"How to Choose a Globe Valve Correctly: A Guide to Types and Application Scenarios"

"How to Choose a Globe Valve Correctly: A Guide to Types and Application Scenarios"

1、 Overview

Globe valve is a commonly used type of valve, mainly used to cut off fluid in pipelines. The correct selection of shut-off valves is the key to ensuring the normal operation of pipeline systems. This guide will introduce you to how to correctly choose a shut-off valve, including its type and application scenario.

2、 The type of shut-off valve

1. Classified by valve structure:

a) Straight through globe valve: The fluid channel is straight through, with a simple structure and low flow resistance, making it widely used.

b) Angle globe valve: The fluid channel is at a 90 degree angle, occupying small space and suitable for situations with limited space.

c) Direct current globe valve: The fluid channel is straight and has a high flow resistance, making it suitable for situations with low opening and closing frequencies.

2. Classified by valve material:

a) Carbon steel globe valve: suitable for general industrial applications with media such as water, oil, steam, etc.

b) Stainless steel globe valve: suitable for environments with high cleanliness requirements, such as corrosive liquids, gases, chemicals, etc.

c) Fluorine lined globe valve: suitable for environments with corrosive chemicals, strong acids, strong alkalis, and other media.

3. Classified by driving method:

a) Manual shut-off valve: Control the valve opening and closing by manually rotating the valve stem, simple and easy to operate, suitable for low pressure and small diameter applications.

b) Electric globe valve: Automatic control is achieved by driving the valve stem to rotate through an electric motor, suitable for medium and high pressure, large diameter applications.

c) Pneumatic globe valve: It is driven by air pressure to rotate the valve stem, achieving automatic control, suitable for medium and high pressure, large diameter situations.

3、 Application scenarios of globe valves

1. Water supply system: used to cut off water sources, achieve system startup, shutdown, and maintenance.

2. Petrochemical industry: used to cut off various media, such as oil, gas, water, etc., to ensure production safety.

3. Thermal power generation industry: used to cut off media such as hot water and steam, ensuring the safe operation of boilers and thermal equipment.

4. Food and beverage industry: used to cut off media such as food and beverages, ensuring the hygiene of the production environment.

5. Pharmaceutical industry: used to cut off pharmaceutical raw materials, drugs, and other media to meet strict production requirements.

6. Environmental protection industry: used to cut off media such as sewage and sludge, and achieve the normal operation of environmental protection facilities.

4、 Precautions for selecting shut-off valves

1. Choose the appropriate valve material according to the properties of the medium (such as corrosiveness, temperature, pressure, etc.).

2. Choose the appropriate valve model according to the design pressure, design temperature, and diameter of the pipeline.

3. Consider the driving mode of the valve and choose manual, electric, or pneumatic shut-off valves based on site conditions and requirements.

4. Consider the installation position and direction of the valve to ensure its normal operation.

5. Choose valves produced by reputable manufacturers to ensure the quality and after-sales service of the valves.

In short, the correct selection of shut-off valves requires full consideration of the properties of the medium, design parameters of the pipeline, and application scenarios. I hope this guide is helpful to you.