GB/T 8100.3-2021 English PDF

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GB/T 8100.3-2021: Mounting surfaces of hydraulic valves - Part 3: Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 8100.3-2021	499	Add to Cart	5 days	Mounting surfaces of hydraulic valves - Part 3: Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves	Valid

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GB/T 2351   GB/T 7932   GB/T 3766   GB/T 8100.2   GB/T 8102   GB/T 8107   

Basic data

Standard ID: GB/T 8100.3-2021 (GB/T8100.3-2021)
Description (Translated English): Mounting surfaces of hydraulic valves - Part 3: Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J20
Word Count Estimation: 26,262
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 8100.3-2021: Mounting surfaces of hydraulic valves - Part 3: Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves

---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.
Mounting surfaces of hydraulic valves -- Part 3: Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves ICS 23:100:50 CCSJ20 National Standards of People's Republic of China Replacing GB/T 8100-2006 Hydraulic valve mounting surfaces - Part 3: Pressure reducing valves, sequence valves, Unloading Valves, Throttle Valves and Check Valves (ISO 5781:2016, Hydraulicfluidpower-Pressure-reducing valves, 2021-12-31 Released 2022-07-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Symbol 1 5 Tolerance 1 6 size 2 7 Port identification 2 8 Stacking valve 3 9 Maximum working pressure 3 10 Annotation Description 3

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" drafted: This document is part 3 of GB/T 8100 "Hydraulic Valve Mounting Surface": GB/T 8100 has released the following parts: --- Part 2: Speed control valve; --- Part 3: Pressure reducing valves, sequence valves, unloading valves, throttle valves and check valves: This document replaces GB/T 8100-2006 "Fluid transmission pressure reducing valve, sequence valve, unloading valve, throttle valve and one-way valve mounting surface", Compared with GB/T 8100-2006, the main technical changes are as follows: --- Changed normative references (see Chapter 2, Chapter 2 of the:2006 edition); --- Deleted the mounting surface with the main oil port diameter of 4mm (see 6:7, 7:12, Figure 16, Figure 17 of the:2006 edition); --- Delete the provisions on the flow direction of hydraulic oil (see 7:13 of the:2006 edition); --- Deleted Appendix A (see Appendix A of the:2006 edition): This document is revised and adopted ISO 5781:2016 "Fluid transmission pressure reducing valve, sequence valve, unloading valve, throttle valve and one-way valve mounting surface": The technical differences between this document and ISO 5781:2016 and their reasons are as follows: --- Regarding normative reference documents, this document has made adjustments with technical differences to adapt to the technical conditions of our country and the circumstances of the adjustment: The situation is reflected in Chapter 2 "Normative References", and the specific adjustments are as follows: ● Replace ISO 1219-1 (see 4:2) with GB/T 786:1 which is equivalent to adopting international standards; ● Replace ISO 4401 with GB/T 2514 modified to adopt international standards (see Chapter 8); ● Replace ISO 5783 with GB/T 14043 which is equivalent to adopting international standards (see 4:3); ● Replace ISO 5598 with GB/T 17446 which is equivalent to adopting international standards (see Chapter 3); ● Removed ISO 3601-2:2008 (see ISO 5781:2016, Chapter 2 and 5:1): --- Delete the provisions on the direction of hydraulic oil flow (see ISO 5781:2016, 7:12): The following editorial changes have also been made to this document: --- Change the installation surface code "5781-×-×-×-16" to "GB/T 8100:3-×-×-×-2021"; --- Change the code name "5781-10-13-0-16" to "8100:3-09-13-×-2021": Please note that some content of this document may be patented: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed by China Machinery Industry Federation: This document is under the jurisdiction of the National Hydraulic Pneumatic Standardization Technical Committee (SAC/TC3): This document is drafted by: Ningbo Huaye Machinery Manufacturing Co:, Ltd:, Sichuan Aerospace Fiberhome Servo Control Technology Co:, Ltd:, Zhejiang Haihongye Hydraulic Technology Co:, Ltd:, Taizhong Group Yuci Hydraulic Industry Co:, Ltd:, Xiamen Yinduli Industry Co:, Ltd:, Shanghai Lixin Hydraulic Co:, Ltd: Company, Beijing Huade Hydraulic Industry Group Co:, Ltd:, Beijing Machinery Industry Automation Research Institute Co:, Ltd: The main drafters of this document: Zhang Ce, Si Guolei, He Xianjian, Chen Qunli, Zhu Jiangen, Weng Zhidan, Zhu Hongyan, Xiang Mei, Cao Qiaohui: The previous versions of this document and its superseded documents are as follows: --- First published in 1987 as GB/T 8100-1987, first revised in:2006; ---This is the second revision:

Introduction

In a hydraulic transmission system, power is transmitted and controlled through a pressurized fluid in a closed circuit: The hydraulic valve is the most typical in the system A type of element that controls the direction, pressure or flow of fluid in a closed loop: GB/T 8100 specifies the dimensions of the installation surface of hydraulic valves, which are to be composed of 5 parts: --- Part 1: Four-port directional valve: The purpose is to determine the size of the installation surface of the four-port directional valve (temporarily GB/T 2514-2008): --- Part 2: Speed control valve: The purpose is to determine the size of the mounting surface of the speed control valve: --- Part 3: Pressure reducing valves, sequence valves, unloading valves, throttle valves and check valves: The purpose is to determine the pressure reducing valve, sequence valve, unloading valve, joint Dimensions of the mounting surface for flow valves and check valves: --- Part 4: Relief valve: The purpose is to determine the size of the mounting surface of the relief valve (temporarily GB/T 8101-2002): --- Part 5: Four-port and five-port servo valves: The purpose is to determine the size of the installation surface of the four-port and five-port servo valves (temporarily for GB/T 17487-1998): The five parts of GB/T 8100 are formulated by ISO 's independent standards: In order to facilitate the systematic management and implementation of the standards, the independent standards are The quasi-combination is a sub-section standard: Hydraulic valve mounting surfaces - Part 3: Pressure reducing valves, sequence valves, Unloading Valves, Throttle Valves and Check Valves

1 Scope

This document specifies the dimensions and related data of the mounting surfaces of hydraulic pressure reducing valves, sequence valves, unloading valves, throttle valves and check valves to ensure the use of interchangeability: This document applies to the mounting surfaces of hydraulic pressure reducing valves, sequence valves, unloading valves, throttle valves and check valves currently commonly used in industrial equipment:

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document: GB/T 786:1 Graphical symbols and circuit diagrams of fluid transmission systems and components - Part 1: Graphical symbols (GB/T 786:1- 2021, ISO 1219-1:2012, IDT) GB/T 2514 Hydraulic transmission four-port directional control valve mounting surface (GB/T 2514-2008, ISO 4401:2005, MOD) GB/T 14043 Identification code of hydraulic transmission valve mounting surface and valve hole of cartridge valve (GB/T 14043-2005, ISO 5783: 1995, IDT) GB/T 17446 Vocabulary of Fluid Transmission Systems and Components (GB/T 17446-2012, ISO 5598:2008, IDT)

3 Terms and Definitions

Terms and definitions defined in GB/T 17446 apply to this document:

4 symbols

4:1 The following symbols apply to this document: a) A, B, P, T, X and Y indicate ports; b) F1, F2, F3, F4, F5 and F6 indicate threaded holes for fixing screws; c) G represents the positioning pin hole; d) D represents the diameter of the fixing screw; e) rmax represents the edge fillet radius of the mounting surface: 4:2 The graphic symbols used in this document comply with the provisions of GB/T 786:1: 4:3 The codes in this document are in accordance with the provisions of GB/T 14043:

5 Tolerance

5:1 The mounting surface (that is, the area within the double-dotted line) should adopt the following tolerances: ---Surface roughness: Ra≤0:8μm; ......

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