CAT 2531 Plunger Pump – 25 GPM, 1000 PSI

Model: 2531
Category: Pressure Washer Pumps → Triplex Plunger Pumps
Type: CAT 2531 Plunger Pump – 25 GPM, 1000 PSI, 1025 RPM, 30mm Shaft

The CAT Pumps 2531 Plunger Pump is a heavy-duty triplex positive displacement reciprocating plunger pump built for demanding industrial applications requiring high flow, dependable pressure output, and long-term durability. Designed with 316 stainless steel manifolds, 316 stainless steel valve assemblies, solid ceramic plungers, and standard NBR (Buna-N) seals and O-rings, this pump is well suited for multi-gun, multi-nozzle, and specialty liquid pumping systems.

Key Features

• Genuine OEM CAT Pumps 2531 triplex plunger pump

• Delivers 25 GPM at 1000 PSI

• Operates at 1025 RPM

• Heavy-duty 316 stainless steel manifold for corrosion resistance

• 316 stainless steel valve assemblies for extended service life

• Solid ceramic plungers for exceptional wear resistance

• Standard NBR (Buna-N) seals and O-rings

• Triplex plunger design provides smoother liquid flow

• Wet-end can be serviced without entering the crankcase

• Ideal for multi-gun, multi-nozzle, and specialty liquid applications

Technical Specifications

Product Name: Triplex Plunger Pump
Manufacturer: CAT Pumps
Part Number: 2531

Flow Rate: 25 GPM
Maximum Pressure: 1000 PSI
RPM: 1025
Shaft Size: 30 mm
Bore Diameter: 32 mm
Stroke: 38.5 mm
Weight: 82 lbs.
Condition: New

Construction Details

• 316 stainless steel manifold

• 316 stainless steel valve assemblies

• Solid ceramic plungers

• Standard NBR (Buna-N) seals and O-rings

• Die-cast aluminum crankcase for high strength and reduced weight

• Chrome-moly crankshaft for durability and surface hardness

• Oversized crankshaft bearings for longer bearing life

Design Advantages

• Triplex plunger design helps provide smoother liquid flow

• High-pressure seals are lubricated and cooled by the pumped liquid

• Lubricated low-pressure seals provide added protection against external leakage

• Oil bath crankcase ensures consistent lubrication

• Close plunger concentricity helps maximize seal life

• Inlet and discharge valve assemblies are interchangeable

• Preset seals require no packing adjustment

Typical Applications

• Industrial multi-gun pressure systems

• Multi-nozzle washdown systems

• Pumping DI water and salt water

• High-flow industrial cleaning systems

• Applications requiring a 25 GPM triplex stainless steel plunger pump