Additional requirements for spray guns and lances .11
4.8 Additional requirements for modules .11
4.8.1 General .11
5 Verification .12
6 Marking . .12
7 Operator’s manual . .12
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Regulation (EU) 2023/1230 aimed to be covered . 14
Bibliography .16

iii
ISO/DIS 16119-2:2026(en)
Introduction
The requirements of this part of EN ISO 16119 are based on the test methods given in ISO 5682-2:2017,
which were primarily developed for hydraulic sprayers. For other types of sprayers, other test methods and/
or test criteria may be needed and may be the subject of future investigation and a revision of this part of EN
ISO 16119.
This document is a type C standard as stated in EN ISO 12100.
The machinery concerned and the extent to which hazards, hazardous situations and hazardous events are
covered are indicated in the scope of this document.
When provisions of this type C standard are different from those which are stated in type A or B standards,
the provisions of this type C standard take precedence over the provisions of the other standards, for
machines that have been designed and built according to the provisions of this type C standard.

iv
DRAFT International Standard ISO/DIS 16119-2:2026(en)
Agricultural and forestry machinery — Environmental
requirements for sprayers —
Part 2:
Horizontal boom sprayers
1 Scope
This part of EN ISO 16119 specifies requirements and the means for their verification for the design and
performance of horizontal boom sprayers, as defined in 3.1, with regard to minimizing the potential risk of
environmental contamination during use, including misuse foreseeable by the manufacturer.
It is not applicable to human-mounted horizontal boom sprayers.
It is intended to be used with EN ISO 16119-1, which gives general requirements common to all the sprayer
types covered by EN ISO 16119. When requirements of this part of EN ISO 16119 are different from those
which are stated in EN ISO 16119-1, the requirements of this part of EN ISO 16119 take precedence over the
requirements of EN ISO 16119-1 for machines within the scope of this part of EN ISO 16119. It does not cover
safety aspects (see EN ISO 4254-6).
This part of EN ISO 16119 is not applicable to sprayers manufactured before the date of its publication.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 4102:1984, Equipment for crop protection — Sprayers — Connection threading
EN ISO 4254-6:2020, Agricultural machinery — Safety — Part 6: Sprayers and liquid fertilizer distributors
ISO 5681:2020, Equipment for crop protection — Vocabulary
ISO 5682-1:2017, Equipment for crop protection — Spraying equipment — Part 1: Test methods for sprayer
nozzles
ISO 5682-2:2017, Equipment for crop protection — Spraying equipment — Part 2: Test methods to assess the
horizontal transverse distribution for hydraulic sprayers
ISO 5682-3:2017, Equipment for crop protection — Spraying equipment — Part 3: Test method to assess the
performance of volume/area adjustment systems
ISO 5682-4:2021, Equipment for crop protection — Spraying equipment — Part 4: Test methods for agitation of
sprayer tanks
ISO 9357:1990, Equipment for crop protection — Agricultural sprayers — Tank nominal volume and filling hole
diameter
ISO 12809:2020, Crop protection equipment — Reciprocating positive displacement pumps and centrifugal
pumps — Test method
ISO 13440:1996, Equipment for crop protection — Agricultural sprayers — Determination of the volume of
total residual
ISO/DIS 16119-2:2026(en)
ISO 16119-1:20xx, Agricultural and forestry machinery — Environmental requirements for sprayers — Part 1:
General
ISO 21278-1:2008, Equipment for crop protection — Induction hoppers — Part 1: Test methods
ISO 21278-2:2008, Equipment for crop protection — Induction hoppers — Part 2: General requirements and
performance limits
EN ISO 21920-3:2021, Geometrical product specifications (GPS) — Surface texture: Profile — Part 3:
Specification operators
ISO 22368-1:2004, Crop protection equipment — Test methods for the evaluation of cleaning systems — Part 1:
Internal cleaning of complete sprayers
ISO 22368-3:2003, Crop protection equipment — Test methods for the evaluation of cleaning systems — Part 3:
Internal cleaning of tank
ISO 22369-2:2010, Crop protection equipment — Drift classification of spraying equipment — Part 2:
Classification of field crop sprayers by field measurements
ISO 22401:2015, Equipment for crop protection — Method for measurement of potential spray drift from
horizontal boom sprayers by the use of a test bench
ISO 22856:2008, Equipment for crop protection — Methods for the laboratory measurement of spray drift —
Wind tunnels
ISO 22866:2005, Equipment for crop protection — Methods for field measurement of spray drift
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5681 and the following apply.
3.1
horizontal boom sprayer
machine for spraying plant protection products, along a boom or in bands, with a spray generally directed
downwards onto/into the target
3.2
module
stand-alone device that is not a sprayer on its own, but functions as a sprayer when combined with other
compatible modules
Note 1 to entry: module 1 (application unit - ISO 5681 - 3.2.7.15) and module 2 (pump-tank unit - ISO 5681 - 3.2.5.10)
Allow the separate inspection of modules from different manufactures.
3.3
full spray boom recirculation
a hydraulic system that allows the spray mixture to constantly circulate through all the boom pipes (no-
dead volume) even when the nozzles are turned off
3.4
semi (ring-line) spray boom recirculation
a hydraulic system that allows the spray mixture to constantly circulate through the boom pipes (except
end- section segments) even when the sections valves are turned off

ISO/DIS 16119-2:2026(en)
4 Requirements
4.1 General
4.1.1 Spray tank
4.1.1.1 Surfaces
The depth of roughness, Rz, (see EN ISO 21920-3) of the inner and outer walls of the tank shall be such that
Rz ≤ 100 μm, measured according to EN ISO 21920-3.
4.1.1.2 Filling
Filling devices shall be designed to avoid any return of liquid from the tank to the filling supply.
The filling hole diameter shall comply with ISO 9357. The opening lid shall seal sufficiently to prevent
leakage/spillage when closed.
To prevent spillage as a result of overfilling, the total tank volume shall be:
— at least 5 % more than its nominal volume, or;
— at least 200 L more than its nominal volume when an automatically operated shut-off valve is provided,
or;
— at least volume as given in Table 1 more than its nominal volume, in dependency on the largest tank
filling connection size.
Table 1 — Additional volume to nominal tank volume in dependency on the largest tank filling
connection size
Largest tank filling connection size Additional tank volume [l]
[inch]
1” 10
2” 50
3” 100
4” 200
5“ 350
6” 550
NOTE 1 in = 2,54 cm.
Strainers shall have a minimum depth, d, as given in Table 2 and measured according to Figure 1.
Strainers shall be installed in filling openings and shall have a mesh size less than 2 mm. Any gaps between
the tank filling hole and the strainer shall not exceed 2 mm (see Figure 1).
The filling capacity of the tank with strainer when filled with water shall be at least 100 l/min for tanks with
a nominal volume of 100 l or more. For tanks with a nominal volume of less than 100 l, it shall be possible to
fill the tank within 1 min.
Sprayers shall be equipped with a mean for introducing chemical products , see ISO 4254-6:2020.

ISO/DIS 16119-2:2026(en)
Table 2 — Minimum depth of strainers
a
Nominal tank capacity Minimum depth
C d
l mm
C ≤ 150 60
150 < C ≤ 400 100
400 < C ≤ 600 150
C > 600 250
a
Measured from the upper edge of the strainer down to its bottom.
Dimensions in millimetres
Key
d minimum depth
Figure 1 — Determination of the depth of the strainer and width of gap(s)
4.1.1.3 Emptying
4.1.1.3.1 Residual volume
The volume of total residual as defined in ISO 13440:1996, 2.1 shall not exceed 0,5 % of the nominal tank
volume plus 2 l/m of the boom.
Spray booms with a working width of more than 24 m shall be equipped with system which ensure the semi-
(ring-line) or full circulation (pressure re-circulation) of spray liquid inside the sections and nozzle supply
lines.
The volume of total residual shall be determined in accordance with ISO 13440.

ISO/DIS 16119-2:2026(en)
4.1.1.3.2 Tank emptying device
An emptying device in accordance with EN ISO 4254-6:20xx, 4.5.4 shall allow the complete emptying of
the residual in the tank when the sprayer is in a horizontal position. Complete emptying of the residual is
considered to have been achieved when there are no visible puddles at the bottom of the tank after 5 min
drainage.
It shall be possible to collect the liquid at the outlet without contaminating the environment or equipment
parts (e.g. steps), and without potential risk of exposure of the operator (e.g. using a tap).
The tank outlet shall be guarded against accidental opening.
4.1.1.4 Tank contents indicator(s)
The indication of contents shall correspond to ISO 9357. It shall be durable and easily readable from the
driver's position and from where the tank is filled. Turning of the head and the upper body is acceptable.
The acceptable tolerances of the indication are
— ±15 % for each graduation mark/read-out value for volumes up to 10 % of the nominal tank volume,
— ±7,5 % for each graduation mark/read-out value for volumes from 10 % to 20 % of the nominal tank
volume, and
— ±5 % for each graduation mark/read-out value for volumes above 20 % of the nominal tank volume.
The tolerances shall be measured with a maximum error on measurement of ±1 % with the sprayer in a
horizontal position.
A digital tank level indicator can be used as an alternative to mechanical tank level indicator. The
requirements for indication of contents and tolerances are the same as specified for mechanical tank level
indicators. A nominal tank volume shall be indicated permanently on the tank.
4.1.1.5 Mixing
Tanks shall be designed (e.g. including agitators) to ensure an even concentration of mixture. The maximum
deviation of tank and spraying concentrations, as specified and measured in accordance with ISO 5682-4,
shall not exceed ±15 %.
4.1.2 Pump
The capacity of the pump shall be suited to the needs of the sprayer. The pump shall have sufficient flow
rate capacity to be able to spray within the operating limits specified in the sprayer operator’s manual and
maintaining an even concentration of mixture at level required in 4.1.1.5. The flow rate of pump shall be
measured according to ISO 12908:2020 7.3.2.1. and specified in the operator’s manual (7).
The pump (including air chamber if present) shall not cause pulsations that exceed 5 % of the working
pressure.
Pulsations shall be checked with the nominal rotation speed of the pump, at the location of the sprayer’s
pressure indicator and with the intended working pressure.
4.1.3 Lines (hoses and pipes)
The bending radius of hoses shall be within the limits recommended by the hose manufacturer. Hoses shall
not have any deformation which could disturb the liquid flow.
Pressure lines shall be equipped with quick-acting shut-off devices (e.g. tip-over lever valves).
The maximum working pressure of hoses and the maximum working pressure of connecting devices shall
be at least equal to the maximum working pressure of the circuit. See also EN ISO 16119-1:20xx, Clause 6 e).
...