S748 Tandem Dry Gas Seal with Intermediate Labyrinth for Centrifugal Compressor

Operating Parameters

● Pressure: ≤25MPa ● Temperature: -160~260℃ ● Shaft Diameter: 25~360mm ● Speed: ≤50000r/min ● Linear Velocity: ≤180m/s The above limit application parameters are not met simultaneously, customized design for particular applications.

Product Description

● Suitable for high pressure, large shaft diameters and harsh applications. ● Non-contact running seal face. ● The surrounding design for seat effectively reduces the damage of equipment which caused by broken 　seat. ● Two sets tandem frictional pairs, the primary seal is for main seal, the secondary seal is for safe seal. ● The auxiliary seal uses high-performance polymer seal which has good temperature resistance, pressure 　resistance, and corrosion resistance. ● The two-stage seal can withstand the full process pressure, and after the failure of inboard seal, 　outboard seal can still operate safely under the full process pressure. ● There is a secondary seal gas injection, the secondary seal working gas is nitrogen, and no process gas 　leaks from outboard seal to the atmosphere. ● Unidirectional grooves and bidirectional grooves are available. ● Cartridge design is easy for installation and dismantling. ● Suitable for most applications, it is a structure with the highest safety and reliability. Process gas 　does not leak into the atmosphere, and external nitrogen does not enter the process system.

Interface Details

● A　Primary Seal Gas 　　　　　Process gas/External gas ● B　Primary Leakage Gas 　　　 Vent to flare/Vent to safe location ● C　Secondary Seal Gas 　 　　 Nitrogen　 ● D　Secondary Leakage Gas　　 Vent to safe location ● E　Separation Gas 　　　　　　Nitrogen/Instrument air, nitrogen is preferred

Recommended Applications

● Cracking Gas Compressor ● Propylene Compressor ● Ethylene Compressor ● Natural Gas Compressor ● Recycle Hydrogen Compressor ● Recycle Gas Compressor ● Ammonia Compressor ● Expander

Materials and Configurations