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CJ/T 179-2018: Self-operated flow control valve
Status: Valid CJ/T 179: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| CJ/T 179-2018 | English | 229 |
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Self-operated flow control valve
| Valid |
CJ/T 179-2018
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| CJ/T 179-2003 | English | 359 |
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Self-operated flow control valve
| Obsolete |
CJ/T 179-2003
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PDF similar to CJ/T 179-2018
Basic data | Standard ID | CJ/T 179-2018 (CJ/T179-2018) | | Description (Translated English) | Self-operated flow control valve | | Sector / Industry | Urban Construction Industry Standard (Recommended) | | Classification of Chinese Standard | P46 | | Classification of International Standard | 91.140.10 | | Word Count Estimation | 10,175 | | Date of Issue | 2018-11-16 | | Date of Implementation | 2019-05-01 | | Older Standard (superseded by this standard) | CJ/T 179-2003 | | Quoted Standard | GB/T 1220; GB/T 1239.2; GB/T 12225; GB/T 12226; GB/T 12227; GB/T 12229; GB/T 12716; GB/T 13808; GB/T 13927; GB/T 17241.6; GB/T 23934 | | Regulation (derived from) | Ministry of Housing and Urban-Rural Development Announcement 2018 No. 296 | | Issuing agency(ies) | Ministry of Housing and Urban-Rural Development of the People's Republic of China | | Summary | This standard specifies the classification and marking, general provisions, requirements, test methods, inspection rules, marking, packaging, transportation and storage of self-operated flow control valves (hereinafter referred to as control valves). This standard is applicable to self-operated flow control valves used in heating (cold) systems with medium inlet pressure less than 2.5 MPa, temperature of 4 ��C to 150 ��C, and water as medium. | CJ/T 179-2018: Self-operated flow control valve---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.
Self-operated flow control valve
ICS 91.140.10
P46
People's Republic of China urban construction industry standards
Replacing CJ/T 179-2003
Self-operated flow control valve
Published on.2018-11-16
2019-05-01 implementation
Ministry of Housing and Urban-Rural Development
Content
Foreword I
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Classification and Marking 2
5 General requirements 2
6 Requirements 4
7 Test method 4
8 Inspection rules 5
9 Cleaning and Handling 6
10 Marking, packaging, transportation and storage 7
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is a revision of CJ/T 179-2003 "Self-operated flow control valve", compared with CJ/T 179-2003, the main technical content
The changes are as follows.
--- Increased the scale indication display requirements of the control valve;
--- Increase the upper limit of the adaptation range of the working pressure difference of the self-operated flow control valve;
---Modified the working pressure of the control valve;
--- Modified the material category used by the spring.
This standard was proposed by the Institute of Standardization of the Ministry of Housing and Urban-Rural Development.
This standard is under the jurisdiction of the Heating Standardization Technical Committee of the Ministry of Housing and Urban-Rural Development.
This standard was drafted. Beijing Beihua Heating Co., Ltd., Beijing Gas Thermal Engineering Design Institute Co., Ltd., Hebei Balance Valve System
Manufacturing Co., Ltd., Hebei Tongli Automatic Control Valve Manufacturing Co., Ltd., Beijing Far East Instrument Co., Ltd., Wen'an County Jielan Special HVAC Equipment Co., Ltd.
The main drafters of this standard. Wang Jianguo, Wang Wei, Guo Xu, Cui Xiaoqian, Lu Chao, Wang Li, Song Yumei, Ma Li, Shi Dongchun, Wang Wei.
The previous versions of the standards replaced by this standard are.
---CJ/T 179-2003.
Self-operated flow control valve
1 Scope
This standard specifies the classification and marking, general regulations, requirements, test methods and inspections of self-operated flow control valves (hereinafter referred to as control valves).
Rules, signs, packaging, transportation and storage.
This standard is applicable to heating (cold) systems with medium inlet pressure less than 2.5 MPa, temperature of 4 °C~150 °C, and water as medium.
Self-operated flow control valve.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 1220 stainless steel rod
GB/T 1239.2 Technical requirements for cold coiled cylindrical springs - Part 2. Compression springs
GB/T 12225 general valve copper alloy casting technical conditions
GB/T 12226 general valve gray cast iron parts technical conditions
GB/T 12227 general valve ductile iron casting technical conditions
GB/T 12229 general valve carbon steel casting technical conditions
GB/T 12716 60° sealed pipe thread
GB/T 13808 copper and copper alloy extruded rod
GB/T 13927 industrial valve pressure test
GB/T 17241.6 integral cast iron flange
GB/T 23934 hot coil cylindrical spiral compression spring technical conditions
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
When working, it does not rely on external power, and maintains a valve with a constant flow rate within a certain working pressure range.
3.2
Set the flow definiteflow
Adjust the opening of the control valve and control the flow as determined by the requirements.
3.3
Pressure sensitive component componentofpressureperception
A component that senses changes in media pressure and drives the valve flap to automatically perform control functions.
3.4
Working pressure difference workingpressuredifference
Acting on both ends of the control valve allows the control valve to properly achieve the differential pressure of the flow control function.
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