PAS HF - Vacuum prime centrifugal pumps

The pump system consists of a centrifugal pump and a separator, which enables air to be separated from the liquid and be sucked by a vacuum pump - making automatic priming possible. Even with suction heights of several feet the machine rapidly evacuates the air from the suction pipe and starts to pump. Additionally, thanks to the semi-open impeller, the PAS HF range is also suitable for pumping liquids with solids in suspension.

The PAS 100 HF Atlas Copco pump is designed to withstand toughest applications and delivers best in class pumping efficiency. One of the most common area of utilization is the Construction dewatering and municipal market segment where reliability, serviceability and versatility is the key to provide a customized solution. Other suitable applications can be found within the Industry, Mining or Oil & Gas segment. Atlas Copco pumps are packed with features that not only meet, but exceed the needs of our customers.

View and/or Download PAS 100 HF T4F KD: Brochure / Datasheet


Model PAS 100HF T4F
Qmax 1230 USgpm
Hmax 164 ft
Q max eff. 1000 USgpm
Eff. max 70%
Suction port 4" Flange - 150# ANSI
Delivery port 4" Flange - 150# ANS
Impeller type Semi-open, 2 vane
Impeller diameter 10"
Solids handling 3"
Casing EN-GJL-200 cast iron
Impeller EN-GJS-500 ductile iron
Wear Plate EN-GJL-200 cast iron
Shaft 39NiCrMo4 steel
Mechanical Seal faces Tungsten carbide / Tungsten carbide
Elastomers VITON
Check Valve ASTM A536 ductile iron + NBR rubber flap
Separator EN AC-42100 ( AlSi7Mg0.3) - Aluminum
Priming System  
Vacuum pump  
Vacuum pump type Diaphragm
Nominal air capacity 29.6 cfm
Max vacuum - 26.6 inHg
Drives Link belt

Make Kohler
Model KDI 1903TCR
Type Diesel turbo common rail
Displacement 1.9 Liter (114in³)
No. cylinders 3
Cooling Liquid with radiator
Rpm type Variable
Max operating speed 2.200 rpm
US emissions EPA Tier 4F
Starting Electric
Engine system voltage 12 V
Engine Power rating 49 HP
Control panel  
Model PW 750
  Manual operation
  Automatic operation: start-stop with transducers or floats
  FleetLink Optional
Technical data  
Material ASTM A36 steel
Coatings Polyester powder, average thickness of 3 MIL
Features Lifting beam, PE-Fuel tank and Fender
Battery Acid charge Pb-Ca maintenance free, 12 V - 1150 CCA
Fuel tank capacity 30 USG Net Volume
Fuel consumption 1.8 US Gal/hr @2200 rpm @BEP
Dry weight 2735 lbs
Wet weight 2990 lbs


Speed Impeller Dia. Style Solids Dia. Ns Suction Discharge No. Vanes
Various 10" / 250 mm Open 3" / 76 mm 2000 rpm 4" / 100 mm 4" / 100 mm 2

flow limits graph


Solids handling
Easy maintenance 
Polyethylene Fuel tank
The 10" impeller with 75% efficiency at B.E.P. provides best pumping result with minimal efforts Semi-open impeller type with solids handling capability of 1.8" for trouble free operation Hinged cover for direct access to the impeller and pump volute Corrosion-free PE tank provides longer lifetime and avoids tank cleaning due to oxidation

Applications & Use Cases

Sewer Bypass / Lift Station Bypass

PAS 100 sewer bypass

Bypass pumping involves maneuvering liquid (sewage, trash, water, etc.) around a damaged pipe without interrupting the flow of liquid while the repairs are underway. This process is critical for many rehab projects, as it allows for a pipe to be repaired or replaced without spillage on public or private property. Bypass pumping uses a PAS HF, which is a centrifugal pump that can handle liquids containing solids of up to 1.8". Because of this, the PAS HF pump is well suited for bypassing in construction, industrial, and municipal applications.

Bypass is common in these sectors:

  • Municipalities
  • Civil Construction
  • Industry

Digestor Cleanouts

PAS 100 draining sludge from treatment facility

Solids can build up at wastewater treatment plants or places a digestor is used over time as they settle out with solids. The build-up of solids, sludge, and stringy material in digester tanks can negatively impact the operation of digesters. This requires the right pump, usually with an open impeller to get a clean, easily flowing body of water.

Areas for Digestor cleanouts :

  • Aeration basin
  • Lift station
  • Digester Cleaning
  • Sludge Removal


Water transfer in quarry and mine

Site dewatering is the process of taking and removing water from construction sites, quarries, mine shafts, or any other area. Extracting water from these areas is crucial to maintain a safe working environment as well as reduce any costly delays.

Due to the PAS' ability to handle pumping high volumes, this pump is able to displace not only water, but sewage, industrial waste, chemicals, and even some solid products.

Areas for site dewatering :

  • Quarries
  • Construction sites
  • Mine shafts
  • Municipalities

Applications & Use Cases

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