Cat Pumps 35 frame plunger pump 3545HS

Cat Pumps 3545HS Plunger pump

The Cat Pumps 3545HS is a powerful industrial plunger pump from the 35-frame series, specifically designed for demanding applications where reliability, efficiency, and long service life are critical. With a flow rate of up to 170 l/min (45 gpm)and a maximum pressure of 103 bar (1500 psi), this pump is suitable for both continuous and intermittent-duty use in industrial and marine environments.

Key features Cat Pumps 3545HS

• Triplex plunger design delivers high efficiency and low pulsation.

• Advanced connecting rods and plunger rods optimize drive-end performance, ideal for both continuous and intermittent operation.

• Fully lubricated and liquid-cooled V-packings and low-pressure seals ensure maximum service life.

• Model 3541CHS is available with external flush ports for high-temperature or low-lubricity fluids.

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

Technical specifications Cat Pumps 3545HS

• Model: 3545HS (Brass)

• Flow:
  • Standard: 170 l/min (45 gpm)
  • Alternative (intermittent duty): 189 l/min (50 gpm)

• Working Pressure:
  • Standard: 100 – 1000 psi (6.9 – 69 bar)
  • Alternative (intermittent duty): up to 1500 psi (103 bar)

• Pump Speed:
  • Standard: 765 rpm
  • Alternative (intermittent duty): up to 850 rpm
  • Minimum speed: 100 rpm

• Inlet Pressure: Flooded to 4.8 bar

• Max. Liquid Temperature (NBR): 60°C (140°F)
  (Alternatives: FPM up to 82°C, EPDM up to 71°C, FFKM up to 93°C, STHT up to 88°C)

• Bore / Stroke: 45 mm / 48 mm

• Connections:
  • Inlet: 1½” NPT(F)
  • Flush: ¼” NPT(F)
  • Discharge: 1” NPT(F)

• Shaft Diameter: 35 mm – suitable for left or right-hand mounting

• Crankcase Capacity: 4.2 liters

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

• Weight: 63 kg

Model 3541DHS is supplied with a shaft protector. Mounting rails sold separately.

Alternative seal configurations Cat Pumps 3545HS