Views: 0 Author: J-VALVES Publish Time: 2022-05-27 Origin: Site
In the application field of J-VALVES FULL LINED FLUORINE BUTTERFLY VALVES, the selection of sealing materials is of crucial importance, as it directly affects multiple aspects such as the sealing performance, service life, and applicable working conditions of the BUTTERFLY VALVES. PTFE (Polytetrafluoroethylene) seals and EPDM (Ethylene Propylene Diene Monomer) gaskets are two commonly used materials. In order to gain an in-depth understanding of the differences in their performance, we conducted a specialized comparison experiment.
PURPOSE OF THE EXPERIMENT
Through a series of rigorous experimental tests, compare the performance of PTFE seals and EPDM gaskets in different key performance indicators, so as to provide a reference basis for selecting more suitable sealing materials for J-VALVES FULL LINED FLUORINE BUTTERFLY VALVES in practical applications.
EXPERIMENTAL SAMPLES AND TESTING EQUIPMENT
We selected PTFE seals and EPDM gaskets that meet the standard specifications and installed them on the samples of J-VALVES FULL LINED FLUORINE BUTTERFLY VALVES of the same model for testing. The testing equipment used includes high-precision pressure testing instruments, temperature control boxes, and experimental devices for simulating different medium environments, etc., to ensure the accuracy and reliability of the experimental data.
PERFORMANCE COMPARISON EXPERIMENT AND RESULTS
The following is the comparison of PTFE seals and EPDM gaskets in several important performance aspects:
PERFORMANCE INDICATORS | PTFE SEALS | EPDM GASKETS |
Temperature Resistance | It can maintain good performance within a wide temperature range from -190 °C to 260 °C, can adapt to extreme high and low temperature environments, and has strong thermal stability. | The applicable temperature range is generally between -40 °C and 150 °C. When exceeding this range, the performance will be greatly affected, and the temperature resistance range is relatively narrow. |
Corrosion Resistance | It has excellent tolerance to the vast majority of chemical media, such as strong acids, strong alkalis, and organic solvents. It hardly reacts with various chemical substances and has excellent chemical stability. | It has a certain tolerance to some common non-oxidizing acids, alkalis, and some polar solvents. However, when facing corrosive media such as strong oxidizing acids, it is prone to problems such as aging and corrosion. |
Sealing Performance | It has a compact texture and a smooth surface. Under correct installation and suitable working conditions, it can achieve an extremely low leakage rate, has excellent sealing effect, and the sealing performance remains relatively stable during long-term use. | It has good sealing performance and can effectively prevent the leakage of media under normal pressure and temperature environments. However, as the usage time prolongs and in some complex working conditions, the decline in the sealing performance may be relatively large. |
Elasticity and Compression Resilience | It has relatively low elasticity but a certain degree of flexibility, can adapt to a certain degree of deformation, and can better restore to its original state after the pressure is released to ensure the sealing effect. | It has better elasticity and can quickly fill the sealing gap when compressed, providing a good initial sealing force. However, after being subjected to large pressure for a long time, the attenuation of compression resilience is relatively obvious. |
Service Life | Due to its excellent comprehensive factors such as chemical stability, temperature resistance, and good wear resistance, it has a long service life under normal use and maintenance conditions. | The service life is greatly affected by the usage environment. Especially under harsh working conditions such as high temperature and strong corrosion, the aging speed is relatively fast, and the overall service life is relatively shorter than that of PTFE seals. |
CONCLUSION
It can be seen from this performance comparison experiment that PTFE seals and EPDM gaskets each have their own advantages and applicable scenarios. PTFE seals are more suitable for use under relatively harsh working conditions such as high temperature and strong corrosion, which can ensure the long-term stable sealing performance and reliable operation of the butterfly valves. While EPDM gaskets can also play a good sealing role in conventional temperature and pressure environments where the corrosiveness requirements for media are not particularly high, relying on their good elasticity and initial sealing ability.
In the practical application of J-VALVES FULL LINED FLUORINE BUTTERFLY VALVES, it is necessary to comprehensively consider specific working conditions, medium characteristics, and requirements for sealing performance and other factors to reasonably select PTFE seals or EPDM gaskets, so as to maximize the functional advantages of J-VALVES FULL LINED FLUORINE BUTTERFLY VALVES and ensure the efficient and stable operation of fluid control links in industrial production and other fields.
