SIST EN ISO 16330:2004

SLOVENSKI STANDARD
SIST EN ISO 16330:2004
01-september-2004
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Reciprocating positive displacement pumps and pump units - Technical requirements
(ISO 16330:2003)
Oszilierende Verdrängerpumpen - Technische Anforderungen (ISO 16330:2003)
Pompes volumétriques a mouvement alternatif - Prescriptions techniques (ISO
16330:2003)
Ta slovenski standard je istoveten z: EN ISO 16330:2003
ICS:
23.080 ýUSDONH Pumps
SIST EN ISO 16330:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 16330:2004

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SIST EN ISO 16330:2004
EUROPEAN STANDARD
EN ISO 16330
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2003
ICS 23.080
English version
Reciprocating positive displacement pumps and pump units -
Technical requirements (ISO 16330:2003)
Pompes volumétriques à mouvement alternatif - Oszilierende Verdrängerpumpen - Technische
Prescriptions techniques (ISO 16330:2003) Anforderungen (ISO 16330:2003)
This European Standard was approved by CEN on 2 January 2003.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16330:2003 E
worldwide for CEN national Members.

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SIST EN ISO 16330:2004
EN ISO 16330:2003 (E)
Contents
page
Foreword 3
Introduction 4
1 Scope 5
2 Normative references 5
3 Terms and definitions 7
4 Information and requirements to be confirmed, agreed and documented 8
5 Fitness for purpose 8
6 Pump design 9
7 Ancillary equipment 12
8Noise 15
9 Installation and maintenance 15
10 Materials, welding and repairs 15
11 Surface protection 17
12 Nameplates and marking 17
13 Preparation for shipment 17
Annex A 18
(informative) Data sheet 18
Annex B 22
(normative) Optional requirements and items to be agreed 22
Annex C 23
(informative) Operating margins between NPIPA and NPIPR 23
25
Annex D
(informative) Recommended maximum permissible residual pressure pulsations 25
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SIST EN ISO 16330:2004
EN ISO 16330:2003 (E)
Foreword
The document (EN ISO 16330:2003) has been prepared by Technical Committee CEN/TC 197
"Pumps", the secretariat of which is held by AFNOR, in collaboration with Technical Committee
ISO/TC 115 "Pumps".
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by November 2003, and conflicting national standards
shall be withdrawn at the latest by November 2003.
The annexes A, C and D are informative. Annex B is normative.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg,
Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
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SIST EN ISO 16330:2004
EN ISO 16330:2003 (E)
Introduction
This European Standard is applicable to both direct-acting and power pump types. It is applicable to
series production pumps or pump units, limited production pumps or pump units and custom
production pumps and pump units. It specifies all the technical requirements for reciprocating positive
displacement pumps and reciprocating positive displacement pump units with the exception of safety
and testing. Safety and testing of positive displacement pumps and reciprocating positive
displacement pump units are specified in the following European Standards:
EN 809 Pumps and pump units - Common safety requirements.
EN 12162 Liquid pumps - Procedure for hydrostatic testing.
EN 12639 Liquid pumps and pump units- Noise test code - Grades 2 and 3 of accuracy.
prEN 14343 Positive displacement pumps - Performance tests for acceptance.
Users of this European Standard should be aware that further or differing requirements may be
needed for individual applications. This European Standard is not intended to inhibit a supplier from
offering, or the purchaser from accepting, alternative equipment or engineering solutions for the
individual application. This may be particularly applicable where there is innovative or developing
technology. Where an alternative is offered, the supplier should identify any variations from this
European Standard and provide details.
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SIST EN ISO 16330:2004
EN ISO 16330:2003 (E)
1 Scope
This European Standard specifies the technical requirements, other than safety and testing, for
reciprocating positive displacement pumps and pump units. This standard applies to pumps which
utilise reciprocating motion derived from crankshafts and camshafts and also direct-acting fluid driven
pumps.
This European Standard does not apply to reciprocating positive displacement pumps, not pumping
water, where the whole pump is lubricated with the liquid being pumped.
2 Normative references
This European Standard incorporates, by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text, and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this European Standard only when incorporated in it by amendment or revision. For undated
references the latest edition of the publication referred to applies (including amendments).
EN 287-1 Approval testing of welders - Fusion welding - Part 1: Steels (equivalent to
ISO 9606-1).
Approval testing of welders - Fusion welding - Part 2: Aluminium and
EN 287-2
aluminium alloys (equivalent to ISO 9606-2).
EN 288-1 Specification and qualification of welding procedures for metallic materials -
Part 1: General rules for fusion welding (equivalent to ISO 9956-1)
.
EN 288-2 Specification and approval of welding procedures for metallic materials - Part
2: Welding procedure specification for arc welding (equivalent to ISO 9956-2).
EN 288-3 Specification and approval of welding procedures for metallic materials - Part
3: Welding procedure tests for the arc welding of steels (equivalent to ISO
9956-3).
EN 288-4 Specification and approval of welding procedures for metallic materials - Part
4: Welding procedure tests for the arc welding of aluminium and its alloys
(equivalent to ISO 9956-4).
EN 809 Pumps and pump units for liquids - Common safety requirements.
prEN 10226-1 Pipe threads where pressure tight joints are made on the threads – Part 1:
Taper external threads and parallel internal threads - Dimensions, tolerances
and designation.
EN 12639 Liquid pumps and pump units - Noise test code - Grade 2 and grade 3 of
accuracy.
EN 12723:2000 Liquid pumps - General terms for pumps and installations - Definitions,
quantities, letter symbols and units.
Mechanical properties of fasteners - Part 2: Nuts with specified proof load
EN 20898-2
values - Coarse thread (ISO 898-2:1992).
prEN ISO 228-1 Pipe threads where pressure-tight joints are not made on the threads - Part 1:
Dimensions, tolerances and designation (ISO 228-1:2000)
.
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SIST EN ISO 16330:2004
EN ISO 16330:2003 (E)
EN ISO 898-1 Mechanical properties of fasteners made of carbon steel and alloy steel - Part
1: Bolts, screws and studs (ISO 898-1:1999).
EN ISO 9934-1 Non-destructive testing - Magnetic particle testing - Part 1: General principles
(ISO 9934-1:2001).
ISO 14 Straight-sided splines for cylindrical shafts with internal centering -
Dimensions, tolerances and verification.
ISO 1027 Radiographic image quality indicators for non-destructive testing - Principles
and identification.
ISO 2491 Thin parallel keys and their corresponding keyways (Dimensions in
millimetres).
ISO 2492 Thin taper keys with or without gib head and their corresponding keyways
(Dimensions in millimetres).
ISO 3117 Tangential keys and keyways.
Non-destructive testing - Liquid penetrant inspection - Means of verification
ISO 3453 .
Woodruff keys and keyways
ISO 3912 .
ISO 4156 Straight cylindrical involute splines - Metric module, side fit - Generalities,
dimensions and inspection.
ISO 6149-1 Connections for fluid power and general use - Ports and stud ends with
ISO 261 threads and O-ring sealing - Part 1: Ports with O-ring seal in
truncated housing.
ISO 6149-2 Connections for fluid power and general use - Ports and stud ends with
ISO 261 threads and O-ring sealing - Part 2: Heavy duty (S series) stud ends -
Dimensions, design, test methods and requirements.
ISO 6149-3 Connections for fluid power and general use - Ports and stud ends with
ISO 261 threads and O-ring sealing - Part 3: Light duty (L series) stud ends -
Dimensions, design, test methods and requirements.
ISO 6162-1:2002 Hydraulic fluid power – Flange connectors with split or one-piece flange
clamps and metric or inch screws – Part 1: Flange connectors for use at
pressures of 3,5 Mpa (35 bar) to 35 Mpa (350 bar), DN 13 to DN 127.
ISO 6162-2:2002 Hydraulic fluid power – Flange connectors with split or one-piece flange
clamps and metric or inch screws – Part 2 Flange connectors for use at
pressures of 35 Mpa (350 bar) to 40 Mpa (400 bar), DN 13 to DN 51.
ISO 6164 Hydraulic fluid power -- Four-screw, one-piece square-flange connections for
use at pressures of 25 MPa and 40 MPa (250 bar and 400 bar)
ISO 7005-1 Metallic flanges - Part 1: Steel flanges.
ISO 7005-2 Metallic flanges - Part 2: Cast iron flanges.
ISO 7005-3 Metallic flanges - Part 3: Copper alloy and composite flanges.
ISO 10375 Non-destructive testing - Ultrasonic inspection - Characterization of search
unit and sound field.
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SIST EN ISO 16330:2004
EN ISO 16330:2003 (E)
ISO/TR 13593 Enclosed gear drives for industrial applications.
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN 12723:2000 and
the following apply:
3.1
ancillaries
individual components that are mounted on the pump or pump unit including accessories such as
pulsation suppression devices. Auxiliary components not used in the primary operation of the pump or
pump unit are not included
3.2
auxiliaries
individual components that provide an emergency service to cover breakdown of the primary service,
such as an auxiliary generator
3.3
custom production
pumps or pump units that are made specifically to meet a purchaser’s requirements. A custom
production pump unit may contain a series or limited production pump or components. Overall
documentation will be unique to the pump or pump unit
3.4
limited production
pumps or pump units that are made to an established design, in production quantities of less than 10
per batch. A limited production pump unit can contain a series production pump or components
3.5
reciprocating positive displacement power pump
a machine in which liquid is trapped in confined volumes and transported from an inlet connection to
an outlet connection by the reciprocating movement of pistons or plungers. The reciprocating motion
being derived from a rotating shaft
NOTE According to EN 809, pumps are defined as being terminated by their inlet and outlet connections as well as, in
general, by their shaft ends without couplings.
3.6
reciprocating positive displacement direct-acting pump
a machine in which liquid is trapped in confined volumes and transported from an inlet connection to
an outlet connection by the reciprocating movement of pistons or plungers. The reciprocating motion
being provided by a fluid powered piston
3.7
reciprocating positive displacement pump unit
an assembly of a pump and its driver, with necessary transmission and structural supporting elements
terminating at the inlet and outlet connections and at the energy supply to the driver.
An assembly of a direct-acting pump with ancillaries and structural supporting elements terminating at
the pump inlet and outlet connections and at the motive fluid inlet and outlet connections on the motive
cylinder.
A pump unit can include ancillary equipment, such as relief valves or pulsation suppression devices,
when furnished by the supplier and mounted on the pump or pump unit
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SIST EN ISO 16330:2004
EN ISO 16330:2003 (E)
3.8
series production
pumps or pump units that are regularly made to the same specification and in production batches of
not less than 10 at a time. They can be selected and purchased from standard specification sheets
supplied by the supplier. In agreement between the purchaser and supplier a series production pump
can be used as a custom production pump for a specification not covered in the standard specification
sheet
NOTE When the purchaser is familiar with the supplier’s limited production or series production pump or pump units he can
make his own selection from the specification sheet. Data in the specification sheet should be such that it can be validated on
the supplier’s test facilities. Water is the test liquid unless otherwise shown on the specification sheet.
4 Information and requirements to be confirmed, agreed and documented
4.1 Purchaser information
When the supplier is required to make the pump selection, the purchaser shall provide the supplier
with the information necessary for the proper selection of a pump or pump unit. To facilitate this the
data sheet included as annex A may be used. The selection shall consider all received and relevant
information on performance requirements, environment and intended operating conditions. When the
supplier is required to make the pump selection and considers that information necessary for the
pump selection is missing he shall request this from the purchaser. However it is the purchaser’s
responsibility to notify the supplier of all relevant details that may affect pump performance and
longevity.
4.2 Optional items
The purchaser's information shall include the specification of options and items for special agreement
according to this standard and, where applicable, requests for deviations from this standard. Clauses
of this standard referring to options and items for special agreement are listed in annex B
4.3 Supplier’s Information
The supplier shall provide a general arrangement drawing giving at least the following information:
-overall dimensions;
-mounting dimensions;
-shaft dimensions;
-inlet connection dimensions;
-outlet connection dimensions.
The supplier shall also provide a specification sheet, that allows details of the flow rate and pressure
that can be simultaneously obtained at a particular shaft rotational speed together with the power
absorbed to determine, by interpolation, that the purchaser’s requirements can be met.
5 Fitness for purpose
The design and selection of the pump and pump components shall be compatible with the liquid,
motive fluid when appropriate, environment and operating conditions supplied by the purchaser in
accordance with 4.1
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SIST EN ISO 16330:2004
EN ISO 16330:2003 (E)
6 Pump design
6.1 Environmental conditions
Reciprocating positive displacement pumps and pump units shall be capable of operating under the
following nominal conditions:
- minimum air temperature 2 °C;
- maximum air temperature 40 °C;
- maximum relative humidity 80 %.
If environmental or operating conditions (see also annex C), such as those listed below, have been
specified by the purchaser at the time of enquiry, the pump shall be capable of meeting these
requirements subject to agreement between purchaser and supplier:
- ambient temperatures or humidity deviating from the above values;
- exposure to direct sunlight;
- atmospheric pollution including airborne solids;
- biological attack;
- wetting by directed water;
- cleaning by hot water, steam or chemicals;
- external shock or vibration; mechanical or seismic;
- lack of ventilation;
- flooding;
- extended periods of shut-down or storage;
- working out of the horizontal plane;
- marine environment.
6.2 Basic design criteria
6.2.1 Pumps shall be capable of operating either continuously or intermittently with each appropriate
set of parameters supplied by the purchaser in accordance with 4.1.
6.2.2 Consideration shall be given during design or selection to the handling of components and
assemblies when installing, assembling and maintaining the pump or pump unit. Facilities shall be
provided, where necessary, for jacking bolts, extraction screws, locating dowels, spigots and lifting
eyes.
6.2.3 Designs shall conform to the safety requirements of EN 809.
6.2.4 A direct-acting pump shall be capable of performing at rated conditions with all the specified
motive fluid conditions.
6.2.5
The motive power cylinder and valves for direct-acting pumps shall incorporate an over-speed
limiting device to protect the pump in the event of loss of output pressure.
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SIST EN ISO 16330:2004
EN ISO 16330:2003 (E)
6.3 Design of structural and pressure containing parts
The design of the pump and pump unit components shall be suitable for the operating conditions (see
also annex C) and for the environment specified by the purchaser. The combined action of normal
stressing and predicted corrosion shall not result in component failures due to fatigue during the
expected life and at the rated conditions as specified by the supplier.
6.4 Sealing systems
The following components shall be fitted with a suitable seal:
- rotating shafts extending beyond the pump crankcase;
- reciprocating crosshead extensions extending beyond the pump crankcase;
- reciprocating plungers extending beyond the stuffing box;
- reciprocating piston rods extending beyond the stuffing box;
- reciprocating pistons within cylinders.
The seal shall be selected and installed according to the seal manufacturer's recommendations for the
operating conditions.
6.5 Bearing lubrication
6.5.1 If grease lubricated bearings require re-lubrication during the service life of the pump, suitable
means for re-lubrication shall be provided. Full details shall be provided in the maintenance manual.
6.5.2 Lubricated bearings which are not lubricated by the process water shall have an oil reservoir with
a visual oil level indicator. Adding or draining oil shall be accomplished without disassembly other than
drain plugs or filler caps. Full details shall be provided in the maintenance manual.
NOTE Constant level oilers may be used providing the working oil level is clearly marked on the bearing housing.
6.6 Shafts
The shaft dimensions shall be such that the power of the driver can be absorbed in accordance with
the appropriate clauses 6.6.1 to 6.6.6.

6.6.1 Shafts with rectangular or square parallel keys shall conform to ISO 2491.
6.6.2 Shafts with tapered keys shall comply with ISO 2492.
6.6.3 Shafts with parallel or tapered ends for couplings shall have threaded centre bores or other
means shall be provided to ensure proper coupling assembly.
6.6.4 Shafts with tangential keys shall conform to ISO 3117.
6.6.5 Shafts with Woodruff keys shall conform to ISO 3912.
6.6.6 Splined shafts shall conform to ISO 14 or ISO 4156.
6.7 Process inlet and outlet pipe connections
6.7.1 Inlet and outlet connections shall be flanged or threaded and positioned as specified on a
dimensional drawing or in the supplier's literature.
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SIST EN ISO 16330:2004
EN ISO 16330:2003 (E)
NOTE 1 Connection flanges can be studded provided it is not necessary to remove the associated pipework during routine
maintenance.
The type, size and rating of connections shall be as specified in ISO 7005–1 or ISO 7005–2 or ISO
7005–3 and fully detailed on the supplier’s specification including any special surface finishes.
NOTE 2 Other connection specifications can be supplied if agreed between the purchaser and the supplier.
Thread forms for screwed pipe connections shall conform to prEN 10226-1 or prEN ISO 228-1.
NOTE 3 Alternative pipe thread forms can be supplied if agreed between the purchaser and the supplier.
6.7.2 Inlet and outlet connections shall have a design pressure higher than, or equal to, the maximum
allowable operating pressure plus any relief valve accumulation pressure for that connection.
6.7.3 Unless intended for venting to atmosphere during operation tapped auxiliary openings not
connected to pipework shall be fitted with plugs of material at least equivalent in mechanical strength
and corrosion resistance to the component.
6.7.4 Metallic process connections shall be capable of supporting the forces and moments as
specified by the supplier, acting simultaneously, which should not exceed the values indicated in Table
1.
Table 1 - Maximum permissible forces and moments on process connections
Forces Moments
Pipe dia F F M M
(x, y or z) (total) (x, y or z) (total)
Mm max. max. max. max.
N N Nm Nm
25 190 270 85 125
40 255 360 115 170
50 295 420 145 210
80 425 600 215 315
100 505 720 260 385
125 610 870 325 480
150 720 1 020 385 565
200 930 1 320 500 735
250 1 140 1 620 625 920
300 1 355 1 920 740 1 090
350 1 565 2 220 865 1 270
400 1 775 2 520 980 1 445
450 1 980 2 815 1 095 1 615
500 2 200 3 125 1 220 1 795
600 2 625 3 725 1 460 2 145
Threaded connections shall not be subject to moments which tend to tighten or loosen the pipe in the
pump casing.
2 2 2 2 2 2
NOTE 1 F = F + F + F and M = M + M +M
(total ) x y z (total ) x y z
NOTE 2 This means that at no time can the values of F , F and F or M , M and M all be maximum values
x y z x y z
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SIST EN ISO 16330:2004
EN ISO 16330:2003 (E)
6.7.5 The type and rating for motive fluid connections shall be agreed between supplier and
purchaser.
NOTE It is the purchasers' responsibility to ensure motive fluid piping has sufficient flexibility to prevent excess forces and
moments being transmitted to the pump.
Connections for hydraulic and pneumatic power shall conform to ISO 6149-1, ISO 6149-2, ISO 6149-
3, ISO 6162 and ISO 6164.
6.8 Draining and venting
When agreed between purchaser and supplier, methods shall be provided for draining and venting the
pump and shall be shown in the instruction manual.
6.9  Threaded fasteners
Threaded fasteners of carbon steel or alloy steel for pressure containing parts shall conform to EN
ISO 898-1 and EN 20898-2.
Where mating parts such as studs and nuts of materials with galling tendencies are used, they shall
be lubricated with a suitable anti-seizure compound before assembly.
7 Ancillary equipment
7.1 General
Ancillary equipment for the operation of the pump or pump unit shall be clearly indicated by the
supplier including any ancillary equipment that has to be provided by the purchaser. Interface points,
connections, etc. shall be indicated.
Equipment provided by the supplier shall be clearly identified. If assembled with the pump or pump
unit, the applicable general design requirements apply equally to the entire assembly.
7.2 Driver
The power of the driver shall be at least 5 % above the running conditions requiring the most power,
including allowance for relief valve accumulation pressure, to meet the specifications referred to in 4.1.
In addition to the above requirement, the power provided may have to be increased when factors such
as low temperature starting are to be taken into account. The pump supplier shall properly select the
driver when included in the scope of supply.
7.3 Shaft couplings
7.3.1 General
When the pump shaft is directly connected to the shaft of an independently mounted driver, a flexible
shaft coupling shall be used to connect the shafts.
7.3.2 Rating
The type of shaft coupling and its rating shall be selected in accordance with the coupling
manufacturer's recommendations using the power calculated in accordance with 7.2.
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SIST EN ISO 16330:2004
EN ISO 16330:2003 (E)
7.3.3 Selection of shaft coupling
Selection of shaft couplings shall be in accordance with the environmental conditions - see 6.1.
7.3.4 Parallel shaft couplings
When an interference fit is used for mounting couplings on parallel shafts the supplier shall make
provision for removal and replacement of the coupling.
Transitional fit couplings shall be securely locked to the shaft.
7.3.5 Tapered shaft couplings
Taper bored hubs and keys if fitted shall be effectively secured against circumferential and axial
movement relative to the shafts. The supplier when fitting the coupling shall ensure that best contact is
achieved at the large end of the taper. The coupling shall be clamped in position by a positively locked
locking device.
7.4 Baseplates
7.4.1 The baseplate or baseframe shall be made sufficiently rigid to avoid permanent distortion during
transport, if necessary by temporary means, and shall maintain alignment between the pump shaft and
driver shaft during operation when the maximum stipulated forces and moments on the pump inlet and
outlet connections is applied.
NOTE If drain rims or special facilities are required they should be agreed between the purchaser and the supplier.
7.4.2 The baseplate shall incorporate anchorage points.
7.5 Guarding
Guards shall be provided in accordance with EN 809.
7.6 Heating and cooling
7.6.1 Design of heating/cooling passages
All heating and cooling passages shall be designed to operate under the operating conditions specified
by the purchaser in accordance with 4.1.
7.6.2 Connections for heating/cooling
7.6.2.1 Where heating and/or cooling is required to be incorporated in the pump, finished ancillary
connections to the heating and/or cooling chambers shall be provided by the supplier.
7.6.2.2 The specification of additional equipment to be supplied, such as pipework,
isolating/drain/control valves, instrumentation, condition monitoring equipment; shall be subject to
agreement.
7.7 Pressure safety-relief devices
7.7.1 General
NOTE Systems using positive displacement pumps should be fitted with pressure safety-relief devices.
7.7.2 . It shall be capable of passing the maximum flow produced by the pump as installed
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SIST EN ISO 16330:2004
EN ISO 16330:2003 (E)
7.7.3 The maximum pressure safety-relief valve over-pressure shall be the higher of 5 bar or 25 % of
the set pressure, without exceeding the maximum pressure to which the pump has been tested and
not exceeding the power available from the driver.
7.7.3 The name plate shall clearly state the cold test pressure of any internal pressure safety-relief
device. The user shall install an external safety relief device of the correct setting if it is required to
provide a protection to piping or instrumentation that needs a lower pressure limit.
7.8 Pulsation suppression devices
7.8.1 The type of pulsation suppression device supplied shall be agreed between the purchaser and
the supplier.
7.8.2 When inlet and outlet pulsation suppression devices are included in the scope of supply, annex
D can be used as a guide to their selection.
7.8.3
When pulsation suppression devices are supplied loose for mounting in the purchaser's process
pipework the supplier shall provide instructions for the correct installation of the devices. The
installation instructions shall be submitted to the purchaser with the first issue of the pump or pump
unit certified general arrangement drawing.
7.8.4 When pulsation suppression devices are supplied attached to the pump or pump unit the full
extent of process pipework shall be agreed between purchaser and supplier.
7.9 Speed reduction
7.9.1 General
NOTE When speed reduction is integral with the pump design, it is the responsibility of the manufacturer to ensure is of
adequate size.
7.9.2 When speed reduction is necessary between the driver and a power pump the type of reduction
shall be agreed between the purchaser and the supplier.
7.9.3 Belt drives shall not be used in ambient temperatures greater than 65 °C. Belt drive service
factors shall not be less than:
- for multiplex plunger pumps 1,5;
- for duplex double acting piston pumps 1,6;
- for duplex single acting pumps 1,75.
For operation in hazardous areas, belts shall be static conducting.
7.9.4 When belt drives are used they shall be guarded in accordance with 7.5.
7.9.5 Enclosed gear drives between an electric motor and the pump shall conform to
ISO TR 13593. When an app
...