What is the difference between low lift safety valve and fall lift safety valve?
The low lift safety valve is a very sensitive valve with a tiny actuating pressure. It directs the working medium under low pressure into the valve, and when the pressure exceeds the set value, the valve is opened by the tiny start-up pressure, directing the excess overpressure medium to the outside and stabilizing the system pressure. On the other hand, the fall lift safety valve realizes the opening and closing of the valve by pushing the piston in the spring chamber, and its starting pressure is relatively high.
Overview
Differences in starting pressures:
Low lift safety valves have lower actuation pressures, usually in the range of 10% to 30% of the specified pressure, and are suitable for low-pressure scenarios;
Fall lift safety valves have higher actuation pressures, usually between 70% and 100% of the specified pressure, and are suitable for high-pressure scenarios.
Differences in response speeds:
Low lift safety valves have a faster response time and are suitable for systems that require a fast response time;
Fall lift safety valves have a slower response time.
Differences in applicable media:
Low lift safety valves are usually applied to gas media, suitable for pressure fluctuations in the environment;
Fall lift safety valves are applied to liquid media, suitable for pressure changes in a more stable environment.
Differences in application scenarios:
Low lift safety valves are commonly used in pressure reduction systems, pharmaceuticals, beverages, mineral water and small cooling systems;
Fall lift safety valves are suitable for compressors, closed systems, oil refining, chemical industry, iron and steel, power stations and other industrial fields.
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