Gas cylinder valves are important components for the safe use of gas cylinders. Proper use and maintenance of gas cylinder valves is the key to ensuring gas cylinder safety. This article will outline the basic knowledge about gas cylinder valves.
The Role of Gas Cylinder Valves
- Gas cylinder valves are devices that control the gas flowing in and out of gas cylinders, usually made of brass or steel.
- Valves for different gases have different thread directions at the outlet to prevent wrong or mixed charging.
- Gas cylinder valves need to have certain safety functions, such as residual pressure retaining devices for dissolved acetylene cylinders.
Structural Forms of Gas Cylinder Valves
The main structural forms of gas cylinder valves include: spring pressed, O-ring sealed, diaphragm pressed, diaphragm sealed, O-ring sliding, packing gland pressed etc. Different structures have different sealing mechanisms.
Performance Requirements of Gas Cylinder Valves
Gas cylinder valves need to meet the following performance requirements:
1. Pressure resistance: be able to withstand a certain high pressure without leakage or damage.
2. Heat resistance: the opening and closing mechanism should withstand a certain degree of flame and still be able to close normally.
3. Air tightness: connections at all parts should achieve a certain level of air tightness.
4. Vibration resistance: connections should not be loosened and air tightness unchanged under vibration conditions.
5. Durability: the valve should withstand a certain number of opening and closing cycles and still work properly.
6. After various tests, parts should remain intact, with no displacement, fracture, looseness etc.
7. Withstand a certain mechanical impact without rupturing or leaking.
8. Oxygen valves should withstand oxygen pressure ignition without igniting.
9. Pressure relief devices should meet stipulated operating parameters.
By properly using valves that meet performance standards, the safe use of gas cylinders can be effectively ensured. Users should regularly inspect and maintain gas cylinder valves to ensure their performance meets requirements.
Post time: Aug-29-2023