Z series two screw pumps

The Z series applies KRAL's pump expertise to two screw pumps designed to handle aggressive, low- or non-lubricating and contaminated media.

Key features

• Delivery rate 330 to 17,660 l/min (20 to 1,060 m³/h); max. differential pressure 25 bar
• External, oil-lubricated bearings with large bearing housing; reinforced screws for higher differential pressure
• Delta-design housing for low internal flow losses and good suction, coping with high viscosity and brief high gas content
• Integrated heating jacket and optional integrated circulation valve
• Single- or double-acting mechanical seals with optional leakage monitoring (API plans); hardened precision timing gears
• Manufacturing according to API 676 possible

Applications

• Aggressive, poorly lubricating or contaminated liquids