The difference between safety valve and pressure reducing valve
We often wonder about the functional differences between pressure reducing valves and safety valves. Acctually, both of them can regulate pipeline pressure, but the differences are very significant. Therefore, they must be used correctly to ensure the safety of pipelines and equipment.
The main differences between safety valves and pressure reducing valves lie in their functional purpose, working principle, working state, application scenarios, structural types, installation requirements, and maintenance and inspection.
1. Functional purpose: Safety valves are mainly used for overpressure protection to prevent equipment damage due to excessive pressure; The pressure reducing valve is used to reduce pressure and maintain stable outlet pressure.
2. Working principle: The safety valve releases pressure by opening and closing the valve disc, usually opening when the pressure exceeds the set value; The pressure reducing valve adjusts the pressure by changing the throttling area and is usually in an open state, working continuously.
3. Working state: The safety valve is usually in the closed state and only opens when the pressure exceeds the set value; The pressure reducing valve is usually in the open state and continues to work.
4. Application scenario: Safety valves are suitable for equipment that requires overpressure protection, such as boilers, pressure vessels, compressors, etc; Pressure reducing valves are suitable for systems that require stable pressure output, such as residential water supply, industrial process control, etc.
5. Structural types: Safety valves include spring type, lever type, and pulse type, etc; Pressure reducing valves come in diaphragm, spring, and piston types.
6. Installation requirements: Safety valves usually need to be installed vertically and have unobstructed outlets; Pressure reducing valves usually need to be installed horizontally and ensure no resistance downstream.
7. Maintenance and Inspection: Safety valves require regular pressure testing and sealing checks to ensure they can function properly in emergency situations; Pressure reducing valves require regular inspection and maintenance to ensure the accuracy of pressure regulation.
