Which type of safety valve is used in high pressure and low pressure?

In fluid control systems, the role of safety valves cannot be ignored. They ensure that the system can operate safely and effectively under abnormal pressure. But how to choose the right safety valve in high and low pressure environments? I will give you an in-depth analysis of this issue and discuss the application of different safety valve types in high and low pressure systems and their key factors. Safety valve, as an automatic valve, can automatically open and discharge fluid to reduce system pressure when the system pressure exceeds a preset value. In high-pressure and low-pressure systems, the selection of safety valves is particularly important. This is not only related to the safe operation of the system, but also involves the smooth progress of the entire production process. Below, I will delve into the selection and application of safety valves in high and low pressure systems.

1. Selection of safety valves in high-pressure systems

In high-pressure systems, due to high pressure and large fluid kinetic energy, the selection of safety valves is particularly critical. Here are some types of safety valves suitable for high pressure systems:

Spring-type safety valve: The opening pressure is controlled by the compression force of the spring. In high-pressure systems, spring-type safety valves need to have strong spring force and good sealing performance. In addition, its compact structure and rapid action allow it to quickly respond and discharge fluid in a short time.

Pilot safety valve: A small pilot valve is used to control the opening of the main valve. Pilot-operated safety valves have the advantages of high adjustment accuracy and sensitive action in high-pressure systems. At the same time, due to the existence of the pilot valve, the opening pressure of the main valve can be accurately adjusted to adapt to different high-pressure environments.

Rupture disc safety valve: Discharges fluid by rupturing a thin metal disc when the withstand pressure is exceeded. In high-pressure systems, bursting disc safety valves have the advantages of simple structure and reliable action. However, once the rupture disc ruptures, it needs to be replaced with a new one to restore normal operation of the system, high temperature gate valves.

2. Selection of safety valves in low-pressure systems

In low-pressure systems, although the pressure is relatively low, it is also crucial to select a suitable safety valve. Here are some safety valve types suitable for low pressure systems:

Gravity safety valve: Use the gravity of a weight or weight to control the opening pressure. In low-pressure systems, gravity safety valves have the advantages of simple structure and reliable operation. However, because its opening pressure is limited by gravity, system requirements may not be met at higher pressures.

Lever safety valve: Amplify the opening torque to control the opening pressure through the lever principle. In low-pressure systems, lever-type safety valves have the advantages of wide adjustment range and sensitive action. In addition, due to its structural characteristics, it can prevent the valve from failing due to blockage to a certain extent, bronze flanged gate valve.

Spring diaphragm safety valve: combines spring and diaphragm elements to control opening pressure. In low-pressure systems, spring diaphragm safety valves have the advantages of high adjustment accuracy and smooth action. At the same time, due to its compact structure and light weight, it is widely used in some occasions with strict space requirements.

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3. Here are some of my suggestions:

When choosing a safety valve for high and low pressure systems, I need to consider a variety of factors, such as system pressure, fluid properties, working conditions, etc.

In high-pressure systems, priority is given to using spring-loaded safety valves or pilot-operated safety valves to ensure the safety and stability of the system. When selecting, attention should be paid to factors such as the material of the valve, sealing performance, strength and fatigue life of the spring, api602 forged gate valve.

In low-pressure systems, you can choose gravity safety valves, lever safety valves or spring diaphragm safety valves. When selecting, the appropriate valve type and size should be determined based on the system's working pressure and flow requirements. At the same time, pay attention to the valve's adjustment range, action sensitivity, and prevention of clogging and other performance characteristics.