Silencer LD Series Precision Gear Pump

Silencer LD extends the successful Silencer series gear pump to light duty applications requiring a more compact size.


  • Flow Range 50 to 2500 ml/min
  • Chemically Resistant
  • Low Pressure Pulsation
  • Compact
  • Flexible Inlet and Outlet port locations
  • Robust
  • Hermetically Sealed (No Shaft-Seals)
  • Long Service Life
  • Low Noise
  • Low Maintenance


  • 250, 500, 1000, 1500, 2000
  • Silencer LD 2000


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Silencer LD precision gear pump extends the successful Silencer series to applications requiring a very compact size. This pump uses the same inexpensive, maintenance-free motor system while taking advantage of advanced pump manufacturing techniques to reduce size while still providing the life that Silencer pumps are known for at pressures up to 4 bar.

The 316L stainless steel casting allows for numerous port options at different orientations. Mounting holes are provided for easy integration into customer machines. Custom body designs can easily be provided for high volume OEM applications.


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Low Cost

Not all applications require maximum pump capability. Silencer LD has been optimized to lower cost while still providing superior Diener quality and reliability.

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DPP pumps are all characterized by their robustness and performance. Wear and tear is at its lowest, and their smart designs ensure a sustainable reduction of operating costs.

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100% Outgoing Testing

Before any order is shipped, every pump undergoes strict and thorough testing in compliance to its specifications at our factory. We send comprehensive reports to our clients, which not only save them time but also money.

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Chemically Resistant

Our pumps are made from materials that are resistant to a wide range of aggressive chemicals. This ensures that our pumps can operate reliably and precisely even in the most severe conditions.

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Low Pressure Pulsation

Thanks to their smart drives and the innovative helical gear design our pumps ensure an extremely smooth fluid delivery with almost no pressure pulsation.

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No Shaft Seals

DPP gear pumps are hermetically sealed instead of using conventional shaft seals. This means low maintenance for you and your customers, a long service life and the highest degree of productivity.



  • Max. continuous pressure 4 bar
  • Max. intermittent pressure 6 bar
  • Max. static case pressure 15 bar
  • Inlet Self-priming
  • Fluid viscosity range 0.3 - 1000 cps


  • Fluid temperature range 0-95°C
  • Ambient air temp. range 0-80°C
  • Relative humidity range 0-95% non-condensing


  • Metal components 316L stainless steel
  • Gears PEEK
  • O-ring options EPDM, Silicone, FKM, Nitrile
  • Inlet/Outlet 1/4” & 6mm push-to- connect, 1/8”-NPT, G1/8, 1/4”-28 UNF
  • Marking Permanent laser-mark identification for 100% traceability

Resources and Datasheets

Please use the links below to request access to the product datasheets and 3D STEP files.

Other Precision Gear Pumps

Build a Custom Pump to Your Specific Requirements

Our engineers and technical experts are eager to design a pump to your requirements.

DPP Silencer LD Precision Gear Pump