The screws can run directly in a carbon steel casing, which eliminates any expensive internal coating and additional external casing. No flat gaskets are used but only O-ring seals to avoid the risk of leakage. As the drive screws turn, the fluid is shifted and constantly conveyed to the pumps discharge port, creating a constant flow rate regardless the pumping pressure. This method of operation delivers smooth, constant fluid flow with low noise and high levels of energy efficiency.

List of benefits:
- Ability to handle a wide range of flows, pressures, fluid types and viscosities,
- High volumetric efficiencies,
- Low mechanical vibration ensures a longer service life,
- Intrinsically smooth and quiet operation,
- High tolerance for entrained air,
- Extremely low pulsation, typical of this pump, reduces stress and prolongs life of other associated components (piping, hoses, etc.).