When choosing a gas fire suppression system, many customers ask whether a pressure of 42 bar or 50 bar is safe and suitable for the equipment.
In practice, 42 bar and 50 bar are common configurations in HFC-227ea gas fire suppression system design, especially for solutions that require long pipe runs and stable performance. However, the deciding factor is not just the pressure level, but also the quality of the cylinder and the manufacturing technology behind it.
S-TEC VINA’s cylinders are seamless (one-piece), which increases their high-pressure capability and impact resistance and keeps them stable throughout service. With this construction, the cylinders fully handle 42 bar or 50 bar operating pressures while remaining safe and durable over the long term.
Meanwhile, many suppliers on the market claim that 25 bar is enough to meet the standard, which lets them cut input costs. In terms of the standard, that is not wrong. In practice, however, it is a different story. Most products using welded cylinders have limited long-term pressure resistance, especially at the weld seams – where risks easily arise under high pressure or continuous stress over time.
This leads to a reality: choosing a lower pressure is not always about technical optimisation – sometimes it is about staying within the equipment’s limits. For systems that require high stability and reliability, a higher pressure (such as 42 bar) brings clear operational advantages.
42/50 bar is entirely suitable from a technical standpoint, but it must be matched by cylinders of corresponding quality. That is why S-TEC VINA uses seamless cylinders: to ensure stable operation at high pressure, meeting not only the standard but also long-term real-world requirements.
If you are weighing up pressure configurations or want to re-evaluate an existing system, leave a comment or contact S-TEC VINA for detailed technical advice.
*************************
S-TEC VINA – Vietnam’s leading manufacturer of gas fire suppression systems
Factory address: Lot CN03, Dong Van IV Industrial Park, Le Ho Ward, Ninh Binh Province
Representative office: Tower C5, D’Capitale, 224 Tran Duy Hung Street, Yen Hoa Ward, Hanoi
Hotline: 0386 119 114
Email: info@stecvina.com
Website: https://stecvina.com/
EN 
VI 
