ISO/TC 131/SC 4 N 872

Transcription

1 Form 8A: Committee decision for DIS Secretariat: ANSI ISO/TC 131/SC 4 N 872 Project number and title: ISO/CD Fluid power systems and components -- Connectors and associated components -- Nominal pressures This form should be sent to the ISO Central Secretariat ( together with the draft of the project, by the secretariat of the technical committee or subcommittee concerned. The accompanying document is submitted for circulation to member body vote: As a DIS Consensus has been obtained from the P-members of the committee: on At the meeting of ISO/TC 131/SC 4. See Resolution number Resolution 6:2018. In document N N867. By ballot initiated on Listing of the P-members (NWIP, CD or Resolution) P-members in favour: 7 China (SAC), Italy (UNI), Japan (JISC), Netherlands (NEN), Portugal (IPQ), United Kingdom (BSI), P-members voting against: Germany (DIN), Poland (PKN) 2 FORM 8A Committee decision on 1 of 5

2 P-members abstaining: 4 Brazil (ABNT), France (AFNOR), India (BIS), Sweden (SIS) P-members who did not vote: 0 Remarks: SC 4 approved the resolution upon a recommendation from SC 4/WG 6 where the experts discussed the German comments. Germany then agreed to progress the document to the DIS stage. I hereby confirm that this draft meets the requirements of Part 2 of the ISO/IEC Directives: Secretariat: ANSI Date: Name/Signature of TC/SC Secretary: Husenica (Rockhill), Denise Ms FORM 8A Committee decision on 2 of 5

3 Result of voting Ballot Information Ballot reference ISO/CD Ballot type CD Ballot title Fluid power systems and components -- Connectors and associated components -- Nominal pressures Opening date Closing date Note Dear Committee Members, TC 131/SC 4 Chairman (and ISO 4399 Project Leader) Lou Moreiras has asked for a second Committee Draft to be balloted. He has updated some of the document based on the first CD comments. The CD.2 comments will be discussed in the October meeting. Sincerely, Denise Rockhill/TC131/SC 4 secretary Member responses: Votes cast (13) Comments submitted (2) Votes not cast (0) Brazil (ABNT) China (SAC) France (AFNOR) Germany (DIN) India (BIS) Italy (UNI) Japan (JISC) Netherlands (NEN) Poland (PKN) Portugal (IPQ) Sweden (SIS) United Kingdom (BSI) Australia (SA) Belgium (NBN) Questions: Q.1 "Do you approve the circulation of the draft as a DIS?" 3 of 5

4 Votes by members Q.1 Brazil (ABNT) China (SAC) France (AFNOR) Germany (DIN) India (BIS) Italy (UNI) Japan (JISC) Netherlands (NEN) Poland (PKN) Portugal (IPQ) Sweden (SIS) United Kingdom (BSI) Disapproval Disapproval Answers to Q.1: "Do you approve the circulation of the draft as a DIS?" 7 x China (SAC) Italy (UNI) Japan (JISC) Netherlands (NEN) Portugal (IPQ) United Kingdom (BSI) 0 x with comments 2 x Disapproval Germany (DIN) Poland (PKN) 4 x Brazil (ABNT) France (AFNOR) India (BIS) Sweden (SIS) Comments from Voters Member: Comment: Date: Germany (DIN) Comment File :51:17 Poland (PKN) Comment File :23:47 Comments from Commenters Member: Comment: Date: 4 of 5

5 Australia (SA) Comment :15:20 Abstain Belgium (NBN) Comment :35:24 No comments 5 of 5

6 Template for comments and secretariat observations Date: Document: ISO/TC 131/SC 4 N 523 Project: CD MB/ NC 1 Line number Clause/ Subclause Paragraph/ Figure/Table Type of Comments Proposed change Resolution to the comments comment 2 PL 001 ge ISO 2944 should be revised and updated with proposed data. Pressures for connectors should be marked in ISO ISO/TC 131/SC 4 will recommend to ISO/TC 131 that ISO 2944:2000 be revised with updated pressures after the new ISO 4399 is published. DE DE DE Ed Delete dots: 3 ed The definition is not according to the ISO Directives. a and. have to be deleted. The second sentence is superfluous and ISO Directives: May contain provisions (shall, should or may) related to the use of the term. 4.1 ed The wording with the equivalent value in bars 1 in parentheses does not reflect table 1 anymore, because the parenthesises have been removed for easier understanding of the pressure series. ISO 2944, Fluid power systems and components Nominal pressures. ISO 5598, Fluid power systems and components Vocabulary. To write: a pressure value assigned to a component, piping or a system for the purpose of convenient designation and indicating its belonging to a series. To write: Note 1 to entry: This definition is the same as that used in ISO 2944 and is intended solely to complete this document. A more comprehensive definition for general purposes may be established subsequently. To write: with the equivalent value in bars in the following column Accepted in principle. Paragraph to be changed to: When used in a sentence, the nominal pressure shall be expressed in megapascals (MPa), with the equivalent value in bar 1 shown in parentheses. DE Table 1 te In pneumatics pressures below 10 bar are generally in use. Quite often 6,3 bar is used for testing pneumatic components. To define reasonable pressure steps, we propose in addition the pressures 1 bar and 2,5 bar. To add 0,1 MPa / 1 bar 0,25 MPa / 2,5 bar 0,63 MPa / 6,3 bar Not accepted. The proposed pressures may be used in pneumatic applications, however there are no connectors rated for lower that 1 MPa (10 bar). 1 MB = Member body / NC = National Committee (enter the ISO 3166 two-letter country code, e.g. CN for China; comments from the ISO/CS editing unit are identified by **) 2 Type of comment: ge = general te = technical ed = editorial Page 1 of 2

7 Template for comments and secretariat observations Date: Document: ISO/TC 131/SC 4 N 523 Project: CD MB/ NC 1 Line number Clause/ Subclause Paragraph/ Figure/Table Type of Comments Proposed change Resolution to the comments comment 2 DE Table 1 te For discussion: The pressure value 5 MPa / 50 bar is used in ISO 7241:2014 for series B couplings size 50 and in ISO for 2 inch connectors, but only made of copper alloy. Alternatively, it can be written in square brackets, but it should identical with 6,3 MPa which is used in the same standards. To add 5 MPa / 50 bar DE Table 1 te For discussion: The pressure value 8 MPa / 80 bar is used in ISO for 2 inch connectors. To add 8 MPa / 80 bar Accepted, but in square brackets. DE Table 1 te Although the pressure values 20 MPa and 40 MPa are actually used in many component standards they will be replaced by 21 MPa (3000 PSI) and 42 MPa (6000 PSI) in future. Therefore, they should be written within square brackets so that these pressures will not be used for new designs. To write [20 MPa] / [200 bar] and [40 MPa] / [400 bar]. DE Table 1 te The pressure gap between 42 MPa and 56 MPa is very huge. 50 MPa will close this gap and is more used than 49 MPa for hydraulic hoses, pumps and light duty connectors in small sizes. To add 50 MPa / 500 bar DE Table 1 te For discussion: 70 MPa is used in ISO 16301, Rubber and plastics hoses and hose assemblies, wire- or textile-reinforced, for manually operated hydraulic jacks Specification, and For discussion 70 MPa (700 bar) to be listed. ISO 19385, Rubber and plastics hoses and hose assemblies, wire- or textile-reinforced, for water jetting or water blasting applications - Specification (will be replaced by ISO/NP for water jetting and hydraulic applications) To add in square brackets? DE Table 1 te For discussion: 80 MPa is used for heavy duty connectors in small sizes. To add 80 MPa / 800 bar 1 MB = Member body / NC = National Committee (enter the ISO 3166 two-letter country code, e.g. CN for China; comments from the ISO/CS editing unit are identified by **) 2 Type of comment: ge = general te = technical ed = editorial Page 2 of 2