What type of gate valve is used in low temperature and low pressure service?

Gate valve type selection under low temperature and low pressure conditions. I will discuss in depth how to choose the appropriate gate valve type to ensure the safety and efficiency of industrial processes under low temperature and low pressure conditions. I will analyze the characteristics, advantages and limitations of different gate valves in detail, and use practical cases to demonstrate their application in low temperature and low pressure environments.

1. Background and challenges of low-temperature and low-pressure working conditions

In chemical, petroleum, natural gas and various other industrial fields, low temperature and low pressure conditions are common operating environments. In this case, the fluid usually needs to be controlled under strict temperature and pressure conditions. Therefore, choosing the right gate valve is crucial to ensuring the safety and efficiency of your process, forged ball valve.

2. Basic types and characteristics of gate valves

Parallel Gate Valve: The design feature of a parallel gate valve is that its gate plate is parallel to the direction of the flow. It has good fluid control characteristics and is suitable for occasions requiring frequent switching. However, in low temperature environments, its sealing performance may be affected.

Wedge gate valve: The gate plate of the wedge gate valve is designed in a wedge shape, which can provide excellent sealing performance. It is typically used in applications that require tight control of fluids, such as oil and gas transmission. However, under low pressure conditions, its operating torque may be larger, low temperature ball valves.

Resilient seat gate valve: Resilient seat gate valve uses elastic sealing material, which can provide reliable sealing performance under low temperature and low pressure conditions. It combines the advantages of parallel gate valves and wedge gate valves and is suitable for a variety of industrial applications.

3. Considerations for selecting gate valves under low temperature and low pressure conditions

Sealing performance: In low temperature environments, the selection of sealing materials is crucial. Sealing materials with excellent cold resistance should be selected to ensure the sealing reliability of the valve under extreme temperatures.

Operating torque: Under low pressure conditions, the operating torque of the gate valve may be affected. Therefore, when selecting a gate valve, the design of its actuator should be considered to ensure normal operation under low pressure conditions.

Material selection: Under low temperature and low pressure conditions, the selection of valve materials is equally important. Materials with good low-temperature toughness and corrosion resistance should be selected to ensure the reliability of the valve in harsh environments, duplex stainless steel ball valve.

Fluid Control Characteristics: Select a gate valve type with good fluid control characteristics based on specific application needs. For example, where frequent switching is required, a parallel gate valve may be a better choice.

4. Actual case analysis and application scenarios

Oil and gas transportation: During the oil and gas transportation process, the temperature and pressure of the fluid need to be strictly controlled. Wedge gate valves are often used in such applications due to their excellent sealing properties. However, in the low pressure section, elastic seat gate valves may be considered to reduce operating torque.

Chemical production: Chemical production processes involve a variety of corrosive media and extreme temperature conditions. In this case, the elastic seat gate valve becomes an ideal choice due to its good sealing performance and corrosion resistance.

Pharmaceutical and food industry: In the pharmaceutical and food industry, the requirements for hygiene and safety are very high. Parallel gate valves are usually used in these industries due to their simple structure and easy cleaning. However, under low temperature conditions, sealing materials with better cold resistance need to be considered, carbon steel gate valves.

Electric power industry: Boiler feed water systems and cooling water systems in the electric power industry need to operate under strict temperature and pressure conditions. In this case, consider using a resilient seat gate valve that can provide reliable sealing performance under low temperature and low pressure conditions.

5. The following is my summary

Through an in-depth discussion on the selection of gate valve types under low temperature and low pressure conditions, we hope to help everyone better understand and apply this important industrial product. With the advancement of technology and changes in market demand, valve manufacturers and users need to constantly pay attention to the development of new technologies and new standards to ensure that valve products can adapt to changing application environments and needs.