How To Choose Threaded Valves And Fittings Suitable For Industrial Needs?

In industrial production, threaded valves and fittings are vital components, and they play the role of fluid control, connection and sealing. Whether in the petrochemical, food processing or water treatment industries, choosing suitable threaded valves and fittings is crucial to ensure the stable operation of the system and improve production efficiency. But faced with a wide variety of threaded valves and fittings on the market, how to choose products that suit your industrial needs? Today, let's talk about this topic to help you make a wise choice.

 

1. Clarify the use environment and medium

The first step in selecting threaded valves and fittings is to understand the environment and medium in which they will be used. Different industries and application scenarios have different requirements for valves and fittings. For example:

 

Chemicals and corrosive media: If the pipeline system needs to transmit corrosive media such as acids, alkalis, and salts, then you need to choose corrosion-resistant materials, such as stainless steel 316, Hastelloy, etc. These materials can effectively resist the erosion of chemical media and ensure the service life of valves and fittings.

 

Food and beverage industry: In this environment, hygiene and cleanliness are particularly important. It is necessary to select valves and fittings that meet hygiene standards, usually made of stainless steel 304 or 316L materials, with smooth surface treatment to avoid bacteria and dirt accumulation.

 

High temperature and high pressure environment: If the working environment involves the transmission of high temperature or high pressure fluids, it is necessary to select valves and fittings with high temperature and pressure resistance, such as high-strength stainless steel or alloy materials.

 

2. Choose the right material

The material is the core factor when choosing threaded valves and fittings. Valves and fittings of different materials have different characteristics such as corrosion resistance, high temperature resistance and strength. Common materials include:

 

Stainless steel: Stainless steel valves and fittings are widely used in food, beverage, pharmaceutical, chemical and other industries. Due to their excellent corrosion resistance, high temperature resistance and strong mechanical strength, they are suitable for a variety of media.

 

Brass: Brass materials have good corrosion resistance and are suitable for fluid control of media such as water and gas. But its high temperature resistance is poor and it is not suitable for high temperature environments.

 

Plastics (such as PVC, CPVC): Plastic valves and fittings are mainly used in low-temperature, low-pressure water treatment, chemical transportation and other occasions because of their light weight, low price and corrosion resistance.

 

3. Consider sealing performance

Sealing performance is very important for the selection of valves and fittings, especially in applications that require tight sealing. The sealing of threaded valves and fittings mainly depends on sealing rings or gaskets. Common sealing materials are:

 

PTFE (polytetrafluoroethylene): PTFE material has excellent chemical stability and high temperature resistance, suitable for most media, especially for highly corrosive media.

 

EPDM (ethylene propylene diene monomer): EPDM material is resistant to high temperature, water and steam, suitable for water treatment and food industries, but not suitable for oils and certain chemicals.

 

Viton: Viton material has excellent high temperature and corrosion resistance and is often used in high temperature chemical environments.

 

According to different working media and temperature requirements, choose the right sealing material to ensure the sealing and leakage prevention capabilities of the pipeline system.

 

4. Choose the right connection method

There are many ways to connect threaded valves and fittings, the most common of which are internal threads and external threads. The selection should be based on the connection requirements of the pipeline:

 

Internal thread connection: This connection method is often used in situations where the inner end of the pipeline needs to be connected, and is usually suitable for small valves and pipeline accessories.

 

External thread connection: External thread connection is used on the outside of the pipeline, usually for valves and pipe fittings fixed by bolts. The connection is relatively firm and suitable for environments with higher pressure.

 

Choose a suitable connection method according to the design of the pipeline system to ensure that the connection is stable and easy to install and disassemble.

 

5. Consider valve type and function

Different types of threaded valves are suitable for different fluid control needs. Common types of threaded valves are:

Ball valve: Ball valve is suitable for situations where fluids need to be opened and closed quickly, and is often used for flow control of liquids and gases.

 

Globe valve: Globe valve is mainly used for precise flow regulation and is widely used in applications that require fine control of fluid flow.

 

Check valve: Check valve is used to prevent fluid backflow and is widely used in pump stations and pipeline systems.

 

Gate valve: Gate valve is used to completely open or close the flow of fluids, suitable for situations that need to be opened or closed for a long time.

 

Choosing threaded valves and pipe fittings suitable for industrial needs is not a simple matter. It requires comprehensive consideration of multiple factors such as material, sealing performance, connection method, valve type, etc. Choose the appropriate valve type according to actual needs to ensure that it can meet the accuracy and efficiency requirements of fluid control. When purchasing, you should also choose suppliers with good reputation and excellent service to ensure product quality and after-sales service to avoid problems later.

I hope that the above sharing can help you choose the most suitable threaded valves and pipe fittings!