Yildiz YMD External Modular Gear Pump

Fuel Transfer Pump & Lubricant Pump

Key Specifications
Max Flow Rate 116lpm
Max Head 300M
Max Temperature 100°C
Max Viscosity 2500cP
Solids 0mm
Sizes 3/4" to 2"
Datasheet
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This Modular Gear Pump range is designed for pumping low to medium viscosity fluids with lubricating properties, in applications that require a combination of low flow and high pressure. Tight clearances between spur gears mean that this series of high pressure external gear pump can generate up to 30 bar pressure, but is not designed for fluids containing abrasive particles. The most common applications for these modular gear pumps include fuel oil transfer, diesel fuel transfer, coolant transfer, OEM, hot oil circulation, marine and lubrication.

Features of the Yildiz YMD gear pump:

  • High pressure modular external gear pump
  • Designed for applications that require low flow and high pressures
  • Compact design
  • Reliable construction
  • Various sealing options
  • Various material options
  • 230v, three phase 50/60hz motors available
  • Manufactured according to CE regulations
  • Motor drive and gearbox drive versions available
  • Available with jacket cover and pressure relief valve
  • Explosion proof ATEX rated motors and non-sparking flexible couplings are available

For more information on external gear pumps work and their typical applications read our guide.

CAST
IRON		STEEL
CAST		STAINLESS AISI
304/316 CAST		STEELSTAINLESS STEEL
AISI 304/316		SNBZ 12
BRONZE		BEARINGCARBON
GRAPHITE		INA BUSHING
BEARING		SOFT
SEAL		MECHANICAL
SEAL		LIP
SEAL
PUMP BODY & COVERSXXX
GEARSXXX
BEARINGSXXX
SEALINGXXX

FAQs

Gear pumps operate by an unchanging volume of fluid passing between the teeth of two meshing gears and their casing at a constant rate (not between the gears themselves). As the gears rotate and the meshed teeth separate, a partial vacuum is formed that fills with fluid, which they trap and move it around the casing from the suction to the discharge point.

The pumping of high viscosity lubricating fluids such as oils, fuels, paints, soaps and resins. The pumping of low viscosity fluids should be avoided as they can cause fluid to leak backwards or "slip" back to the suction side.

An external gear pump has two identical gears positioned side by side, rotating and interlocking into one another. One is driven by the motor and in turn moves the other gear.

Whilst external gear pumps offer higher pressure and flow rates, internal gear pumps generally have better suction capabilities and are able to handle higher temperature, higher viscosity fluids. Internal gear pumps slower speeds and larger clearances also makes them more suitable for shear sensitive fluids

Yes. Gear pumps have excellent self-priming capabilities thanks to their rotating gears evacuating any air in the suction line, and forcing the liquid into the pump inlet.

The close tolerances between the gears and casing mean that pumping solids will result in wear and damage. Some internal gear pump designs which have less tight tolerances and slower speeds however may be able to tolerate small solids.

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