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Valves for liquefied dimethyl ether cylinders
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GB 33146-2025
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| GB/T 33146-2016 | English | 225 |
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Valves for liquefied dimethyl ether cylinders
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Basic data
| Standard ID | GB 33146-2025 (GB33146-2025) |
| Description (Translated English) | Valves for liquefied dimethyl ether cylinders |
| Sector / Industry | National Standard |
| Classification of Chinese Standard | J16 |
| Classification of International Standard | 23.020.30 |
| Date of Issue | 2025-12-02 |
| Date of Implementation | 2026-07-01 |
| Older Standard (superseded by this standard) | GB/T 33146-2016 |
GB/T 33146-2016: Valves for liquefied dimethyl ether cylinders
---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.
Valves for liquefied dimethyl ether cylinders
ICS 23.020.30
J16
National Standards of People's Republic of China
Liquefied dimethyl ether bottle valve
2016-10-13 released
2017-05-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Directory
Preface III
1 Scope 1
2 normative reference document 1
3 Terms and definitions 1
4 Model 2
Structure type and basic dimensions
Technical requirements 3
6.1 Material requirements 3
6.1.1 Metal material 3
6.1.2 non-metallic seal material 3
6.2 Process requirements 4
6.3 Performance requirements 4
6.3.1 opening and closing 4
6.3.2 Air tightness 4
6.3.3 Vibration resistance 4
6.3.4 Temperature resistance 4
6.3.5 Durability 4
6.3.6 Pressure resistance of the valve body 4
6.3.7 Stress corrosion resistance of the valve body 4
6.3.8 Installation 4
6.3.9 fire resistance of hand wheel 5
6.4 Minimum design life 5
7 Inspection and Test Method 5
7.1 Test summary 5
7.2 Mechanical properties of metal materials testing, chemical composition analysis method 5
7.3 Non-metallic seal material performance test 5
7.4 Visual inspection 6
7.5 Basic dimensions of the valve and inspection of the inlet and outlet threads
7.6 Quality inspection 6
7.7 Opening test 6
7.8 Air tightness test 6
7.9 Vibration resistance test 7
7.10 Temperature resistance test 7
7.11 Durability test 7
7.12 Valve body pressure test 7
Damage resistance test of valve body 7
7.14 Installation test 7
7.15 Hand wheel fire resistance test 7
8 Inspection rules 7
8.1 Material inspection 7
8.2 Factory inspection 8
8.3 Type Test 8
8.4 Test item 8
9 mark, packaging, storage and transportation 8
9.1 Mark 8
9.2 Packaging 9
9.3 Storage 10
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the National Standardization Technical Committee for Gas cylinders (SAC/TC31).
The drafting of this standard. Ningbo Fuhua Valve Co., Ltd., Guangdong Wizards Valve Technology Co., Ltd., China City Gas Association liquid fossil
Oil and gas cylinders professional committee, the State Gas Appliance Quality Supervision and Inspection Center, Shanghai Star Environmental Protection Equipment Co., Ltd., Guangdong Yingquan high-tech
Material Co., Ltd.
The main drafters of this standard. Qian Faoxiang, Zhang Baohua, Guo Xiaochun, Zhai Jun, Mao Chongi, Zeng Xiangzhao, Gu Qiuhua.
Liquefied dimethyl ether bottle valve
1 Scope
This standard specifies the terms and definitions of liquefied dimethyl ether bottle valves (hereinafter referred to as valves), type design, structural type and basic dimensions, technology
Requirements, inspection and test methods, inspection rules, signs, packaging, storage and transportation.
This standard applies to the use of ambient temperature -40 ℃ ~ 60 ℃, the nominal working pressure of 1.6MPa, the nominal volume of not more than 150L,
The media complies with the valve on the GB 25035 liquefied dimethyl ether cylinder.
This standard does not apply to automotive liquefied dimethyl ether bottle valves.
Note. The pressure of this standard refers to the gauge pressure.
2 normative reference documents
The following documents are indispensable for reference to this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
Common thread tolerances GB/T 197
Metallic materials - Tensile testing - Part 1. Test methods for room temperature GB/T
GB/T 1184 Shapes and position tolerances Not specified Tolerance values
GB/T 1804 General tolerances Not tolerated by tolerances for linear and angular dimensions
GB/T 3934 general thread gauge technical conditions
GB/T 4423 copper and copper alloy rods
Methods for chemical analysis of copper and copper alloys - Part 1. Determination of copper content GB/T
Methods for chemical analysis of copper and copper alloys - Part 3. Determination of lead content GB/T
Methods for chemical analysis of copper and copper alloys - Part 9. Determination of iron content GB/T
GB/T 5231 processing copper and copper alloy grades and chemical composition
GB 8335 Special thread for cylinder
GB/T 8336 Special thread gauge for gas cylinders
Copper and copper alloys - Determination of residual stress - Ammonia test method GB/T
GB/T 13005 Cylinder Terms
GB 15382 General technical requirements for cylinder valves
DME for Urban Gas
3 terms and definitions
The following definitions and definitions as defined in GB/T 13005 apply to this document.
3.1
Non-removable valve non-removablevalve
Through the damage to the valve on the pressure parts to be demolished the valve, and the demolition of the valve can not be used normally.