Shell Gas Compressor Oil S3 PSN 220
Shell Gas Compressor Oil S4 PV 190 is an advanced synthetic lubricant specifically developed for use in reciprocating gas compressors operating in demanding industrial environments. The oil is formulated using polyalkylene glycol (PAG) base fluids and advanced additive technology to provide superior lubrication performance, improved equipment protection and extended service life. Its formulation is designed to maintain reliable lubrication across a wide range of gas compression applications involving hydrocarbon and industrial gases.
A key advantage of Shell Gas Compressor Oil S4 PV 190 is its ability to deliver extended maintenance intervals. Conventional mineral oils can experience viscosity loss when exposed to hydrocarbon gases due to gas solubility effects. Shell Gas Compressor Oil S4 PV 190 has significantly reduced hydrocarbon gas solubility compared with mineral oil-based lubricants. This characteristic helps maintain lubricant viscosity and film strength during operation, ensuring effective lubrication of piston rings, cylinder walls and packing components. By maintaining a stable lubricating film, the oil helps extend equipment service intervals and reduce maintenance costs.
The lubricant also provides outstanding wear protection. The strong lubricating film formed by the oil helps reduce friction and minimise wear between sliding surfaces within the compressor. This is particularly important for cylinder lubrication in reciprocating compressors where components operate under high pressure and continuous mechanical stress. The oil’s ability to maintain viscosity under gas exposure contributes to improved protection against corrosion and cylinder wear.
Shell Gas Compressor Oil S4 PV 190 also supports improved system efficiency. The enhanced lubrication performance allows lower cylinder feed rates compared with conventional compressor oils while maintaining effective protection of components. Reduced oil feed rates help minimise lubricant carryover into the compressed gas stream and support improved operational efficiency of the compressor system. This also contributes to cleaner compressor operation and reduced contamination within downstream processing equipment.
Another important feature of the oil is its versatility across a wide range of gas compression applications. Shell Gas Compressor Oil S4 PV 190 is suitable for compressors handling gases such as methane, ethane, propane, propylene and butane, as well as ammonia and inert gases. It can also be used for compressors handling chemicals including vinyl chloride monomer and butadiene. This versatility allows a single lubricant to be used across multiple gas compression applications in industrial and processing environments.
Shell Gas Compressor Oil S4 PV 190 is approved by several leading compressor manufacturers including Burckhardt Compression, Linde and GreenField (Atlas Copco), demonstrating its proven reliability in demanding compressor applications. It can be used in reciprocating compressors where lubrication of cylinders, piston rings and packing components is required, as well as for forced feed lubrication systems in certain compressor designs.
Physical characteristics include a kinematic viscosity of approximately 190 mm²/s at 40°C and 35 mm²/s at 100°C, with a viscosity index of approximately 234. The oil has a flash point above 260°C, a pour point of approximately –36°C and a density of around 1055 kg/m³ at 15°C, supporting reliable performance across a wide range of operating conditions.
