6801-6811-6801K-6811K

Summary

Product identification

This document describes the CAT Pumps 68 Frame Block-Style Stainless Steel Plunger Pump, including models 6801, 6801K, 6811, and 6811K.

• Standard Models: 6801, 6811
• Flushed Models: 6801K, 6811K

Operating limits

Models 6801, 6801K

• Flow: 15.0 GPM (57 L/M)
• Pressure Range: 100 to 7000 PSI (7 to 485 BAR)
• RPM: 600 RPM
• Bore: 0.984" (25 mm)

Models 6811, 6811K

• Flow: 15.0 GPM (57 L/M)
• Pressure Range: 100 to 5000 PSI (7 to 345 BAR)
• RPM: 600 RPM
• Bore: 0.984" (25 mm)

Common Specifications

• Inlet Pressure Range: Flooded to 50 PSI (Flooded to 3.5 BAR)
• Maximum Liquid Temperature: 140°F (60°C)
  • Note: Above 130°F, consult CAT PUMPS for inlet conditions and elastomer recommendations.

Feed water

• Standard Models: Lo-Pressure Seals and V-Packings are lubricated and cooled by the pumped liquid.
• Flushed K Models: Feature a special ported inlet manifold that allows an external flush liquid for cooling high-temperature liquids and lubricating low-lubricity liquids (e.g., DI water).

Electrical

Electric horsepower requirements vary by model, flow, and pressure.

• Model 6801/6801K: Up to 71.9 HP at 7000 PSI (485 BAR) and 15 GPM (57 L/M) at 600 RPM.
• Model 6811/6811K: Up to 51.4 HP at 5000 PSI (345 BAR) and 15 GPM (57 L/M) at 600 RPM.
• See the official PDF for exact tabulated values across different flow rates, pressures, and RPMs.

Mechanical / hydraulic

• Stroke: 2.579" (65.5 mm)
• Crankcase Capacity: 10 Qts. (9.46 L)
• Inlet Ports (2): 1-1/2" NPTF
• Flushing Ports (2) (K Models): 1/2" NPTF
• Discharge Ports (2): 1" NPTF
• Shaft Diameter: 1.772" (45 mm)
• Weight: 355 lbs. (161 kg)
• Dimensions: 29.5 x 24.33 x 11.98" (750 x 618 x 305 mm)

Materials of Construction

• Pump Frame: 68 Frame Block-Style
• Manifolds: 316 SSL or Duplex block-style for strength and corrosion resistance.
• Valves, Seats, and Springs: Precision design 316 stainless steel, hardened and polished.
• Plungers: Special concentric, high-density, polished, solid ceramic.
• V-Packings: Specially formulated, CAT PUMP exclusive.
• Crankcase: Die cast aluminum (optional Cast Iron for hazardous environments).
• Crankshaft: Chrome-moly.
• Plunger Rods: Stainless steel high strength.

Design Features

• Triplex plunger design for smoother liquid flow.
• Oil bath crankcase for optimum lubrication.
• Close tolerance concentricity of ceramic plunger for maximized seal life.
• Oversized crankshaft bearings for extended bearing life.
• Wet-end easily serviced without entering crankcase.
• Interchangeable inlet and discharge valve assemblies for easier maintenance.
• Preset packings eliminate packing gland adjustment.

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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 complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used for the project.

Official datasheet (PDF)

Lenntech datasheet mirror