High Pressure SF₆ Gas — pressure-rated supply for demanding duty
High Pressure SF₆ Gas needs careful specification because sulfur hexafluoride liquefies near room temperature. Its critical point is about 45.6 °C and 37.6 bar, so a cylinder stores liquid below that temperature and pressure falls as the gas is drawn off. REAL GAZ supplies cylinders sized and filled with these properties in mind.
In service equipment SF₆ typically operates at a few bar absolute, so reducers and density monitors are an important part of the system.
In service equipment SF₆ typically operates at a few bar absolute, so reducers and density monitors are an important part of the system.
REAL GAZ supplies this product according to EN 1964, ISO 9809 and IEC 60376, suitable for industrial and laboratory pressure applications.
🏭 Where High Pressure SF₆ Is Used
- ⚡ Switchgear filling — gas is transferred from cylinders to compartments through reducers that set the rated filling pressure;
- 🧪 Pressure vessel tests — dielectric and leakage experiments in test chambers up to several bar;
- 🛠️ Recovery carts — compressors move gas between cylinders and equipment during maintenance;
- 🔍 Leak testing — pressurised SF₆ or SF₆/nitrogen mixtures reveal small leaks with sniffer detectors.
💡 Why Choose REAL GAZ for Pressurised SF₆
- ✅ Rated hardware — cylinders and valves carry pressures well above normal working conditions;
- 🧪 Correct filling ratio — controlled filling leaves room for thermal expansion of the liquid;
- 🎯 Regulator advice — we help select stainless or brass reducers that avoid freezing and flow limits;
- 🔒 Temperature guidance — storage and transport advice avoids over-pressurisation in hot climates;
- 📄 Certificate of Analysis (CoA) — supplied with every order
🔬 Quality Control & Safety
- hydrostatic test verification;;
- net-weight control against filling ratio;;
- regulator and valve pressure checks;;
- full leak inspection prior to dispatch.
Fast withdrawal cools the liquid and lowers pressure; gentle flow rates or a warm-water bath keep delivery stable.
Cylinders comply with ADR / UN transport rules and relevant EN/ISO standards.
📦 Working with Pressure
Pressure behaviour is the key difference between SF₆ and permanent gases such as helium. The gauge shows only vapour pressure while liquid remains, so weighing is the dependable way to know how much gas is left. High-pressure hoses and fittings must be rated well above the cylinder pressure at the highest storage temperature, and the downstream equipment must be protected by relief devices.
- do not use the pressure gauge as a contents indicator;
- protect cylinders from direct sunlight;
- fit pressure relief on downstream equipment;
- depressurise lines before disconnecting.
In hot climates, extra care is warranted. A cylinder left in a closed vehicle can reach temperatures far above normal, and the pressure of liquefied SF₆ rises steeply as it approaches its critical temperature. REAL GAZ delivers in shaded, ventilated vehicles and advises customers on storage rooms.
⚙️ Trusted Gas Solutions
Customers in Azerbaijan, Turkey, Georgia, Uzbekistan and the USA can rely on REAL GAZ for High Pressure SF₆ Gas supplied with the right cylinder, valve and written handling advice.
REAL GAZ — pressure managed, risk reduced.