1、BRITISH STANDARD BS EN 734:1995 Side channel pumps PN40 Nominaldutypoint, main dimensions, designation system The European Standard EN 734:1995 has the status of a British Standard ICS 23.080BSEN734:1995 This British Standard, having been prepared under the directionof the Engineering SectorBoard, w
2、aspublished under the authorityof the Standards Board and comes intoeffect on 15December1995 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference MCE/6 Draft for comment 92/7555DC ISBN 0 580 24766 X Committees responsible for this British Standard The pre
3、paration of this British Standard was entrusted to Technical Committee MCE/6, Pumps and pump testing, upon which the following bodies were represented: British Chemical Engineering Contractors Association British Hydromechanics Research Association British Pump Manufacturers Association Department o
4、f Trade and Industry (National Engineering Laboratory) Electricity Association Energy Industries Council UK Offshore Operators Association Limited Water Services Association of England and Wales The following bodies were also represented in the drafting of the standard, through subcommittees and pan
5、els: Engineering Equipment and Materials Users Association Process Plant Association South West Water Authority Amendments issued since publication Amd. No. Date CommentsBSEN734:1995 BSI 11-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 734
6、3BSEN734:1995 ii BSI 11-1999 National foreword This British Standard has been prepared by Technical Committee MCE/6 and is the English language version of EN734:1995 Side channel pumps PN40 Nominal duty point, main dimensions, designation system, published by the European Committee for Standardizati
7、on (CEN), in the development of which the UK has played an active part. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer im
8、munity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to4 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amend
9、ment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 734 April 1995 ICS 23.080 Descriptors: Pumps, designation, dimensions, performance evaluation, pressure tests, hydrostatic pressure English version Side channel pumps PN 40 Nominal duty point, main dimensions,
10、designation system Pompes canal latralPN40 Point de fonctionnement nominal, dimensions principales, systme de dsignation SeitenkanalpumpenPN40 Nennleistung, Hauptmae, Bezeichunungssystem This European Standard was approved by CEN on1994-10-03. CEN members are bound to comply with the CEN/CENELEC Int
11、ernal 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 Central Secretariat or to any CEN memb
12、er. 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 Central Secretariat has the same status as the official versions. CEN members
13、 are the national bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr
14、 Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members. Ref. No. EN734:1995EEN734:1995 BSI 11-1999 2 Foreword This European Standard has been prepared by SC4, Ro
15、todynamic pumps, of CEN/TC197, Pumps, the Secretariat of which is held by DIN, based on a proposal document, CEN/TC197/SC4N21, submitted by the European Committee of Pump Manufacturers (EUROPUMP) in December1990, and was adopted for CEN enquiry at the CEN/TC197/SC4 meeting on1991-03-14 in Frankfurt.
16、 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 October1995, and conflicting national standards shall be withdrawn at the latest by October1995. In accordance with the CEN/CENELEC Internal Regula
17、tions, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Defin
18、ition 3 3 Nominal duty point and main dimensions 3 4 Hydrostatic pressure test 3 5 Designation 3 Figure 1 Main dimensions 3 Table 1 Nominal duty point and main dimensions 4EN734:1995 BSI 11-1999 3 1 Scope This European Standard specifies the designations, nominal duty point and main dimensions of he
19、avy duty side channel pumps with a nominal pressure of40bar. NOTEDepending on special circumstances, e.g.temperature, materials, sealing of the shaft etc., excess operating pressure need not attain the value of the nominal pressure under any circumstances. 2 Definition For the purposes of this stand
20、ard, the following definition applies. 2.1 side channel pumps liquid pumps which evacuate the inlet pipe and thereby automatically draw in the liquid to be pumped without the aid of ancillary equipment. They must be able to pump a liquid gas mixture with a gas content of at least30% at the suction n
21、ozzle, with steady operation 3 Nominal duty point and main dimensions The nominal duty point and main dimensions appropriate to the relevant pump designation shall be as given inTable 1 and as illustrated inFigure 1. Figure 1 illustrates a pictorial representation of a side channel pump. Pumps to th
22、is standard do not need to correspond to this pictorial representation; only the indicated dimensions and direction of rotation are to be as specified. 4 Hydrostatic pressure test Hydrostatic pressure test: internal pressure test using water. Hydrostatic test pressure shall be1.3times the maximum di
23、scharge pressure but shall not exceed52bar. The relation between cold test pressure and hot operating pressure, or extreme cold operating pressure, shall be the subject of agreement between purchaser and manufacturer. 5 Designation Side channel pumps in accordance with this standard shall be designa
24、ted as follows. The designation incorporates the type of pump, the number of the European Standard, the size and number of stages. Example. A side channel pump size50 with two stages is designated: Side Channel Pump EN7345002 Figure 1 Main dimensionsEN 734:1995 4 BSI 11-1999 Table 1 Nominal duty poi
25、nt and main dimensions Size Number of stages Nominal duty point at 1450 min 1(. 24s 1 ) DN b a d k6 s screws f h 1 h 2 l m 1 m 2 n 1 n 2 v Nominal flow a Nominal head a m 3 /h l/s m mm mm mm mm mm mm mm mm mm mm mm mm mm 20 01 1,25 0,35 20 20 120 14 M10 170 100 100 25 270 236 140 105 112 02 40 c 20
26、d 34 d 34 d 34 d 31 01 2,5 0,7 20 32 146 19 200 112 132 40 314 280 170 135 133 02 40 c 20 d 40 d 40 d 40 d 32 01 5 1,4 20 32 146 314 280 02 40 c 20 d 40 d 40 d 40 d 40 01 10 2,8 20 40 160 24 195 132 140 45 303 269 195 140 140 02 40 215 358 324 c 20 d 55 d 55 d 55 d 50 01 16 4,5 20 50 175 28 M12 237
27、160 165 50 359 331 215 170 159 02 40 250 444 406 c 20 d 75 d 75 d 75 d 65 01 25 7 20 65 195 32 262 180 180 65 412 374 245 195 172 02 40 285 502 464 c 20 d 90 d 90 d 90 d NOTEInformation on keys and keyways is to be taken from the manufacturers data. a The nominal flow and associated nominal head are
28、 standard values which refer to the pumping of liquid. b Inlet and outlet connections and flange mounting dimensions according to PN 40. c The number of stages can be more than two, the required number of stages can be obtained from the required head and will be shown in the manufacturers data. See
29、footnote 4. d With each additional stage the nominal head and the length of the pump, for dimensions a 1 , m 1and m 2 , increase by the values shown.blankBS EN 734:1995 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for prepar
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