3545-3541-3541C-3537C

Summary

Product Identification

These are 35 Frame Plunger Pumps, available in several models:

• Model 3545: Forged Brass
• Model 3541: Stainless Steel
• Model 3541C: SS Flushed
• Model 3547C: NAB Flushed

Operating Limits

• Flow: 45 GPM (170 L/M)
• Pressure Range: 100 to 1000 PSI (7 to 70 BAR)
• Inlet Pressure Range: Flooded to 70 PSI (Flooded to 4.9 BAR)
• RPM: 765 RPM
• Maximum Liquid Temperature: 140°F (60°C)
  • Note: Above 130°F, contact CAT PUMPS for inlet conditions and elastomer recommendations.

Mechanical / Hydraulic

• Bore: 1.772" (45 mm)
• Stroke: 1.890" (48 mm)
• Crankcase Capacity: 4.2 Qts. (4 L)
• Inlet Ports (2): 1-1/2" NPTF
• Flushing Ports (2) (Models 3541C, 3547C): 1/4" NPTF
• Discharge Ports (2): 1" NPTF
• Pulley Mounting: Either Side
• Shaft Diameter: 1.378" (35 mm)
• Weight: 139 lbs. (63 kg)
• Dimensions: 23.89 x 18.11 x 9.72" (607 x 460 x 247 mm)

Features

Superior Design

• Triplex plunger design provides smoother liquid flow.
• V-Packings are completely lubricated and cooled by the liquid being pumped.
• Special Flushed Inlet Manifold allows external flush for added cooling with high temperature liquids and lubrication with low lubricity liquids.
• Lubricated Lo-Pressure Seal offers double protection against external leakage.
• Oil bath crankcase ensures optimum lubrication.
• Close tolerance concentricity of the ceramic plunger maximizes seal life.

Quality Materials

• Precision design 304 and 316 stainless steel valves and seats are hardened and polished for ultimate seating and extended valve life.
• Forged brass, 316 stainless steel, duplex stainless steel or nickel aluminum bronze manifolds for strength and corrosion resistance.
• Special concentric, high-density, polished, solid ceramic plungers provide a true wear surface and extended seal life.
• Specially formulated, CAT PUMP exclusive, V-Packings 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 loading capacity mean longer bearing life.

Easy Maintenance

• Wet-end is easily serviced without entering crankcase, requiring less time and effort.
• Inlet and discharge valve assemblies interchange for easier maintenance.
• Valve assemblies are accessible without disturbing piping, for quick service.
• Preset packings mean no packing gland adjustment is necessary, reducing maintenance costs.

Electrical

The "ELECTRIC HORSEPOWER REQUIREMENTS" table is fragmented in the extracted text. See the official PDF for exact tabulated values.

Formulas for Pump System Calculations:

• Determining Pump R.P.M.: (Desired G.P.M. / Rated G.P.M.) x Rated R.P.M. = Desired R.P.M.
• Determining Required H.P.: (GPM x PSI) / 1460 = Electric Brake H.P. Required
• Determining Motor Pulley Size: (Pump Pulley O.D. x Pump R.P.M.) / Motor R.P.M. = Motor Pulley O.D.

Cautions and Warnings

• All High Pressure Systems require a primary pressure regulating device (e.g., regulator, unloader) and a secondary pressure safety relief device (e.g., pop-off valve, safety valve, relief valve).
• Failure to install such relief devices could result in personal injury or damage to pump or property.
• CAT PUMPS does not assume any liability or responsibility for the operation of a customer's high pressure system.
• Read all CAUTIONS and WARNINGS before commencing service or operation of any high pressure system. These are included in each service manual and with each Accessory Data Sheet.

Material Codes

• ABS: ABS Plastic
• AL: Aluminum
• BB: Brass
• BBCP: Brass/Chrome Plated
• CC: Ceramic
• CM: Chrome-Moly
• D: Acetal
• EPDM: Ethylene Propylene Diene Monomer
• F: Cast Iron
• FBB: Forged Brass
• FBR: Fiber
• FCM: Forged Chrome-moly
• FPM: Fluorocarbon
• NBR: Medium Nitrile (Buna-N)
• NBRS: Buna, Silicone Free
• NY: Nylon
• PPG: Glass Filled Polypropylene
• PTFE: Pure Polytetrafluoroethylene
• PVDF: Polyvinylidene Fluoride
• S: 304SS
• SS: 316SS
• SFTB: Special Blend PTFE Black
• SSZZ: 316SS/Zamak
• STG: Special Blend PTFE White
• STL: Steel
• STCP: Steel/Chrome Plated
• STZP: Steel/Zinc Plated
• TNM: Special High Strength
• ZP: Zinc Plated

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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 on the project.

Official datasheet (PDF)

Lenntech datasheet mirror