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PEEK Spring Engaged Seal
PEEK (polyetheretherketone) chemical valve sealing rings play an important role in chemical valves. The following are the main functions of PEEK chemical valve sealing rings.
Corrosion resistance
PEEK has excellent corrosion resistance and can resist the erosion of various chemical media. The use of PEEK sealing rings in chemical valves can effectively prevent medium leakage and interaction with the medium.
High-temperature performance
PEEK has exquisite high-temperature stability and can maintain its mechanical properties and sealing properties in high-temperature environments. It can withstand the influence of high-temperature media and ensure the normal operation of chemical valves.
Low coefficient of friction
PEEK sealing rings have a low friction coefficient, which reduces valve operating force and wear. It provides smooth valve operation and extends valve life.
Wear resistance
PEEK sealing rings have good wear resistance and can withstand long-term use and friction. It can provide reliable sealing performance in chemical valves and maintain its performance even under frequent operation and high-pressure conditions.
Dimensional stability
PEEK sealing rings have a low thermal expansion coefficient and exceptional dimensional stability, and can maintain their sealing performance when temperature changes. It can adapt to working environments at different temperatures and ensure reliable sealing of the valve.
Why chosse PEEK used in chemical valves
Several reasons for choosing PEEK sealing rings for chemical valves
In the chemical industry, various corrosive media are often encountered, such as acids, alkalis, solvents, etc. PEEK sealing rings can effectively resist the erosion of these chemical substances, thereby ensuring reliable sealing of the valve.
In chemical engineering processes, it is frequently necessary to handle high-temperature media. The PEEK sealing ring can withstand the impact of high temperatures without softening or cracking, ensuring the normal operation of the valve.
PEEK seals have a low coefficient of friction, reducing valve operating forces and wear. This helps reduce the force required to operate the valve, extends valve life, and provides smooth valve operation.
In chemical processes, valves may need to be operated frequently and subjected to certain pressures. PEEK seals maintain their performance and provide reliable sealing performance.
PEEK sealing rings have a low thermal expansion coefficient and excellent dimensional stability, and can still maintain their sealing performance when temperature changes. This enables the PEEK sealing ring to adapt to working environments with different temperatures and ensure reliable sealing of the valve.
| PEEK | |||
| PHYSICAL PROPERTIES | TEST METHOD | UNITS | TYPICAL VALUE |
| Density | ISO1183,Crystalline | g/cm3 | 1.30 |
| Glass transition temperature | ISO11357 | °C | 143 |
| Melting Point | ISO11357 | °C | 343 |
| Heat Deflection Temperature | ISO75-f,1.8MPa | °C | 152 |
| Thermal Conductivity | ISO22007-4,23°C | Wm-1K-1 | 0.29 |
| Melt index | ISO1133,380°C,5kg | g/10min | 10 |
| Shore D Hardness | ISO868,23°C | - | 85 |
| WaterAbsorptionby immersion(3.2mm thickTensileBar) | ISO62-1,24h,23°C | % | 0.07 |
| Equilibrium,23°C | % | 0.4 | |
Others knowledge
Chemical valves play a key role in chemical pipeline transportation, including the following aspects:
Flow control
Chemical valves can be used to regulate the flow of fluids in pipelines, by opening or closing the valve or adjusting the opening of the valve to control the flux of the fluid. This is very important for scenarios where flow control is required in the chemical production process, such as adjusting the feed flow in the reactor, adjusting the fluid velocity in the process, etc.
Pressure regulation
Chemical valves can also be used to regulate pressure in pipelines. By adjusting the opening of the valve or using a pressure regulating valve, the pressure level in the pipeline can be controlled to adapt to different process requirements and ensure the safe operation of the pipeline system.
Fluid cutoff
Chemical valves can be used to cut off the flow of fluids in pipelines. When maintenance, equipment replacement, or emergency shutdown is required, closing the valve can effectively cut off the fluid flow and avoid leaks and accidents.
Fluid splitting and merging
Chemical valves can be used to divert and merge fluids in pipeline systems. By using a multichannel valve or a combination of multiple single-channel valves, fluids can be distributed to different pipes or combined from different pipes to meet complex process requirements.
Fluid Conditioning and Isolation
Chemical valves can also be used to regulate and isolate fluids. By using regulating valves or stop valves, the flow of fluid can be precisely controlled to meet the requirements of different process parameters. At the same time, the closed state of the valve can also isolate the fluid and prevent mixing or cross-contamination between different media.
To sum up, chemical valves play important roles in flow control, pressure regulation, fluid cutting, fluid diversion and merging, fluid regulation, and isolation in chemical pipeline transportation. Its reasonable selection and correct application are crucial to the safe, stable, and efficient operation of the chemical production process.
Certification
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