6ML4 Metering and Dosing PC Pump

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The Liberty Process 6ML4 Progressive Cavity Metering and Dosing Pump is an ideal metering pumping solution for the pumping and mixing of polymers and other chemical compositions. The Liberty 6ML4 Series PC Pump is a standard flanged pump manufactured with cast iron or stainless steel casings.The pump unit is a modular design with simple hardened pinned joint drive assembly. Rotors are typically hardened tool steel or stainless steel with a hard chrome plating for long life in abrasive and erosive applications. All other wetted parts are either carbon steel or stainless steel for added durability.

Industrial valve manufacturing process involves several key steps to ensure quality and functionality. It typically begins with design and material selection, followed by casting or forging of valve components. Machining and assembly are then carried out, where precise measurements and tight tolerances are crucial. Testing procedures, including pressure and leakage tests, are conducted to verify performance and safety standards. Finally, finishing processes such as painting or coating are applied for corrosion resistance and aesthetics. Throughout the entire process, adherence to industry standards and rigorous quality control measures are essential to produce reliable valves for various industrial applications.

pressure relief valve and safety valve

Stators are available in many elastomer materials such as buna, natural rubber, epdm and viton. The standard seal design is a set of gland packing with Lantern Ring and Flush Connections. Mechanical seal options are readily available. The Liberty unit is a low-cost, maintenance free, dependable drop-in replacement pump which will give you the service you need at a price you can afford.

6ML4 – Technical Data

Flow Rate 1.8 – 24 GPM
Pressure 0 – 450 PSI
Seal Options Packing or Mechanical Seal
Base Options Steel and Stainless Steel
INLET / OUTLET 3″ / 2-1/2″
Rotors Stainless Steel, Chrome Plated Tool Steel
Stators Buna / Viton® / EPDM / Natural Rubber
Motor Options 3, 5, 7.5 HP

Pump Features

  • Modular Design
  • Maintenance Free
  • Easy Assembly/Disassembly
  • Simple Pin Joint Design Connections
  • NPT Stator Discharge Connections
  • Low Shear
  • Non-Pulsating

Compatibility

  • Liberty LL4
  • Justice Series LJ4

Documents

Pump PDFs

PDFs

Pump Drawings

Drawings

Pump Performance

Performance