SAFETY VALVE CALIBRATION – ENSURING ACCURATE, ABSOLUTELY SAFE OPERATION
The Industrial Equipment Safety Inspection Joint Stock Company (SIE) provides professional safety valve calibration services, strictly complying with TCVN, API, and ASME standards. With a team of experienced engineers and modern calibration equipment, the company ensures your safety valves operate accurately, remain stable, and meet all technical requirements.
1. When is safety valve calibration required?
- After new installation and before being put into operation.
- After repair, maintenance, or replacement of key components.
- When equipment shows a fault or operating parameters are suspected to be incorrect.
- On the periodic schedule set by relevant standards or required by the relevant authority.

2. Benefits of periodic calibration
- Prevents the risk of over-pressure, protecting the safety of people and equipment.
- Reduces wear and extends equipment service life.
- Ensures the system operates stably and continuously.
- Complies with technical standards and legal requirements.
3. Professional calibration process
- Inspect the external condition of the valve.
- Measure and adjust the opening/closing pressure to the required parameters.
- Check for tightness to ensure no leakage.
- Lead-seal the valve to lock in the calibrated settings.
4. Standards applied
- TCVN 7915-1:2009 (EN ISO 4126-1:2004) – Safety devices for protection against excessive pressure.
- API 527, API RP 576, API RP 520 – Inspection, ion, and installation of valves.
- ASME Section I, III, IV, VIII, XII, B31.1, B31.3 – Pressure vessels, boilers, and piping systems.
5. Commitments from SIE
- Officially designated and licensed by the Ministry of Labour, Invalids and Social Affairs.
- Accurate, transparent process, compliant with technical standards.
- Experienced engineering team, with on-site support.
- Reasonable cost, clear quotes, fast turnaround.
Please contact us for consultation and to receive a fast, accurate quote for safety valve calibration services.