The Modular Gear Pump is a robust and efficient pumping solution for the Oil and Gas industries. This pump is based on the “gear within gear” principle. The rotary and idler gears in the pump head create cavities between their teeth, achieving positive displacement. During each revolution, a fixed volume of fluid enters the casing through the suction port, filling the spaces between the gear teeth. The crescent within the pump head then separates the fluid as the idler gear turns on the pump shaft.
Max. Flow:
Max. Head:
Max. Temp:
Material:
7.7m³/hr
300m
100°C
Metal
How does an Internal Eccentric Gear Pump work?
Image 1: Fluid entering the pump: The orange coloured section in the image represents the process medium as it is entering the pump suction port, pump casing & filling the cavities between the Idler Gear (Red) & Rotary Gear (Brown). The 3 arrows indicate the direction of fluid passage through the pump and rotational direction of the gears.
Image 2: Fluid filling the cavities & split of flow: As the fluid progresses through the pump head and fills the cavities between the gears it is also separated by the crescent shape in the pump head, which acts as a seal preventing back flow between the suction & discharge ports.
Image 3: Pump almost flooded: As the fluid fully fills the casing all cavities between the gears are completely filled in the form of locked pockets of fluid to guarantee absolute volume control and enable the pump to deliver a fixed volume per revolution.
Image 4: Pump is flooded & starts to discharge the process medium under pressure: Once the pump is fully flooded, the rotor and idler gears mesh together and form a liquid seal which is equidistant between the pump ports which then enables the fluid to exit the discharge of the pump under pressure. The delivery pressure is dependent on the installed power of the motor.
Our range of Modular External Gear Pumps is ideal for the following applications and industries:
Max Flow: 7,7m³/hr
Max Pressure: 300 meters
Viscosity Range: 10 – 5,50 cSt
Max Speed: 1500 rpm
Max Temp: 100ºC
Materials and Limits
Connection Sizes: ¾” – 2”
Capacity Range: 1 – 7 m³/hr
Pressure Range: 10 – 300 Meters
Temperature Range: up to 100ºC
Speed Range: 50 – 1500 rpm
Viscosity Range: 20 – 550 cPs
Pump Body & Cover:
Cast Iron
Cast Steel
Stainless Steel AISI 304/316
Gears:
Steel
Stainless Steel AISI 304/316
Bearings:
SnBz12 Bronze
Carbon Graphite
Ina Bushing Bearings
Sealing:
Soft Seal / Packed Gland
Lip Seal
Mechanical Seal
Largest UK Stock
Same Day Quote
Fastest Delivery
Largest UK Stock
Same Day Quote
Fastest Delivery
Our friendly team at Tapflo UK would be more than happy to assist you further with any pump solutions, delivery information or questions you have. If you need additional support on-site, you can speak to a member of the team today to organise a site visit.
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