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CAT Pumps 350B Triplex Plunger Pump with Special Brass Manifold, 5 GPM, 1500 PSI, 1725 RPM

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19.80 lbs
Usually Ships in 2 Weeks
Now Only!
The CAT 340 brass manifold pump is one of the most popular pumps for self-service bays! 5 Frame triplex piston pump features brass manifolds to prevent manifold washouts. Up to 5.0 GPM, at pressures up to 1500 PSI.  Please note that brackets are not included with this pump.

Technical Specifications

Bore: 20 millimeter
Crankcase Capacity: 18 ounce
Inlet Port: 1/2 inch
Max GPM: 5
Max PSI: 1500
Max Temperature: 160 degrees F
RPM: 1725
Shaft Diameter: 20 millimeter
Stroke: 12 millimeter

Product Description

5 GPM Brass Manifold 5 Frame Plunger Pump

The CAT 340B 5 Frame triplex piston pump is perfect for use in car wash bays! Triplex Uniflow design provides continuous forward liquid flow for smooth operation. Chrome-plated 304 Stainless cylinders and sleeves provide long operating life with mild liquids (5PH-9PH). Special brass manifolds prevent manifold washouts through utilizing corrosion-resistant alloy and chrome plated finish.

Dimensions: 11.73" x 10" x 5.24"


  • 5 GPM
  • 1500 PSI
  • 1725 RPM
  • Inlet Pressure Range: Flooded to 60 PSI
  • .472" (12 mm) stroke
  • .787" (20mm) bore
  • .787" (20mm) shaft diameter
  • 18 oz. crankcase capacity
  • 160° Fahrenheit maximum liquid temperature
  • 1/2" NPTF inlet ports (2)
  • 3/8" NPTF discharge ports (2)
  • Special brass manifold
  • Standard Buna-N seals and o-rings
  • Solid ceramic plungers
  • 304 stainless steel valves
  • 19.8 lbs. 

Superior Design:

  • Triplex plunger design gives 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.
  • Convenient direct drive electric motor options.

Quality Materials:

  • Precision design 304 stainless steel valves and seats are hardened and polished for ultimate seating and extended valve life.
  • 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 loading capacity mean longer bearing life.

Easy Maintenance:

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

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