Procedure for Ensuring Proper Sealing of Aerosol Valves
| Department | Aerosol |
|---|---|
| SOP No. | SOP/Aerosol/188/2025 |
| Supersedes | SOP/Aerosol/188/2022 |
| Page No. | Page 1 of Y |
| Issue Date | 06/02/2025 |
| Effective Date | 16/02/2025 |
| Review Date | 06/02/2028 |
1. Purpose
The purpose of this Standard Operating Procedure (SOP) is to define a systematic approach for ensuring proper sealing of aerosol valves to prevent leakage, maintain product integrity, and comply with industry regulations.
2. Scope
This SOP applies to all aerosol products undergoing valve crimping, sealing, and integrity testing in the manufacturing facility.
3. Responsibilities
- Production Team: Responsible for setting up and operating the crimping equipment.
- Quality Assurance (QA) Team: Responsible for inspecting and verifying sealing quality.
- Maintenance Team: Responsible for calibration and maintenance of crimping machines.
- Quality Control (QC) Team: Responsible for conducting leak and pressure tests.
4. Accountability
The Production Manager is accountable for ensuring proper valve sealing and compliance with sealing specifications.
5. Procedure
5.1. Preparation for Sealing
- Ensure that the crimping machine is calibrated before each batch.
- Verify that valves and actuators are correctly positioned.
- Document machine setup details in the Crimping Setup Log (Annexure-1).
5.2. Crimping and Sealing Process
- Secure the aerosol can under the crimping head.
- Adjust crimping parameters according to valve specifications.
- Engage the crimping machine to form a proper seal.
- Record crimping parameters in the Valve Sealing Log (Annexure-2).
5.3. Leak and Pressure Testing
- Perform pressure testing
to ensure airtight sealing.
Conduct a water bath test to detect any leaks.
Record test results in the Sealing Integrity Test Log (Annexure-3).
5.4. Inspection and Defect Management
- Inspect crimping quality under magnification.
- Segregate defective cans for rework or rejection.
- Document defects in the Valve Defect Log (Annexure-4).
5.5. Corrective Actions
- Investigate root causes for crimping failures.
- Implement corrective actions such as recalibrating the crimping machine.
- Record corrective measures in the Corrective Action Log (Annexure-5).
6. Abbreviations
- GMP: Good Manufacturing Practice
- QA: Quality Assurance
- QC: Quality Control
- SOP: Standard Operating Procedure
7. Documents
- Crimping Setup Log (Annexure-1)
- Valve Sealing Log (Annexure-2)
- Sealing Integrity Test Log (Annexure-3)
- Valve Defect Log (Annexure-4)
- Corrective Action Log (Annexure-5)
8. References
- Good Manufacturing Practice (GMP) Guidelines
- ISO 9001 – Quality Management Systems
- FDA Aerosol Product Sealing Guidelines
9. SOP Version
Version: 2.0
10. Approval Section
| Prepared By | Checked By | Approved By | |
|---|---|---|---|
| Signature | |||
| Date | |||
| Name | |||
| Designation | |||
| Department |
11. Annexures
Annexure-1: Crimping Setup Log
| Machine ID | Setup Date | Checked By | Calibration Status |
|---|---|---|---|
| CM-105 | 07/02/2025 | Rahul Mehta | Pass |
Annexure-2: Valve Sealing Log
| Batch No. | Crimp Diameter (mm) | Operator | Status |
|---|---|---|---|
| BN-205 | 12.5 | Priya Sharma | Pass |
Annexure-3: Sealing Integrity Test Log
| Batch No. | Test Type | Results | Checked By |
|---|---|---|---|
| BN-206 | Water Bath | No Leakage | QA Team |
Annexure-4: Valve Defect Log
| Batch No. | Defect Type | Percentage Defective | Reviewed By |
|---|---|---|---|
| BN-207 | Incomplete Crimp | 1.2% | QA Team |
Annexure-5: Corrective Action Log
| Issue Identified | Corrective Action | Implementation Date | Approved By |
|---|---|---|---|
| Crimping Pressure Low | Adjusted Machine Settings | 08/02/2025 | Anjali Sharma |
12. Revision History:
| Revision Date | Revision No. | Revision Details | Reason for Revision | Approved By |
|---|---|---|---|---|
| 01/01/2024 | V 1.0 | Initial Release | First Issue | Anjali Sharma |
| 01/01/2025 | V 2.0 | Updated sealing integrity tests | GMP Compliance | Anjali Sharma |