- Hermetic seal by single seal arrangement
The process gas is sealed hermetically by PEC seal with single seal arrangement by the barrier gas which is higher than the sealed process gas.
- Free from contamination
Since the seal surface is designed for non-contact, the abrasion particle is not generated. Consequently, this seal is best applicable to such plant as food, medicine, etc. where the cleanliness is required.
- Long life
Due to the designed of non-contact, the prolonged life is expectable without any wear and damage on seal surface.
Power loss is limited, energy saving.
Dry Gas Seal (PPG Seal)
The Pillar PPG (Pillar Phoenix Groove) seal is Hydrodynamic dry gas seal designed with non-contact, which seal surface is uniquely grooved to use the dynamic pressure effectively by the multi-barrier.
It is applicable to a wide range of applications from centrifugal compressor to the steam turbine and blower.
- Multi-groove type, assuring stabilized sealing performance
The divided multi-groove serves to maintain the desired parallelism between seal surfaces, and further to minimize the change in leak rate. Besides, the leak rate in this case is approx. 1/1000 of that for labyrinth seal, as the clearance between seal surfaces is minimal or several micrometers.
- Minimized power consumption
Since the power is used only for shearing gas at seal area, the power consumption is extremely limited as compared with contact seal.
- Space-saving cartridge type
The PPG seal is a cartridge type seal which rotary side is integral with the static side, allowing the seal to be handled easily.
- Applicable to rotation in both directions
Since the groove is bilaterally symmetric, it is applicable regardless of rotating direction.
- Type: PPG-1RB
Maximum working pressure: 1.0MPa
Peripheral speed: 15m/s (max.)
- Type: PPG-3SB
Maximum working pressure: 10.0MPa
Peripheral speed: 150m/s (max.)
- Turbine, blower