Project Description
- Accommodates shaft deflections due to stationary design
- Designed to handle media containing solids
- O-ring is dynamically loaded to prevent shaft damage
- Can operate under vacuum without locking the seat
- Pumping device available for increased efficiency in circulation
- Springs are product protected to avoid contamination
- Compact installation design
- Can accommodate reverse pressure
- Chemical industry
- Dirty, abrasive and solid containing media
- Fugitive hydrocarbons
- Refining technology
- Sticky and stringy media
- Water and waste water technology
- Chemical standard pumps
- Sewage pumps
- EN 12756
- Seal face: Carbon graphite resin
impregnated (B), Silicon carbide (Q1) - Seat: Silicon carbide (Q1)
- Secondary seals: FKM (V), NBR (P),
FFKM (K), PTFE (T) - Springs: Hastelloy® C-4 (M)
- Metal parts: CrNiMo steel (G)
- Sizes: d1 = Upto 100 mm (Upto 4.000’’)
- Pressure: p1*) = 25 bar (363 PSI)
- Temperature: t = -40 °C .. +220 °C
(-40 °F .. + 428 °F) - Speed = 20 m/s (66 ft/s)
- Permissible axial movement: ± 1.0 mm
*) Additional seat locking is not needed in
vacuum operation. For operation under vacuum
it is necessary to arrange for quenching on the
atmosphere
- Single seal configuration
- Balanced design
- Independent of direction of rotation
- For plain shafts
- Stationary design with multiple springs