Technical Specifications

Internal Gear Pumps (Eccentric Type)

Technical Specifications

Working Principle

Internal gear pumps consist of a rotor (external gear), an internal gear (ring gear), and a separator (crescent) element.

As the rotor rotates eccentrically within the internal gear, a volume is created in the separation zone of the gears, and the fluid is drawn in. The fluid is carried within the gear cavities and transferred to the discharge line.

Thanks to this design:

• Very low pulsation
• High suction capability
• High performance at low speeds
• Transfer of high-viscosity fluids

are achieved.

Technical Data

Flow Rate Range

• 0.5 m³/h – 200 m³/h

Operating Pressure

• 6 – 16 bar
• Up to 20 bar in heavy-duty versions

Viscosity Range

• 10 – 300,000 cP

Operating Temperature

• -20°C / +250°C
• (Optional heating jacketed casing)

Speed Range

• 100 – 750 rpm

Suction Capability

• Up to 6 – 8 meters

Connection Types

• DIN / ANSI flanged
• BSP / NPT threaded connections

Advantages

• Suitable design for high-viscosity fluid transfer
• High efficiency at low speeds
• Very low pulsation
• Quiet operation
• Optional heated casing
• Long service life
• Stable and controlled flow rate

Helical & Spur Gear Pumps (External Gear Pumps)

Technical Specifications

Working Principle

Helical and spur gear pumps operate based on the rotation of two external gears that mesh with each other inside the pump casing.

The gear driven by the motor transmits motion to the other gear. At the separation point of the gears, a volume is created, allowing the fluid to be drawn in and transported within the gear cavities to the discharge line.

Helical gear profile:

• lower noise,
• smoother flow,
• more stable operation

while spur gear models are preferred for economical and standard applications.

Technical Data

Flow Rate Range

• 0.5 m³/h – 150 m³/h

Operating Pressure

• 6 – 25 bar
• Up to 30 bar in heavy-duty versions

Viscosity Range

• 1 – 100,000 cP

Operating Temperature

• -20°C / +200°C

Speed Range

• 300 – 1800 rpm

Suction Capability

• 3 – 6 meters

Connection Types

• DIN / ANSI flanged
• BSP / NPT threaded connections

Advantages

• Compact and robust design
• High pressure resistance
• Cost-effective solution
• Easy maintenance
• Low pulsation flow
• Wide application range
• Continuous and stable operation