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Tuthill – Magnetically Coupled Precision Pumps

Cutaway diagram of a magnetically coupled precision gear pump showing internal components, including the magnetic drive (2, 4) and gears (3, 5) for leak-proof chemical transfer

TUTHILL – PERCET FOR TECHNICALLY PRECISE & DEMANDING APPLICATIONS

Since 1977, Tuthill has worked to improve magnetically driven gear pumps by engineering solutions to meet the needs of varying applications and exacting designer specifications. The result is a family of magnetically coupled pumps that have found wide industry acceptance for their versatility and robust standards of build and reliability.

These pumps are known for their magnetically coupled, leak-free, seal-less construction and the nonpulsing flow of their external gear design. This makes them perfect for demanding applications such as medical equipment, laboratory equipment, chemical metering, laser cooling, and industrial temperature control. If it requires a seal-free, technically advanced pump, Tuthill Magnetically Coupled Pumps are the solution.

PERFORMANCE RANGE

  • Flow Range 0.015 to 650 GPH (0.06 to 2460 LPH)
  • Differential Pressure to 250 PSI (17.2 BAR)
  • System Pressure to 500 PSI (34.5 BAR)
  • Viscosity 0.3 cps to 2,000 cps
  • Temperature -50 °F to 350 °F (-46 °C to 176 °C)

FEATURES

  • Valveless Design, No Vapor Trapping
  • Exceptional Turndown Ratio 100:1
  • Field Repairable – Easy and Quick
  • Self Priming
  • Low Shear
  • Robust 5-bearing design
  • Efficient Modular Design

MAGNETICALLY COUPLED EXTERNAL GEAR PUMPS

The external gear design offers flow that is relatively independent of pressure providing constant fluid delivery with no pulsations. The flow will have a controlled volume that is accurate and repeatable, making it highly suitable for metering applications. The D, T, & P Series pumps can meet these demands in circumstances with high differential pressures and high system pressures, as well as thin to moderate viscosity fluids. The high volumetric efficiency is achieved by utilising two identical gears that rotate against each other.

BENEFITS

  • Long Life – Up to 20,000 Hours
  • Metering Accuracy Better Than 1%
  • Continuous Fixed Displacement Flow
  • Virtually No Pulsation
  • Easy, Low Cost Installation and Start Up

1. Motor End | 2. Magnet Containment No Dynamic Seals | 3. Gears: The Only Moving Parts | 4. Magnetic Coupling | 5. Robust 5 Bearing Design

TUTHILL PRODUCT VARIATION

CHEMICAL RESISTANT METALS

A vast knowledge of magnet, pump, and motor technology is utilised in the design, manufacturing, and application of our magnetically coupled pumps.

The long life and non-pulsing flow of the external gear design are combined with the magnetically coupled, leak-free, seal less construction. Temperatures to 350°F (176°C) and viscosities from 0.3 cps to over 10,000 cps make this pump tough and reliable.

D SERIES

  • Flow Range .015 to 121 GPH (.06 to 458 LPH)
  • Differential Pressures to 250 PSI (17.2 BAR)
  • System Pressure to 500 PSI (34.5 BAR)
  • Viscosities from 0.3 cps to 2,000 cps without speed reduction
  • Temperature -50 °F to 350 °F (-46 °C to 176 °C)
  • ATEX Approved
Black cylindrical pump and motor assembly

T SERIES

  • Flow Range 20 to 650 GPH (75 to 2460 LPH)
  • Differential Pressures to 250 PSI (17.2 BAR)
  • System Pressure to 500 PSI (34.5 BAR)
  • Viscosities from 0.3 cps to 2,000 cps without speed reduction
  • Temperatures -50 °F to 350 °F (-46 °C to 176 °C)
  • ATEX Approved
Black cylindrical pump and motor assembly

ENGINEERED PLASTIC ALTERNATIVES

The P Series magnetically coupled external gear pumps are constructed with Polyphenylene Sulfide (PPS), a highly durable engineered plastic. The PPS pumps produce a consistent non-pulsing flow, providing a versatile and durable solution in many applications.

P SERIES

  • Flow Range 1 to 65 GPH (3.8 to 246 LPH)
  • Differential Pressures to 130 PSI (9 BAR)
  • System Pressure to 300 PSI (20.7 BAR)
  • Viscosities from 0.3 cps to 1,000 cps without speed reduction
  • Temperatures 0 °F to 150 °F (18 °C to 65 °C)
Black cylindrical pump and motor assembly

SPECIFICATION DATA

Displacement Pump Maximum Speed Maximum Differential Pressure Maximum Temperature Flow @ 0 Pressure
Intermittent Continuous 3500 RPM 2900 RPM
ML/REV SERIES RPM PSI BAR PSI BAR °F °C GPH LPH
.11D500025017.225017.2350177618
.19D500025017.225017.23501771031
.23D500025017.225017.23501771238
.38D500025017.225017.23501772063
.57D500025017.225017.23501773094
.68D500025017.220013.835017735112
.80D500025017.220013.835017742132
.99D500020013.81409.735017752164
1.2D500020013.81409.735017763198
1.3D500017512.11258.635017768215
1.6D500015010.31006.935017784264
2.0D500015010.31006.9350177105331
2.3D500015010.31006.9350177121380
2.6T500025017.215010.3350177137430
5.3T500014510.01006.9350177279876
7.9T4000956.6704.83501774161306
8.0T400015010.31258.63501774211343
12.0T40001208.21006.93501776502015
.38P40001309.01309.0150662063
.57P40001107.61107.6150663094
.68P4000906.2906.21506636112
1.2P4000704.8704.81506663198
Legend Constant Duty at Maximum Pressure Intermittent Duty at Maximum Pressure
*Flow rates may vary depending upon application.

Materials Of Construction

 D SeriesT SeriesP Series
Wetted Components316 SS, Hastelloy, or Titanium316 SS, Hastelloy, or TitaniumPPS with 316 SS, Hastelloy, or Titanium Trim
GearsPPS, PEEK, or LCPPPS or PEEKPPS
BearingsPPS, PEEK, or LCPPPS or PEEKPPS
O-RingsViton, PTFE, EPR, Nitrile, or NeopreneViton, PTFE, EPR, Nitrile, or NeopreneViton, EPR, Nitrile, or Neoprene
MagnetsEncapsulated Ceramic or Samarium CobaltEncapsulated Samarium CobaltEncapsulated Ceramic or Samarium Cobalt

316 SS = Stainless Steel | PPS = Polyphenylene Sulfide | PEEK = PolyEtherEtherKetone | EPR = Ethylene Propylene Rubber | LCP = Liquid Crystal Polymer

ABOUT TUTHILL PUMP GROUP

Tuthill Pump Group has been providing positive displacement lubrication pumps for demanding OEM applications since 1927. Since that time, our product portfolio has developed to expand into a variety of markets and applications. Tuthill Pump products successfully handle applications from an extremely low-flow capacity with a high level of accuracy, to applications that are nearly solid in consistency with abrasive characteristics. Contact Us
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