What is the difference between PTFE lined valves and rubber lined valves

In today's industrialized era, with the development of some enterprises PTFE lined valve There is a high demand for rubber lined valves. So what is the difference between these two types of valves that have outstanding anti-corrosion performance? Let's take a look at the differences between these two types of valves.
Let's take a look at PTFE lined valves first. PTFE lined valves are known as plastic, which is a corrosion-resistant material. Therefore, PTFE lined valves can withstand various high concentrations of sulfuric acid and hydrochloric acid Wait, work in a high-intensity corrosive environment. However, this type of valve is greatly limited by temperature, as high temperatures can cause deformation of the PTFE lining material, which can lead to leakage of the medium and cause dangerous accidents. It is recommended to use it at a temperature between -50 degrees Celsius and 150 degrees Celsius.
Rubber lined valves are a type of valve widely used in the petrochemical industry and are highly favored by some engineering projects. This is because the rubber lined valve has a dual function of switching and regulating flow, which does not affect the flow rate of the medium during use. In addition, the surface of this valve chamber is covered with various rubbers, which can adapt to different working environments.
In addition, these two types of valves should be stored in a dry place during storage, avoiding direct sunlight and rain, as well as being close to sources of fire to prevent deformation of the valve lining.
The above is the difference between PTFE lined valves and rubber lined valves. I hope it can be helpful in distinguishing between these two types of valves.

Precautions for the application of PTFE lined valves

Fluorine lined flange butterfly valve D341F46-16C