- Optimized labyrinth design for high efficiency and good rotordynamic behavior
- Shaft forged with low Length to Diameter (L/D) ratio for stable operation without critical speed problems and reduced vibration levels
- Radial grooves provide increased radial stiffness, reduced effect on rotor tilting, and good rotor dynamic behavior
- Swirl break at balancing piston to maintain rotor stability even when internal clearances are worn
- Optimized shaft sealing design with jacket cooling and mechanical seal: pre-warming not required
- Main boiler feed in thermal power stations
- Start-up boiler feed in thermal power stations
Main design features
- Double suction first stage available in small sizes
- Impellers are shrunk on, have keys for torque transmission, and use split ring for thrust loading
- The pumps are provided with balance drum with shrunk on thrust collar, and oil press fit to avoid damage during transient conditions
- Four-lobe journal bearing provides high stiffness and damping to minimize shaft movement
- Fully rated double-acting, tilting-pad thrust bearing
- Shrunk on coupling with oil press fit, parallel stepped or taper fit
|Capacities||Up to 1,750 m3/h / 7,700 US gpm|
|Heads||Up to 4,000 m / 13,120 ft|
|Pressures||Up to 430 bar / 6,240 psi|
|Temperatures||Up to 220°C / 430°F|
|Discharge sizes||Up to 300 mm / 12 inches|
|Maximum speed of rotation||Up to 5,500 rpm|
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