GB/T 33146-2016 in English
SUPERSEDEDValves for liquefied dimethyl ether cylinders
- Issued on:2016-10-13
- Implemented on:2017-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$214.00
《GB/T 33146-2016液化二甲醚瓶阀》由TC31（全国气瓶标准化技术委员会）归口，TC31SC5（全国气瓶标准化技术委员会气瓶附件分会）执行，主管部门为国家标准化管理委员会。
Introduction
In-depth analysis of GB/T 33146-2016 liquefied dimethyl ether cylinder valve standard
1. Standard scope and applicability
This standard applies to cylinder valves on liquefied dimethyl ether cylinders with an ambient temperature of -40℃~+60℃, a nominal working pressure of 1.6MPa, and a nominal volume of no more than 150L. It is not applicable to liquefied dimethyl ether cylinder valves for vehicles.
2. Background of standard formulation
With the widespread application of liquefied dimethyl ether in urban gas, it is crucial to ensure the safety of its storage and transportation. The formulation of GB/T 33146-2016 standard aims to standardize the technical requirements, test methods and inspection rules of liquefied dimethyl ether cylinder valves to ensure the safe operation of gas cylinders.
3. Comparison of standard frameworks
| Standard dimensions | GB/T 33146-2016 | Reference standards |
|---|---|---|
| Range | -40℃~+60℃, nominal pressure 1.6MPa | GB 25035 "Dimethyl ether for urban gas" |
| Material requirements | Valve body: H Pb59-1 bar; Seal: media compatibility test | GB 15382 "General technical requirements for gas cylinder valves" |
| Performance indicators | Opening and closing torque ≤ 5N·m, pressure resistance test ≥ 5 times the nominal pressure | GB 13005 "Terms of Gas Cylinders" |
4. Analysis of Standard Technical Requirements
Material requirements:
- Main components such as valve body and valve stem are made of HPb59-1 bar material, which complies with GB/T 4423 and GB/T 5231.
- The handwheel must pass the fire resistance test and can still manually close the valve after burning in a flame of 800℃~1000℃ for 1 minute.
Seal requirements:
- Non-metallic seals must pass aging resistance, low temperature resistance and medium compatibility tests.
- Volume expansion rate ≤15%, mass loss rate ≤10% (23℃±2℃, soaked in liquefied dimethyl ether for 168 hours).
5. Implementation suggestions
To ensure the effective implementation of the standard, it is recommended that:
- Manufacturing companies should establish a sound quality management system and conduct material inspection and finished product inspection in strict accordance with the requirements of the standard.
- Regularly follow up on the use of bottle valves to promptly identify and resolve potential problems.
- Strengthen technical personnel training to ensure that relevant personnel are familiar with the content and technical requirements of the standard.
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