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Cat Pumps 35 frame plunger pump 3521DHS

Cat Pumps 35 frame plunger pump 3521DHS
In stock

Material: Stainless Steel
Flow rate: 94.6 lpm
Pressure range: 6.9 – 138 bar
Speed: 870 rpm
Inlet pressure: -0.35 – 4.8 bar
Max. fluid temperature: 71°C Read more..

  • Large own stock

  • Outstanding service

  • Fast delivery (1-2 days)

  • Thé Cat Pumps-dealer since 1978

Product description

Cat Pumps 3521DHS Plunger Pump

The Cat Pumps 3521DHS is a powerful industrial plunger pump from the 35-frame series, engineered for continuous-duty operation in demanding environments. Its robust design and use of high-quality materials ensure exceptional reliability and a long service life. With a flow rate of up to 94.6 l/min (25 gpm) and a maximum working pressure of 138 bar (2000 psi), this model is ideally suited for industrial, marine, cleaning, and process installations.

 

Key Features Cat Pumps 3521DHS

  • Triplex design for high efficiency and minimal pulsation.

  • Reinforced connecting rod and plunger rod materials for optimal performance under continuous-duty conditions.

  • Fully lubricated V-packings and low-pressure seals, cooled by the pumped liquid, significantly extend service life.

  • Model 3521C is optionally available with external flush ports, ideal for high-temperature or low-lubricity liquids.

  • Standard NBR seals, with optional alternatives (FPM, EPDM, FFKM) for higher temperature or chemical compatibility.

 

Technical Specifications Cat Pumps 3521DHS

  • Model: 3521DHS (Stainless Steel)

  • Flow: 94.6 l/min (25 gpm)

  • Working Pressure: 100–2000 psi (6.9–138 bar)

  • Pump Speed: 870 rpm

  • Minimum Speed: 100 rpm

  • Inlet Pressure: Flooded to 4.8 bar

  • Max. Fluid Temperature (NBR): 71°C (160°F)
    (FPM up to 82°C, FFKM up to 93°C)

  • Bore / Stroke: 32 mm / 48 mm

  • Connections:
    • Inlet: 1½” NPT(F)
    • Flush: ¼” NPT(F)
    • Discharge: 1” NPT(F)
  • Shaft Diameter: 35 mm – mountable on either side

  • Crankcase Capacity: 4.2 liters

  • Dimensions (L x W x H): 618 x 460 x 247 mm

  • Weight: 63 kg

Model 3521DHS is supplied with a shaft protector. Mounting rails sold separately.

 

Alternative seal configurations Cat Pumps 3521DHS

Specifications

Article number
3521DHS
Flow
94,6
Pressure Range
138
Material Manifold
Stainless steel
Speed
870
Max. Liquid Temp. (NBR)
71

Specifications

Article number
3521DHS
Flow
94,6
Pressure Range
138
Material Manifold
Stainless steel
Speed
870
Max. Liquid Temp. (NBR)
71

Cat Pumps 35 frame plunger pump 3521DHS

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Review Cat Pumps Cat Pumps 35 frame plunger pump 3521DHS

Material: Stainless Steel
Flow rate: 94.6 lpm
Pressure range: 6.9 – 138 bar
Speed: 870 rpm
Inl..

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