Gear Pumps
A gear pump is a positive displacement pump suited to viscous fluids that carries liquid between the teeth of two meshing gears turning inside the casing and discharges it.
It is used to transfer lubricating oil, fuel oil, hydraulic oil, resin and viscous process liquids. Casing material, flow and drive type are chosen for the application.
Main Applications
- Lubricating and hydraulic oil transfer
- Fuel oil and burner supply
- Resin and adhesive
- Viscous food and process liquids (depending on model)
- Tank filling and emptying
Technical Data
| Pump type | Gear pump (external or internal gear, depending on model) |
|---|---|
| Fluid | Oil, fuel and viscous liquids |
| Casing | Cast iron, bronze or stainless (depending on model) |
| Flow | Depending on model |
| Pressure | Depending on model |
| Temperature | Depending on model |
| Drive | Electric motor (depending on model) |
| Relief valve | Built-in or external (depending on model) |
Material Options
| Part | Cast iron casing | Stainless casing |
|---|---|---|
| Suitable fluid | Oil, fuel oil | Chemicals and food (depending on model) |
| Gears | Steel (depending on model) | Stainless (depending on model) |
| Sealing | Gland or mechanical (depending on model) | Mechanical seal (depending on model) |
| Typical use | Oil transfer | Process liquids |
Which material? As a gear pump is positive displacement, pressure rises quickly if the discharge is closed; a relief (bypass) valve is essential. Flow, pressure and materials are confirmed per model.
Advantages
Suited to Viscous Liquids
- Oil and resin
Steady Flow
- Pulse-free
Compact
- Small casing
Self-Priming
- Depending on model
Construction and Design Features
- Two gear rotors
- Casing and covers
- Shaft seal
- Relief valve (depending on model)
Send the fluid, viscosity, flow, pressure and temperature; we will confirm a suitable gear pump and lead time.
How to Choose?
- Connection and flowDetermine line size and required flow.
- PressureDetermine discharge pressure and relief valve need.
- Fluid and temperatureState viscosity and temperature.
- Materials and driveChoose casing material and motor type.
Complementary Products
Why ORFA?
Other Acid and Chemical Pumps
Diaphragm Pumps
Diaphragm pumps transfer acids, chemicals, sludge and liquids containing solids without leakage by diaphragm movement.
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Dosing Pumps
Dosing pumps feed chemicals into a system in precisely set quantities, used in water treatment and process applications.
Details →Magnetic Drive Pumps
Magnetic drive pumps run without a shaft seal using a magnetic coupling and pump acids and chemicals without leakage.
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Liquid Oil Transfer Pumps
Liquid oil transfer pumps are used to transfer oil, diesel and similar liquids between tanks, drums and vehicles.
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Drum Pumps
Drum pumps are immersion pumps used to safely empty chemicals, oils and other liquids from drums and containers.
Details →Our Gear Pumps
ORFA supplies gear pumps in a range of pressure classes, sizes and connection types to suit your application. Descriptions, technical specifications, materials and dimension tables are available on each detail page.
Get a quote for your project
Our sales team will prepare the best solution for your needs.