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1、JIS JAPANESE INDUSTRIAL STANDARD Translated and Published by Japanese Standards Association (IS0 6953-2 : 2000) Pneumatic fluid power - Compressed air pressure regulators and filter- regulators - Part 2: Test methods to determine the main characteristics to be included in literature from suppliers I
2、Cs 23.100.50 Reference number : JIS B 8372-2 : 2003 (E) PROTECTED BY COPYRIGHT 8s B 8372-2 : 2003 (IS0 6953-2 : 2000) Foreword This translation has been made based on the original Japanese Industrial Standard established by the Minister of Economy, Trade and Industry through deliberations at the Jap
3、anese Industrial Standards Committee, as the result of proposal for establishing a Japanese Industrial Standard submitted by Japan Fluid Power Association (JFPAYJapanese Standards Association (JSA) with the draft being attached, based on the provision of Article 12 Clause 1 of the Industrial Standar
4、dization Law. This Standard has been made based on IS0 6953-2:2000 Pneumatic fluid power - Compressed air pressure regulators and filter-regulators - Part 2: Test methods to determine the main characteristics to be included in literature from suppliers for the purposes of making it easier to compare
5、 this Standard with International Standard; to prepare Japanese Industrial Standard conforming with International Standard; and to propose a draft of an International Standard which is based on Japanese Industrial Standard. JIS B 8372 consists of the following 2 parts under the general title “Pneuma
6、tic fluid power - Compressed air pressure regulators and filter-regulators”: Part 1: Main characteristics to be included in literature from suppliers and product-marking requirements Part 2: Test methods to determine the main characteristics to be included in literature from suppliers. Date of Estab
7、lishment: 2003-03-20 Date of Public Notice in Official Gazette: 2003-03-20 Investigated by: Japanese Industrial Standards Committee Standards Board Technical Committee on Industrial Machinery JIS B 8372-2 :2003, First English edition published in 2005-02 Translated and published by: Japanese Standar
8、ds Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. O JSA 2005 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or
9、mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan PROTECTED BY COPYRIGHT B 8372-2 : 2003 (IS0 6953-2 : 2000) Contents Page Introduction . 1 Scope 2 Normative references 3 Terms and definitions 4 Units 5 Test conditions . 5.1 Temperat
10、ure . 5.2 Pressures . 6 Test procedure to verify rated pressure . 7 Performance tests 7.1 Test installation . 7.2 General test procedure . 7.3 Forward flow characteristics test . 7.4 Pressure regulation characteristics test 7.5 Relief flow characteristics test 8 Presentation of data . 8.1 Forward-fl
11、ow characteristics . 8.2 Pressure-regulation characteristics 8.3 Relief flow characteristics Annex A (informative) Bibliography . 1 1 2 2 2 3 3 3 3 4 4 5 5 5 6 7 7 7 7 9 (i PROTECTED BY COPYRIGHT -,-,- JAPANESE INDUSTRIAL STANDARD JIS B 8372-2 : 2003 (IS0 6953-2 2000) Pneumatic fluid power - Compres
12、sed air pressure regulators and filter-regulators - Part 2: Test methods to determine the main characteristics to be included in literature from suppliers Introduction This Japanese Industrial Standard has been prepared based on the first edition of IS0 6953-2 Pneumatic fluid power - Compressed air
13、pressure regulators and filter-regulators - Part 2: Test methods to determine the main characteristics to be included in literature from suppliers published in 2000 without modifying the technical contents. Portions underlined with dots are the matters not stated in the original International Stan d
14、ard. In pneumatic fluid power systems, power is transmitted and controlled through air under pressure circulating within a circuit. Where reduction and regulation of the pressure is desired, the regulators and filter-regulators are components designed to maintain the compressed air pressure approxim
15、ately constant. 1 Scope This part of JIS B 8372 specifies tests, test procedures and a method of presenting the results concerning the parameters which define the main characteristics to be included in literature from suppliers of regulators and filter-regulators conforming to JIS B 8372-1. The aim
16、of this part of JIS B 8372 is - to facilitate the comparison of pressure regulators and filter-regulators by - to assist in the proper application of pressure regulators and filter-regulators The tests specified are intended to allow comparison between the different type of regulators and filter-reg
17、ulators; they are not production tests to be carried out on each pressure regulator or filter-regulator manufactured. standardizing test methods and presentation of test data; in compressed air systems. NOTE : The International Standard corresponding to this Standard is as follows. In addition, symb
18、ols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/ IEC Guide 21. IS0 6953-2 : 2000 Pneumatic fluid power - Compressed air pressure regulators and filter-regu
19、lators - Part 2: Test methods to determine the main characteristics to be included in literature from suppliers (IDT) PROTECTED BY COPYRIGHT -,-,- 2 B 8372-2 : 2003 (IS0 6953-2 : 2000) 2 Normative references The following standards contain provisions which, through reference in this Standard, consti
20、tute provisions of this Standard. If the indication of the year of publication is given to these referred standards, only the edition of the indicated year constitutes the provision of this Standard but the revision and amendment made thereafter do not apply. The normative references without the ind
21、ication of the year of coming into effect apply only to the most recent edition (including amendments). Glossary of terms for oil hydraulics and pneumatics JIS B 0142 NOTE : IS0 5598:1985 Fluid power systems and components - Vocabulary is equivalent to the said standard. Pneumatic fluid power - Comp
22、ressed air pressure regulators and JIS B 8372-1 NOTE : JIS B 8390 NOTE : JIS K 2001 NOTE : JIS Z 8203 JIS Z 8601 NOTE : filter-regulators - Part 1: Main characteristics to be included in literature from suppliers and product-marking requirements IS0 6953-1:2000 Pneumatic fluid power - Compressed air
23、 pressure regulators and filter-regulators - Part 1: Main characteristics to be included in literature from suppliers and product-marking requirements is identical with the said standard. Pneumatic fluid power - Components using compressible fluids - Determination of flow-rate characteristics IS0 63
24、58: 1989 Pneumatic fluid power - Components using compressible fluids - Determination of flow-rate characteristics is identical with the said standard. Industrial liquid lubricants - IS0 viscosity classification IS0 3448:1992 Industrial liquid lubricants - IS0 viscosity classification is identical w
25、ith the said standard. SI units and recommendations for the use of their multiples and of certain other units Preferred numbers IS0 3:1973 Preferred numbers - Series of preferred numbers is equivalent to the said standard. IS0 65:1981 IS0 2944:2000 Carbon steel tubes suitable for screwing in accorda
26、nce with IS0 7-1 Fluid power systems and components - Nominal pressures 3 Terms and definitions For the purposes of this part of JIS B 8372, the terms and definitions given in JIS B 0142 and JIS B 8372-1 apply. 4 Units systems, in particular: Units from JIS Z 8203 are generally used in pneumatic flu
27、id power - gauge pressure, expressed in megapascals (MPa); - temperature, expressed in degrees Celsius ( O C ) ; - flow rate, expressed in litres per min (L/min) (ANR). PROTECTED BY COPYRIGHT -,-,- 3 B 8372-2 : 2003 (IS0 6953-2 : 2000) 5 Test conditions 5 . 1 equipment and the ambient air temperatur
28、e at 25 “C I 10 “C. Temperature For all tests, maintain the temperature of the process air, the 5 . 2 Pressures The specified pressures shall be held to within +2 %. The preferred test pressures are those given in 4 . 3 . 2 of JIS B 8372-1, or from IS0 2944. Where other test pressures are required,
29、the values shall be chosen from series R5 of preferred numbers, according to JIS Z 8601. 6 Test procedure to verify rated pressure 6 . 1 Perform this test on three random samples if a single rated pressure is proposed for the entire product, or on six random samples if separate ratings are proposed
30、for the inlet and outlet sections. If the product uses a diaphragm, modify or replace it to withstand the pressure applied (diaphragms are excluded from the test criteria). Other product sealing means may be modified to prevent leakage and allow structural failure to occur during the test, but modif
31、ications may not increase the structural strength of the pressure-containing envelope. 6 . 2 Prepare the test samples as follows: 6 . 2 . 1 If a single pressure rating is proposed for the entire product, remove the control spring and replace it with a solid spacer whose length will maintain the popp
32、et in its half-open position. Close the gauge ports and the inlet port with plugs, and perform all testing by applying pressure to the outlet port. 6 . 2 . 2 If a separate pressure rating is proposed for the inlet and outlet sections of the regulator, relieve the control spring force on three of the
33、 samples. Using a proposed pressure rating for the inlet, perform testing on the inlet port, allowing the poppet to be closed and keeping the outlet port open. Prepare the other three samples as described in 6 . 2 . 1 and test them using a proposed pressure rating for the outlet port. 6 . 3 Fill sam
34、ples with a liquid that does not exceed IS0 VG32, according to JIS K 2001, and maintain the temperatures given in 5 . 1 . 6 . 4 After stabilization of the temperature, pressurize slowly to a level of 1.5 times the proposed rated pressure. Hold at this level for 2 min and observe for leakage or failu
35、re, as defined in 6.6. 6 . 5 If there is no leakage or failure, increase the pressure by approximately half its proposed rating. Hold at this pressure for 2 min and observe for leakage or failure, as defined in 6.6. 6 . 5 . 1 Products constructed of light alloys, brass and steel Continue raising the
36、 pressure as above until a level of four times the proposed rated pressure has been reached. 6.5.2 Products constructed of zinc diecast alloys or plastics 6 . 5 . 2 . 1 Design operating temperatures of up to 50 “C Continue raising the pressure as above until a level of four times the proposed rated
37、pressure has been reached. PROTECTED BY COPYRIGHT -,-,- 4 B 8372-2 2003 (IS0 6953-2 2000) 6 . 5 . 2 . 2 Design operating temperature of between 50 “C to 80 “C the pressure as above until a level of five times the proposed rated reached. Continue raising pressure has been 6.6 The criterion for a fail
38、ure is a fracture, separation of parts, or a crack, or that which can allow enough liquid to pass across the pressure-containing envelope to wet the outer surface. Leakage across the port threads shall not constitute a failure, unless caused by a fracture or a crack. 6 . 7 respective tests. The prop
39、osed rated pressure will be verified if all three samples pass their 6.8 Where a unit or sub-assembly in the unit (for example, reservoirlsight glass) is constructed of different materials, the higher appropriate factor should be used. The applied pressure may be restricted to the area of the interf
40、ace between the different materials. 6.9 Where the pressure-containing envelope design is covered by a pressure vessel code in the market of sale, the requirements of that code take precedence over the requirements stated in this part of JIS B 8372. R1 4 C 3 Air inlet Inlet filter Inlet regulator Op
41、tional surge chamber Supply shut-off valve Pressure-measuring tube Water Hose / OD 6 9 10 11 12 13 14 15 8 Flow-control valve Optional silencer By-pass shut-off valve Control regulator (non-relieving) Primary Secondary Tested regulator NOTE : Graphical symbols, in conformance with JIS B 0125-1. Figu
42、re 1 Test circuit 7 Performance tests 7 . 1 Test installation PROTECTED BY COPYRIGHT -,-,- 5 B 8372-2 : 2003 (IS0 6953-2 : 2000) 7 . 1 . 1 Test circuit The test circuit shall comply fully with the one described in figure 1. Only one flow-meter location is required per test. The following locations a
43、re optional: - F1, F3 or F4 for forward-flow characteristics test and for pressure-regulation characteristics test; - F1 or F2 for relief-flow characteristics test. 7 . 1 . 2 Pressure-measuring tube The pressure-measuring tubes shall comply fully with those described in JIS B 8390, figure 3, table 4
44、, 5.5 and 5.6. 7 . 2 General test procedure 7 . 2 . 1 Recordings for each series of tests shall be conducted under essentially steady- state conditions. This may be accomplished either with continuous recording equipment or point-by-point measurements, provided that the recordings are conducted with
45、 care and with a sufficiently slow change in conditions to avoid a drift in the steady- state characteristics. 7 . 2 . 2 For each point, the permitted variation in the parameters is given in clause 5. 7 . 2 . 3 A periodic check shall be made to confirm that none of the measuring instruments pressure
46、 intakes are blocked by solid or liquid particles. 7 . 3 Forward flow characteristics test 7 . 3 . 1 With the test regulator installed as in figure 1, and without flow, with the by- pass shut-off valve closed, and the supply shut-off valve open, select and apply an inlet pressure from table 1. 7 . 3
47、 . 2 Using the regulators adjustable pressure range, select at least two outlet pressure set points from table 1 to be used in this test. Adjust the regulator outlet to the lowest level, making certain that the pressure is increasing (instead of decreasing) to reach this point. 7 . 3 . 3 Using the f
48、low-control valve, allow air to pass through the regulator, recording its flow rate and corresponding outlet pressures. If point-by-point data is recorded, obtain closely spaced data in the low flow region. 7 . 3 . 4 Continue recording data until maximum flow has been achieved in the test circuit, t
49、hen record additional data for a decreasing flow rate back to zero flow. 7 . 3 . 5 During the conduct of the changing flow rate (both increasing and decreasing), continuously adjust the inlet supply pressure to keep it constant at the test level. 7.3.6 Record the inlet test temperature at the beginning and end of the test. 7 . 3 . 7 Repeat the above procedures at the ot