Overview of Chemical Seal Device CSB
Chemical Seal Device CSB is a specialized sealing component used to isolate corrosive media from the external environment, widely applied in chemical, pharmaceutical, water treatment, and other process industries. Its core function is to extend the service life of instruments and pipeline connectors while ensuring that process media do not leak.
This manual is intended for engineering technicians and procurement personnel, providing structural description, parameter selection, installation steps, and maintenance recommendations for the CSB chemical seal device, facilitating rapid on-site implementation.
Manual Download Entry
To obtain the complete Chemical Seal Device CSB Chinese Manual, click the file below to download, which includes detailed dimension drawings, material tables, and installation diagrams.
Download Chemical Seal Device CSB Chinese Manual.pdf
Structural Composition and Working Principle
Main Structural Components
- Seal body: made of corrosion-resistant alloy or PTFE material, directly contacting the process medium.
- Isolation diaphragm: separates the medium from external sensing elements, preventing corrosion and clogging.
- Connection flange: provides standard interfaces for easy connection to pipelines or instruments.
- Filling fluid: transmits pressure signals to ensure measurement accuracy.
Working Principle
When the process medium pressure acts on the isolation diaphragm, the diaphragm undergoes slight displacement, transmitting pressure through the filling fluid to the measuring element. This process achieves the dual functions of medium isolation and pressure transmission, thereby preventing corrosive media from directly contacting the instrument interior.
Key Technical Parameters
The table below lists common technical parameters of the CSB chemical seal device for selection reference. Actual values shall be subject to the manual supplied with the product.
| Parameter Item | Typical Range | Description |
|---|---|---|
| Applicable pressure | 0~2.5 MPa | High-pressure type required beyond range |
| Applicable temperature | -20~150 ℃ | High-temperature diaphragm required for high temperatures |
| Diaphragm material | PTFE, Hastelloy, 316L | Select according to medium corrosiveness |
| Connection method | Flange, thread | Match according to on-site interface |
| Protection rating | IP65 and above | IP67 recommended for outdoor or humid environments |
Selection Points
Selection by Medium Characteristics
- Strongly corrosive media: prioritize PTFE or Hastelloy diaphragms.
- High-viscosity media: recommend increasing diaphragm diameter to avoid clogging.
- Media containing particles: need to add flushing ports or use flat diaphragm structures.
Selection by Operating Conditions
- When temperature exceeds 150℃, a high-temperature chemical seal device should be selected.
- For occasions with frequent pressure fluctuations, a damping device is recommended.
- For vacuum conditions, the airtightness level of the seals must be confirmed.
Installation Steps
- Confirm the pipeline has been depressurized and drained, and wear protective gloves and goggles.
- Inspect the appearance of the CSB seal device to confirm the diaphragm is not damaged and the interfaces are not deformed.
- Tighten the flange bolts symmetrically and evenly according to the torque requirements in the manual.
- Connect the filling fluid pipeline and remove internal air bubbles.
- Slowly increase pressure to the working pressure and check for leaks at all connections.
- After confirming no leaks, connect the measuring instrument and record the initial reading.
Maintenance and Care
Routine Inspection
- Check the sealing surface weekly for signs of leakage.
- Check the filling fluid level and color monthly, and replace promptly if abnormal.
- Calibrate pressure transmission accuracy quarterly.
Common Fault Handling
- Reading drift: mostly due to filling fluid leakage or diaphragm deformation, requiring diaphragm replacement.
- Interface leakage: check bolt torque and sealing gasket, replace gasket if necessary.
- Slow response: may be due to diaphragm clogging, requiring disassembly, cleaning, or replacement.
Common FAQ
Can the CSB chemical seal device be used in vacuum systems?
Yes, but a vacuum-specific model must be selected, and the stability of the diaphragm and filling fluid under negative pressure must be confirmed.
What should be done if the parameters in the manual are inconsistent with the actual product?
Please refer to the CSB Chinese Manual supplied with the product, or contact the supplier to verify batch information.
Does it support custom interfaces?
Most manufacturers support customization of flanges, threads, and other interfaces. When purchasing, pipeline specifications and medium parameters must be provided.