Vacuum Prime

BBA BA80 Silenced Display Img

BA80H Silenced Diesel Drive

3" Diesel Drive Vacuum Prime Centrifugal Pump - Silenced
Max Flow: 200m³/hr
Max Head: 105m

BA100 Silenced Display Pic

BA100 Silenced Diesel Drive

4" Diesel Drive Vacuum Prime Centrifugal Pump - Silenced
Max Flow: 190m³/hr
Max Head: 22m

BA150 Silenced Display Pic

BA150 Silenced Diesel Drive

6" Diesel Drive Vacuum Prime Centrifugal Pumps - Silenced
Max Flow: 490m³/hr
Max Head: 48m

Product Display Pic

BA180 Silenced Diesel Drive

8" Diesel Drive Vacuum Prime Centrifugal Pumps - Silenced
Max Flow: 720m³/hr
Max Head: 41m

BA300 Silenced Display Pic

BA300 Silenced Diesel Drive

12" Diesel Drive Vacuum Prime Centrifugal Pumps - Silenced
Max Flow: 1550m³/hr
Max Head: 24m

BBA BA C Display Img

BBA BA-C Series

High flow & high head vacuum prime dewatering, sewage bypass and flood control pumps.
Sizes: 4" to 30"
Max Head: up to 210m
Max Flow: up to 9,000 m3/hr
Open frame or silenced canopy

BBA BA Electric display img

Electric Drive BA Series

3" to 24" Electric Drive Vacuum Prime Dewatering Pumps
Max Flow: Up to 6500m³/hr
Max Head: 115m
Open Frame or Silenced Canopy

BV display picture

BV Sludge Pumps - Silenced Diesel

6" Diesel Drive Vacuum Prime Sludge Pumps - Silenced
Max Flow: 370m³/hr
Max Head: 22m

BV Open Diesel Display Pic

BV Sludge Pumps - Open Diesel

6" Diesel Drive Vacuum Prime Sludge Pumps
Max Flow: 370m³/hr
Max Head: 22m

Albatross Display Pic

Varisco Albatross

6" Diesel Drive Vacuum Prime Centrifugal Pump - Silenced
Max Flow: 400m³/hr
Max Head: 30m

Super J Display Img

Varisco Super J Series

Vacuum Prime Diesel Drive Pumpsets
Flow: up to 11,500 L/Min
Max Head: up to 39m
Sizes: 4", 6" & 10"

Super Z Display Image

Varisco Super Z Series

Vacuum Prime Diesel Drive Pumpsets
Flow: up to 22,500 L/Min
Max Head: up to 33.5m
Sizes: 4", 6", 8" & 12"

Vacuum Assisted Priming

As everybody in the pumping industry knows, pumps are not compressors and can have major difficulties when air enters the suction line or when dealing with intermittent flows. In fixed installations, these factors can be controlled and measures can be taken to avoid circumstances where air enters the suction hose. With mobile pumping equipment however, this is not the case.

There are a number of types of pumps that are capable of handling air. If we ignore the positive displacement pumps and focus on the centrifugal pumps, we find two types of pumps with self-priming capabilities:

  • Self-priming pumps
  • Auto-prime centrifugal pumps (a.k.a. Vacuum assisted centrifugal pumps)


The self-priming pumps have been around for ages and any pump professional has encountered them in the field somewhere. Although there is still a place for these pumps in today’s market, we have seen how the auto-prime pumps have made their way into the market.

When focusing on the BBA auto prime pumps, the BA range, we see that we are dealing with an end-suction pump that is fitted with a MP diaphragm pump and float box assembly combined with a non-return valve fitted on the discharge port.

Upon starting the engine, the MP vacuum pump creates a vacuum in the pump by removing the air. As the discharge line is sealed off by the non-return valve, this vacuum draws the fluid through the suction line into the pump casing. As soon as the pump casing is filled with water, the centrifugal pump takes over and starts discharging the fluid through the non-return valve into the discharge line. At that same moment, the float rises up thereby closing the priming system and preventing carry over of the fluid. Should the flow stop for any reason, the float will drop down again, re-starting the priming sequence.

BA Pump Cutaway

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