Wacker Neuson PST Series Submersible Pump

Wacker Neuson PST Series Submersible Pump

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Wacker Neuson PST Series Submersible Pump for Heavy-Duty Construction Dewatering

The Wacker Neuson PST Series submersible pump is a heavy-duty, single-phase electric pump built for reliable performance on demanding construction and civil engineering job sites. Available through Ken’s Distributing Company, the PST Series covers a comprehensive range of configurations from 0.4 kW to 0.75 kW, with maximum flow rates up to 69.8 gallons per minute and solids handling capacity up to 0.75 inches in diameter on the PSTS 750 model. Whether managing groundwater in a foundation excavation, clearing a flooded trench, or maintaining a continuous dewatering operation through a long project cycle, the PST Series delivers the durability and versatility that contractors and site engineers depend on.

The PST Series distinguishes itself within the Wacker Neuson submersible pump range through its broader model selection, covering standard, float-switched, and high-solids configurations. This makes it one of the most adaptable submersible pump families Wacker Neuson offers for medium-duty site dewatering work.

Key Features of the Wacker Neuson PST Series Submersible Pump

Solids Handling Up to 0.75 Inches on PSTS Models

The standard PST2 400 handles solids up to 0.3 inches in diameter, which covers the majority of construction site dewatering scenarios involving disturbed soil and light debris. The PSTS 750 extends this capability significantly, passing solids up to 0.75 inches (19 mm) in diameter. This makes the PSTS 750 suitable for applications involving coarser material, gravel-laden water, and more heavily contaminated site drainage where smaller pumps would block or require frequent intervention to clear the intake.

Multiple Configuration Options

The PST Series is available in five distinct model variants, covering different power ratings, solids handling capacities, intake diameters, and cable lengths. This range allows procurement teams and site managers to select the exact specification needed for a given application rather than compromising with a single-size solution. Float-switched variants within the range add automatic operation capability for sites where unattended cycling is required.

Lightweight and Compact Construction

Despite its heavy-duty positioning, the PST Series remains a genuinely portable pump range. The PST2 400 weighs just 24.9 pounds and the larger PSTS 750 comes in at 41.9 pounds, both manageable for a single operator in most field conditions. The compact footprint of each model supports deployment in tight excavations, confined spaces, and restricted access locations where larger dewatering equipment cannot be positioned effectively.

Built-In Thermal Protection

Every model in the Wacker Neuson PST Series includes built-in thermal protection designed to shut down the motor automatically if overheating is detected due to impeller blockage or abnormal operating conditions. On construction sites where pumps are frequently left running with limited supervision, this protection prevents the motor burnout that can result from blockage events, reducing unplanned downtime and repair costs significantly.

Silicon Carbide Double Mechanical Seals

The PST Series uses silicon carbide-faced double mechanical seals running in an isolated, oil-filled cavity. This sealing arrangement provides continuous lubrication and cooling to the seal faces, protecting the motor from water ingress during extended operation in water containing solids and particulates. Silicon carbide seal faces offer substantially greater wear resistance than ceramic or carbon alternatives, contributing to longer maintenance intervals and lower lifetime operating costs.

Heavy-Duty Strain Relief Power Cord

All PST Series models are supplied with a PVC-sheathed power cord fitted with a heavy-duty strain relief at the pump cable entry point. Cable lengths range from 19.7 feet on the PST2 400 to 32.8 feet on the PSTS 750 models, providing practical reach across most dewatering setups without requiring immediate extension cable use. The strain relief protects the electrical connection from mechanical fatigue caused by repositioning and cord tension in active site conditions.

Technical Specifications: Wacker Neuson PST Series Submersible Pump

Complete technical data for all PST Series model configurations is provided below in both metric and imperial units.

Metric Specifications

Specification PST2 400 PSQ2 500 PST2 400 (Alt) PSTS 750 PSTS 750 (Alt)
Nominal Power 0.4 kW 0.48 kW 0.4 kW 0.75 kW 0.75 kW
Nominal Voltage 110 V 110 V 110 V 110 V 110 V
Nominal Current 5.4 A 6.1 A 5.4 A 10 A 10 A
Phase Not specified Not specified 1 Phase Not specified Not specified
Nominal Frequency 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz
Nominal Speed 3,350 rpm 3,255 rpm 3,321 rpm 3,408 rpm 3,408 rpm
Max Flow Rate 200 l/min 240 l/min 200 l/min 240 l/min 290 l/min
Max Solids Diameter 7 mm 6 mm 7 mm 6 mm 19 mm
Max Delivery Height 12 m 12 m 12 m 12 m 19 m
Intake/Pressure Socket Dia. 50 mm Not specified 50 mm 80 mm 80 mm
Operating Weight 11.3 kg 10.5 kg 11.3 kg 19 kg 19 kg
Length 250 mm 210 mm 255 mm 377 mm 377 mm
Width 185 mm 210 mm 185 mm 185 mm 185 mm
Height 328 mm 326 mm 328 mm 388 mm 388 mm
Cable Length 6 m 10 m 6.2 m 10 m 10 m
Cable Cross-Section 1.3 mm2 Not specified 1.3 mm2 2 mm2 2 mm2
Cable Definition PVC Sheath Not specified PVC Sheath PVC Sheath PVC Sheath
Max Liquid Temperature 40 C Not specified 40 C 40 C 40 C
Shipping Weight 13.2 kg 17 kg 16.8 kg 21.9 kg 21.9 kg
Shipping Length 450 mm 475 mm 450 mm 480 mm 480 mm
Shipping Width 255 mm 257 mm 255 mm 380 mm 380 mm
Shipping Height 217 mm 260 mm 217 mm 290 mm 290 mm

Imperial Specifications

Specification PST2 400 PSQ2 500 PST2 400 (Alt) PSTS 750 PSTS 750 (Alt)
Nominal Power 0.4 kW 0.48 kW 0.4 kW 0.75 kW 0.75 kW
Nominal Voltage 110 V 110 V 110 V 110 V 110 V
Nominal Current 5.4 A 6.1 A 5.4 A 10 A 10 A
Nominal Frequency 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz
Nominal Speed 3,350 rpm 3,255 rpm 3,321 rpm 3,408 rpm 3,408 rpm
Max Flow Rate 52.8 gal/min 63.4 gal/min 52.8 gal/min 63.4 gal/min 69.8 gal/min
Max Solids Diameter 0.3 in 0.2 in 0.3 in 0.2 in 0.75 in
Max Delivery Height 39.4 ft 39.4 ft 39.4 ft 39.4 ft 62.3 ft
Intake/Pressure Socket Dia. 2 in Not specified 2 in 3.1 in 3.1 in
Operating Weight 24.9 lb 23.1 lb 24.9 lb 41.9 lb 41.9 lb
Length 9.8 in 8.3 in 10 in 12.5 in 12.5 in
Width 7.3 in 8.3 in 7.3 in 7.3 in 7.3 in
Height 12.9 in 11.2 in 12.9 in 15.3 in 15.3 in
Cable Length 19.7 ft 32.8 ft 20.3 ft 32.8 ft 32.8 ft
Cable Definition PVC Sheath Not specified PVC Sheath PVC Sheath PVC Sheath
Max Liquid Temperature 104 F Not specified 104 F 104 F 104 F
Shipping Weight 29.1 lb 37.4 lb 36.8 lb 48.2 lb 48.2 lb
Shipping Length 18.1 in 18.7 in 18.1 in 19 in 19 in
Shipping Width 10 in 10.5 in 10 in 13 in 13 in
Shipping Height 8.5 in 10.2 in 8.5 in 10.2 in 10.2 in

PST Series Model Variants and Item Numbers

The Wacker Neuson PST Series is available in five model configurations to suit different site power requirements, solids handling needs, and discharge capacities. All models are rated as high performance submersible pumps capable of handling solids up to 0.4 inches for fast and reliable dewatering.

Model Item Number Nominal Power Max Flow Rate Max Solids Description
PST2 400 5000009112 0.4 kW 52.8 gal/min 0.3 in High performance submersible pump for fast and reliable dewatering
PSG2 500 5000620412 0.48 kW 63.4 gal/min 0.2 in High performance submersible pump for fast and reliable dewatering
PSTF2 400 5000620435 0.4 kW 52.8 gal/min 0.3 in High performance submersible pump for fast and reliable dewatering
PST3 750 5000620440 0.75 kW 63.4 gal/min 0.2 in High performance submersible pump for fast and reliable dewatering
PSTF3 750 5000620441 0.75 kW 69.8 gal/min 0.75 in High performance submersible pump for fast and reliable dewatering

Applications: Where the Wacker Neuson PST Series Submersible Pump Excels

The PST Series is engineered for construction site and civil engineering applications where water contains solids, where continuous duty cycles are required, or where a broader range of model configurations is needed to match specific site conditions precisely.

  • Foundation and Excavation Dewatering: Controlling groundwater inflow during deep foundation work, basement excavations, and pile cap construction where water contains disturbed soil and fine aggregate.
  • Trench Dewatering for Utilities and Pipelines: Managing water ingress in utility trenches during gas, water, and electrical infrastructure installation, where disturbed ground conditions produce turbid water throughout the dewatering cycle.
  • Continuous Construction Site Dewatering: Maintaining dry working conditions across long project cycles on sites with persistent groundwater inflow, where pump reliability and motor protection are essential to avoid operational disruption.
  • Civil Engineering and Road Construction: Dewatering cuttings, embankments, and drainage structures during road building and civil infrastructure projects where variable water quality demands a pump with genuine solids tolerance.
  • Flood and Emergency Response: Rapid deployment for removing water from flooded excavations, structures, and low-lying work areas when site conditions deteriorate due to heavy rainfall or unexpected water table rise.
  • Municipal and Utility Maintenance: Dewatering manholes, stormwater chambers, and underground utility vaults during inspection and maintenance operations where sediment-laden water is the norm.
  • Coarse Solids Applications (PSTS 750): The PSTS 750 variant, with its 0.75-inch solids capacity and 19-meter delivery height, extends the PST Series into more demanding applications involving gravel-laden water and greater vertical lift requirements.

Wacker Neuson PST Series vs. PSA Series vs. PS Series: Choosing the Right Submersible Pump

The Wacker Neuson submersible pump range includes several series with overlapping capabilities. The table below clarifies the key distinctions to help you select the right pump for your project.

Feature PST Series PSA Series PS Series
Water Type Solids-laden, construction dewatering Dirty water, automatic cycling Clean to lightly turbid
Max Solids Diameter Up to 0.75 in (PSTS 750) 0.4 in (rated) 0.3 in (PS3 models)
Automatic Operation Available on float-switched variants Yes, standard No
Max Flow Rate 69.8 gal/min (PSTS 750) 81.9 gal/min (PSA2 800) 130.2 gal/min (PS3 2200)
Max Delivery Height 62.3 ft (PSTS 750) 59.1 ft (PSA2 800) 85.3 ft (PS3 2200)
Model Variants Available 5 variants 2 variants 8 variants
Best Application Solids-tolerant continuous dewatering Dirty water with automatic cycling High-flow general site drainage

For applications requiring higher flow rates and cleaner water handling, the Wacker Neuson PS Series submersible pump offers greater output capacity. For automatic dirty water dewatering at lighter duty cycles, the Wacker Neuson PSA Series submersible pump provides automatic switching with good solids tolerance. For applications involving sludge, mud, or very large solids beyond the PST’s capability, the Wacker Neuson PDT diaphragm pump is the appropriate next step.

How to Set Up and Operate the Wacker Neuson PST Series Submersible Pump

The PST Series is designed for efficient field deployment with minimal preparation. The steps below are provided for general reference. Always consult the official Wacker Neuson operator’s manual before use.

  1. Pre-deployment inspection: Check the power cord for cuts or abrasion damage, confirm all plugs and fittings are secure, and verify the intake screen is free of debris before lowering the pump into position.
  2. Select the correct model: Confirm the model variant matches the site power supply voltage and the expected solids content of the water being pumped. Using a model with insufficient solids capacity for the application will result in frequent blockages.
  3. Position the pump: Lower the PST Series pump into the water using the carry handle. Set it on a stable, level base. Avoid placing the pump directly on deep silt or soft mud that could restrict the intake screen.
  4. Connect the discharge hose: Attach the discharge hose to the pressure socket and route it to the designated discharge point. Keep the hose free of kinks and avoid excessive vertical lift beyond the pump’s rated delivery height.
  5. Connect power: Plug the pump into a properly rated 110V single-phase power supply. Confirm the circuit breaker rating is appropriate for the nominal current draw of the selected model.
  6. Float switch setup (where applicable): On float-switched variants such as the PSTF2 400 and PSTF3 750, ensure the float is positioned and unobstructed so it can move freely in response to water level changes.
  7. Start and monitor: Switch on power and confirm the pump discharges consistently. Monitor for unusual noise or vibration during the first operating cycle. The thermal protection system will shut the pump down automatically if the motor overheats.
  8. Shutdown and maintenance: Disconnect power before retrieving the pump from the water. Flush the intake screen and pump housing with clean water to remove any solids before storage or transport.

Safety Notice: This guidance is provided for general reference only. Always follow the complete instructions in the official Wacker Neuson operator’s manual. Contact Kendisco for access to official documentation, spare parts, or technical support from Ken’s Distributing Company.

Frequently Asked Questions: Wacker Neuson PST Series Submersible Pump

What is the Wacker Neuson PST Series submersible pump used for?

The Wacker Neuson PST Series submersible pump is used for heavy-duty construction site dewatering where water contains suspended solids and particulates. It is deployed across foundation excavations, utility trenches, civil engineering projects, and emergency drainage applications where reliable continuous operation and solids tolerance are required.

What is the maximum solids size the PST Series can handle?

The standard PST2 400 handles solids up to 0.3 inches (7 mm) in diameter. The PSTS 750 variant extends this to 0.75 inches (19 mm), making it suitable for applications involving coarser material and gravel-laden water. Selecting the correct variant for your solids content is important for preventing blockage and protecting the impeller.

What is the maximum flow rate of the Wacker Neuson PST Series?

The highest flow rate in the PST Series is 69.8 gallons per minute (290 liters per minute), delivered by the PSTS 750 model. The PST2 400 delivers up to 52.8 gallons per minute. The right model depends on the volume of water inflow and the required dewatering speed for your specific site conditions.

Does the PST Series include automatic float switch models?

Yes. The PST Series includes float-switched variants, specifically the PSTF2 400 and PSTF3 750, which operate automatically in response to water level changes. These models activate when water rises to the operating level and shut off when it drops, making them suitable for unattended dewatering operations where continuous operator monitoring is not practical.

What is the difference between the PST Series and the PSA Series?

The PST Series covers a wider range of model configurations and offers higher solids handling capacity on the PSTS 750 variant, up to 0.75 inches in diameter. The PSA Series is an automatic-only pump designed for dirty water at lighter duty cycles, with a maximum solids rating of 0.4 inches. The PST Series is the stronger choice when solids content is higher or when a specific float switch or non-float configuration is needed.

What is the difference between the PST Series and the PS Series?

The PS Series is optimized for higher flow rates, up to 130.2 gallons per minute on the PS3 2200, and handles clean to lightly turbid water. The PST Series is built for water with higher solids content and offers float-switched automatic variants. If flow rate is the primary concern and water is relatively clean, the PS Series is the better option. If solids tolerance and operational flexibility are the priority, the PST Series is the appropriate choice.

Where can I purchase the Wacker Neuson PST Series submersible pump?

The Wacker Neuson PST Series submersible pump is available through Kendisco, operating as Ken’s Distributing Company, an authorized Wacker Neuson distributor. Contact Kendisco for current pricing, model availability, and delivery options across all five PST Series variants.

Related Wacker Neuson Submersible and Dewatering Pumps

Ken’s Distributing Company supplies the complete Wacker Neuson water pump range. If you are comparing options or evaluating a different specification, the following products may be relevant to your project needs.