5CP6221-5CP6241CS-5CP6251

Summary

Product Identification

These are 5CP Stainless Steel Plunger Pumps.

• Models: 5CP6221, 5CP6241CS, 5CP6251

Operating Limits

• Maximum Liquid Temperature: 160 °F (71 °C)
  • Note: Above 130°F, consult CAT PUMPS for inlet conditions and elastomer recommendations.

Feed Water

• Inlet Ports (2): 1/2" NPTF
• Inlet Pressure Range:
  • Model 5CP6221: –5 to 60 PSI (–0.35 to 4 BAR)
  • Models 5CP6241CS, 5CP6251: Flooded to 60 PSI (Flooded to 4 BAR)

Product Water

• Discharge Ports (2): 3/8" NPTF
• Pressure Range (all models): 100 to 2000 PSI (7 to 140 BAR)
• Flow:
  • Model 5CP6221: 6.0 GPM (23 L/M)
  • Model 5CP6241CS: 4.0 GPM (15 L/M)
  • Model 5CP6251: 5.0 GPM (19 L/M)

Electrical

• RPM:

  • Model 5CP6221: 1400 RPM
  • Models 5CP6241CS, 5CP6251: 1725 RPM

• Electric Horsepower Requirements: See the official PDF for exact tabulated values across various pressures.

Mechanical / Hydraulic

• Bore: 0.787" (20 mm)
• Crankcase Capacity: 17 oz. (0.53 L)
• Stroke:
  • Model 5CP6221: 0.709" (18 mm)
  • Model 5CP6241CS: 0.394" (10 mm)
  • Model 5CP6251: 0.472" (12 mm)
• Shaft Diameter: 0.787" (20 mm)
• Weight: 20 lbs. (8 kg)
• Dimensions: 11.47x10.0x5.75" (291.3x254x146 mm)

Features

• Triplex plunger design provides smoother liquid flow.
• Hi-Pressure Seals are completely lubricated and cooled by the liquid being pumped.
• Inlet and discharge valve assemblies interchange for easier maintenance.
• Lubricated Lo-Pressure Seal provides double protection against external leakage.
• Oil bath crankcase assures optimum lubrication.
• Close tolerance concentricity of the ceramic plunger maximizes seal life.

Quality Materials

• Precision design 316 stainless steel valves and seats are hardened and polished for ultimate seating and extended valve life.
• 316 stainless steel manifold is strong and corrosion resistant.
• Special concentric, high-density, polished, solid ceramic plungers provide a true wear surface and extended seal life.
• Specially formulated, CAT PUMP exclusive, Hi-Pressure Seals offer unmatched performance and seal life.
• Die cast aluminum crankcase provides high strength, minimum weight and precision tolerance control.
• Chrome-moly crankshaft gives unmatched strength and surface hardness.
• Oversized crankshaft bearings with greater capacity mean longer bearing life.

Easy Maintenance

• Wet-end is easily serviced without entering crankcase, requiring less time and effort.
• Preset packings mean no packing gland adjustment is necessary, reducing maintenance costs.

Parts List

See the official PDF for the complete parts list, part numbers, descriptions, and material codes.

Material Codes

• AL=Aluminum
• BBNP=Brass/Nickel Plated
• CC=Ceramic
• CM=Chrome-moly
• EPDM=Ethylene Propylene Diene Monamer
• FCM=Forged Chrome-Moly
• FPM=Fluorocarbon
• HT=Hi-Temp (EPDM Alternative)
• NBR=Medium Nitrile (Buna-N)
• PVDF=Polyvinylidene Fluoride
• S=304SS
• SS=316SS
• SSL=316SS/Low Carbon
• SNG=Special Blend (Buna)
• STCP=Steel/Chrome Plated
• STZP=Steel/Zinc Plated
• STL=Steel
• TNM=Special High Strength

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WARNING: All systems require both a primary pressure regulating device (e.g., regulator, unloader) and a secondary pressure safety relief device (e.g., pop-off valve, safety valve). Failure to install such relief devices could result in personal injury or damage to the pump or to system components. CAT PUMPS does not assume any liability or responsibility for the operation of a customer’s high pressure system.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror