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GB/T 20081.2-2021 English PDF

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Upon your order, we will start to translate GB/T 20081.2-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Q: Can I share the purchased PDF of GB/T 20081.2-2021_English with my colleagues?

Yes. The purchased PDF of GB/T 20081.2-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

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Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries). Avoidance of Double Taxation Agreements (DTAs) between Singapore and 100+ Countries: https://www.iras.gov.sg/taxes/international-tax

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Q: Should I purchase the latest version GB/T 20081.2-2021?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20081.2-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$694.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 20081.2-2021: 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
Status: Valid

GB/T 20081.2: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20081.2-2021	694	Add to Cart	6 days	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	Valid
GB/T 20081.2-2006	399	Add to Cart	3 days	Pneumatic fluid power -- Compressed air pressure regulators and filter-regulators -- Part 2: Test methods to determine the mail characteristics to be included in literature from suppliers	Obsolete

Similar standards

GB/T 20080 GB/T 17491 GB/T 20082 GB/T 22107 GB/T 20081.3 GB/T 20081.1

Basic data

Standard ID: GB/T 20081.2-2021 (GB/T20081.2-2021)
Description (Translated English): 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
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J20
Word Count Estimation: 38,339
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 20081.2-2021: 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

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
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 ICS 23.100.50 CCSJ20 National Standards of People's Republic of China Replace GB/T 20081.2-2006 Pneumatic pressure reducing valve and filter pressure reducing valve Part 2.Assess what should be included in the business document Test methods for main characteristics (ISO 6953-2.2015, IDT) Released on 2021-08-20 and implemented on 2022-03-01 State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 Symbols and units 2 5 Test condition 2 6 Test procedure to verify the rated pressure 3 7 Flow characteristic test 3 8 Pressure regulation test 7 9 The maximum air consumption of a pilot-operated pressure reducing valve with exhaust function when the forward flow or overflow flow is zero 7 10 Specific test procedures 8 11 Presentation of test results 14 Appendix A (informative) Comparison of repeatability test methods 15 Reference 30

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is Part 2 of GB/T 20081 "Pneumatic Pressure Reducing Valves and Filter Pressure Reducing Valves". GB/T 20081 has released the following part. ---Part 1.The main characteristics and product identification requirements that should be included in the business documents; ---Part 2.Test methods for evaluating the main characteristics that should be included in the business documents; ---Part 3.Alternative methods for testing the flow characteristics of the pressure reducing valve. This document replaces GB/T 20081.2-2006 "Pneumatic Pressure Reducing Valves and Filter Pressure Reducing Valves Part 2.Evaluation Business Documents should include In addition to editorial changes, the main technical changes are as follows. a) Modified the "scope" (see Chapter 1, Chapter 1 of the.2006 edition); b) Modified "Normative Reference Documents" (see Chapter 2, Chapter 2 of the.2006 edition); c) Modified "Terms and Definitions" (see Chapter 3, Chapter 3 of the.2006 edition); d) Modified "Symbols and Units" (see Chapter 4, Chapter 4 of the.2006 edition); e) Modified the "test conditions" (see Chapter 5, Chapter 5 of the.2006 edition); f) Modified "Test Procedure for Verification of Rated Pressure" (see 6.1 and 6.3, Chapter 6 of the.2006 edition); g) Modified "Flow Characteristics Test" (see Chapter 7, Chapter 7 of the.2006 edition); h) Modified "Figure 1" (see Figure 1); i) Modified "Pressure Regulation Test" (see Chapter 8); j) Added "the maximum air consumption of a pilot-operated pressure reducing valve with exhaust function when the forward flow or overflow flow is zero" (see page 9 chapter); k) Added "Specific Test Procedures" (see Chapter 10); l) Added "Expression of Test Results" (see Chapter 11); m) Appendix A has been added. This document uses the translation method to be equivalent to ISO 6953-2.2015 "Pneumatic Pressure Reducing Valves and Filter Pressure Reducing Valves Part 2.Evaluation of Business Test methods for the main characteristics that should be included in the document". The Chinese documents that have consistent correspondence with the normatively cited international documents in this document are as follows. ---GB/T 786.1-2021 Graphical symbols and circuit diagrams of fluid transmission systems and components-Part 1.Graphical symbols (ISO 1219-1.2012, IDT); ---GB/T 3141-1994 ISO viscosity classification of industrial liquid lubricants (idtISO 3448.1992); ---GB/T 14513.1-2017 Determination of flow characteristics of compressible fluid components used in pneumatics Part 1.Steady-state flow General rules and test methods (ISO 6358-1.2013, IDT); ---GB/T 17446-2012 Fluid Power System and Components Vocabulary (ISO 5598.2008, IDT); ---GB/T 39956.1-2021 Pneumatic electro-pneumatic pressure control valve Part 1.Main characteristics that should be included in commercial documents (ISO 10094-1.2010, IDT); ---GB/T 39956.2-2021 Pneumatic electro-pneumatic pressure control valve Part 2.Evaluation of the main characteristics that should be included in the business document The test method (ISO 10094-2.2010, IDT). Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Hydraulic and Pneumatic Standardization Technical Committee (SAC/TC3). Drafting organizations of this document. Weihai Bosheng Pneumatic Hydraulic Co., Ltd., National Pneumatic Product Quality Supervision and Inspection Center, Henan Pengli Technology Co., Ltd. Co., Ltd., Zhejiang Yiri Pneumatic Technology Co., Ltd., Xiamen Osense Technology Co., Ltd., Ningbo Jiaerling Pneumatic Machinery Co., Ltd., Ningbo Asia Deke Automation Industry Co., Ltd., Jinhua Guanri Intelligent Technology Co., Ltd., Beijing Machinery Industry Automation Research Institute Co., Ltd. The main drafters of this document. Zhang Zhiqing, Liu Lijiao, Ren Cheli, Shan Junbo, Fang Qinghua, Pi Kunlin, Liu Jinhua, Lin Pengxiang, Sun Ningning, Cao Qiaohui. The previous releases of this document and the standard documents replaced are as follows. ---In.2006, it was first published as GB/T 20081.2-2006; ---This is the second revision.

Introduction

In a pneumatic system, power is transmitted and controlled by compressed air in a closed loop. Need to reduce or adjust the pressure in the circuit, Various pressure reducing valves and filter pressure reducing valves are components designed to maintain stable air pressure. Therefore, some characteristics of these components need to be understood To determine the suitability of their application. GB/T 20081 consists of three parts. ---Part 1.The main characteristics and product identification requirements that should be included in the business documents. The purpose is to stipulate that the business documents should include The main characteristics and product identification requirements of the included pressure reducing valve and filter pressure reducing valve. ---Part 2.Test methods to assess the main characteristics that should be included in the business documents. The purpose is to stipulate according to GB/T 20081.1 The main characteristics of the pneumatic pressure reducing valve and filter pressure reducing valve should be included in the business documents to be tested, the test items, test procedures and The presentation method of test results. ---Part 3.Alternative methods for testing the flow characteristics of the pressure reducing valve. The purpose is to specify optional tests for testing the flow characteristics of pneumatic components. Pneumatic pressure reducing valve and filter pressure reducing valve Part 2.Assess what should be included in the business document Test methods for main characteristics

1 Scope

This document stipulates that the main characteristics of GB/T 20081.1 pneumatic pressure reducing valve and filter pressure reducing valve shall be included in the commercial documents to be tested. The test items, test procedures and the presentation method of test results. The purpose of this document is. ---Standardize the test procedures and test results presentation method, so as to simplify the performance comparison between different pressure reducing valves and filter pressure reducing valves Simple and clear; ---Contribute to the reasonable application of pressure reducing valves and filter pressure reducing valves in pneumatic systems. The test items specified in this document are for comparison between different pneumatic pressure reducing valves and filter pressure reducing valves, not for each piece of manufacturing Both the pneumatic pressure reducing valve and the filtering pressure reducing valve have been inspected for production. Note 1.The electrical-pneumatic pressure control valve related tests are specified in ISO 10094-2. Note 2.Another dynamic test method for testing the flow rate is specified in ISO 6953-3.This method uses isothermal gas tanks instead of flow meters. This method is only applicable to normal To test the decreasing part of the hysteresis curve of the flow and overflow flow characteristics.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 20081.1-2021 Pneumatic pressure reducing valve and filter pressure reducing valve Part 1.The main characteristics and Product identification requirements (ISO 6953-1.2015, IDT) ISO 1219-1 Graphical symbols and circuit diagrams of fluid power transmission systems and components-Part 1.Used for general purpose and data processing Graphical symbols (Fluidpowersystemsandcomponents-Graphicalsymbolsandcircuitdiagrams-Part 1. Graphicalsymbolsforconventionaluseanddata-processingapplications) ISO 3448 Industrial liquid lubricants ISO viscosity classification (Industrialliquidlubricants-ISO viscosityclassifi- cation) ISO 5598 Fluid power systems and components-Vocabulary (Fluidpowersystemsandcomponents-Vocabulary) ISO 6358-1 Determination of flow characteristics of compressible fluid components used in pneumatics-Part 1.General rules for steady-state flow and Test method (Pneumaticfluidpower-Determinationofflow-ratecharacteristicsofcomponentsusing compressiblefluids-Part 1.Generalrulesandtestmethodsforsteady-stateflow) ISO 10094-1 Pneumatic electro-pneumatic pressure control valve Part 1.Main characteristics to be included in commercial documents (Pneumatic fluidpower-Electro-pneumaticpressurecontrolvalves-Part 1.Maincharacteristicstoincludeinthe supplier'sliterature) ISO 10094-2 Pneumatic electro-pneumatic pressure control valve Part 2.Test method for evaluating the main characteristics that should be included in commercial documents Method (Pneumaticfluidpower-Electro-pneumaticpressurecontrolvalve-Part 2.Testmethodstodeter- minemaincharacteristicstoincludeinthesupplier'sliterature) ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 20081.2-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 20081.2-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 20081.2-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 20081.2-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 20081.2-2021?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20081.2-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.