S738 Tandem Dry Gas Seal 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 demanding applications. ● Non-contact running seal face. ● Two sets tandem frictional pairs, the primary seal is for main seal, the secondary seal is for safe 　seal. ● The surrounding design for seat effectively reduces the damage of equipment which caused by broken 　seat. ● The auxiliary seal uses high-performance polymer seal which has good temperature resistance, pressure 　resistance, and corrosion resistance. ● Both stages of the seal can withstand the full pressure of the medium, and after the failure of the main 　seal, the safety seal can still be operated under the full pressure of the medium. ● There is no secondary seal gas (nitrogen) supply, and the primary and the secondary seal gas are both 　process gas and a few process gas in secondary seal leakage will leak into the atmosphere. ● Unidirectional grooves and bidirectional grooves are available. ● Cartridge design is easy for installation and dismantling. ● It is suitable for occasions where there is no nitrogen on site and leakage process gas needs to be 　recovered, and it is a structure with relatively high safety and reliability.

Interface Details

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

Recommended Applications

● LNG Refrigerant Compressor ● Natural Gas Pipeline Compressor

Materials and Configurations