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Wacker Neuson APT4


4-inch automatic self-priming pump for high flow applications

Heavy-duty automatic self-priming centrifugal trash pumps are ideal for high flow efficiency and superior solid handling capabilities. Excellent for contractors, pump rental companies, mining, general construction and municipal use where unattended operation is necessary. High-grade cast ductile iron pump housing, wear plate and impeller construction is jobsite tough.

  • Venturi/compressor assist priming system primes and re-primes pump automatically - no need for manual priming and capable of unattended operation applications.
  • Oil-filled bearing and oil-bathed mechanical seal design provides indefinite run-dry capability making it the perfect choice for inconsistent flow applications.
  • Engine/pump configuration and semi-open impeller design provides for high flow rate (1300 gpm/4921 l/min) and solids up to 2-in./51mm.
  • Standard control panel is telematics plug-n-play ready and includes float switch, on/off ready engine controller and standard automatic shutdowns for low oil pressure, high coolant temperature and overspeed.
  • Modular trailer/skid platform design is convertible for enhanced versatility.




L x W x H  in 133 x 64 x 80 93 x 40 x 64
L x W x H Shipping in 133 x 64 x 80 93 x 40 x 64
Diameter Suction & Discharge in 4 4
Operating weight  lb 3,267 2,762
Shipping weight  lb 2,917 2,412

Operating data 

Discharge Head  ft 149.9 149.9
Discharge capacity  US gpm 1,300 1,300
Pressure Max. psi 65 65
Suction height Lift ft 24.9 24.9
Solids diameter Max. in 2 2

Engine / Motor 

Engine / Motor type  Diesel, Inline 4-Cycle, Water Cooled Diesel, Inline 4-Cycle, Water Cooled
Engine / Motor manufacturer  Yanmar Yanmar
Engine / Motor  4TNV88-BDSA 4TNV88-BDSA
Displacement  in³ 133.5 133.5
RPM / speed Max. Operating rpm 2,200 2,200
Power Max. Rated Power hp 40.2 40.2
Power Rating Specification  J 1995 / ISO 3046 J 1995 / ISO 3046
Engine oil  US qt 7.8 7.8
Fuel type  Diesel #2 - ULSD Diesel #2 - ULSD
Tank capacity  US gal 72.9 72.9
Fuel consumption at Max. RPM US gal/h 2.2 2.2
Runtime  h 31.6 31.6