Self-priming plastic pumps

Self-priming centrifugal pumps for industrial plants to be used when conventional horizontal pumps (flooded
suction) or vertical pumps with immersed column cannot be used. The main feature of this type of pump is the suction of liquids from a maximum negative suction of 5 meters, due to a priming chamber (PA) or to a single chamber auxiliary priming tank (SP).

PA self-priming pumps

selfpriming pumpPA-SP

  • With self-priming chamber.
  • Maximum suction lift: – 4 m.
  • Maximum flow-rate: 280 l/min.
  • Maximum head: 16 m w.c.
  • Materials: PP, PVC.

More details

SP self-priming pumps

SP self-priming pumps

  • With auxiliary priming tank.
  • Maximum negative suction head: – 5 m.
  • Maximum flow-rate: 90 m³/h.
  • Maximum head: 43 m w.c.
  • Materials: PP, PVC, PVDF.

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General technical features

  • Compact design ideal for confined spaces.
  • For installations above the free surface of the liquid.
  • Material in direct contact with liquids: corrosion resistant plastic.


A. PP, PVC, PVDF coated bolts and nuts.
B. Components molded or machined from corrosion resistant thermoplastics.
C. Gaskets made of EPDM, FPM or PFA coated.
D. Shaft sleeved in thermoplastic material (PP, PVC, PVDF).
E. Ceramic or Silicon Carbide seal rings.
F. PTFE bellow.
G. PFA coated spring.
H. PTFE sealing washer.

PA self-priming centrifugal pumps

Q max l/min H max m w.c. kW Suction lift Materials
PA20 60 5 0.25 – 1.5 PP – PVC
PA30 160 14 1.1 – 3 PP – PVC
PA40 280 16 1.5 – 4 PP – PVC

More details on PA self-priming pumps.

SP self-priming centrifugal pumps

Q max m³/h H max m w.c. kW Mechanical seal Suction lift
single double
SP30 14 16 0.55 – 1.1 si si – 2.5
SP40 23 18 2.2 si si – 2.5
SP50 38 24 2.2 – 3 si si – 3
SP70 54 25 4 si si – 4
SP80 81 41 5.5 – 9.2 si si – 4
SP100 90 43 11 si si – 5

More details on SP self-priming pumps.

Performance curves

Savino Barbera hydraulic design, typical of a production conceived to be acid resistant, provides:

  • Maximum negative suction head: – 5 meters.
  • Maximum flow-rate of 280 l/min (PA pumps) and 90 m³/h (SP pumps).
  • Impellers and pump bodies completely free of metal inserts for maximum chemical resistance.
  • Impellers with various diameters and motors with diversified power, voltage and frequency features.

userblock32 PA self-priming pumps download
userblock32 SP self-priming pumps download

Savino Barbera Mechanical seal

The mechanical seal of our chemical pumps is a seal for rotating shafts exclusively designed by Savino Barbera.
It was conceived to be fully corrosion resistant and has the following features:

  • Very simple structure: only three elements.
  • Single mechanical seal, internally assembled and balanced.
  • Internal mounting for maximum cooling.
  • Sliding faces are lubricated by the pumped liquid.
  • Self-cleaning due to the centrifugal force.
  • Ready-to-fit seal (no need for registrations).

icona-tenuta See the advantages of our mechanical seals

Corrosive liquids

Here is a list of some aggressive liquids compatible with our self-priming pumps:

  • Pumps for sulfuric acid.
  • Pumps for caustic soda.
  • Pumps for hydrochloric acid.
  • Pumps for muriatic acid.
  • Pumps for hydrogen chloride.
  • Pumps for sodium hydroxide.
  • Pumps for sodium bisulfite.
  • Pumps for chromic acid.
  • Pumps for sodium hypochlorite.
  • Pumps for bleach.
  • Pumps for hydrofluoric acid.
  • Pumps for ferric chloride.
  • Pumps for sodium chloride.
  • Pumps for aluminium chloride.
  • Pumps for polyaluminium chloride.
  • Pumps for phosphoric acid.
  • Pumps for acetic acid.
  • Pumps for nitric acid.
  • Pumps for aqua regia.
  • Pumps for sea water.
  • Pumps for copper sulfate.
  • Pumps for citric acid.
  • Pumps for formic acid.
  • Pumps for lactic acid.
  • Pumps for peracetic acid.
  • Pumps for sulfamic acid.
  • Pumps for sodium bisulfite.
  • Pumps for sodium nitrate.
  • Pumps for sodium pyrophosphate.
  • Pumps for sodium sulfate.
  • Pumps for ammonia.
  • Pumps for chemical fertilizers.
  • Pumps for pesticides.
  • Pumps for industrial deodorizers.
  • Pumps for glycerine.
  • Pumps for potassium hydroxide.
  • Pumps for caustic potash.
  • Pumps for potassium persulfate.
  • Pumps for potassium permanganate.
  • Pumps for salicylic acid.
  • Pumps for tartaric acid.
  • Pumps for sulphur and derivatives.
  • Pumps for fuels.
  • Pumps for urea.
  • Pumps for ADBLUE.
  • Pumps for biodiesel.
  • Pumps for solvents.
  • Pumps for paint.
  • Pumps for ink.
  • Pumps for cleaning agents.
  • Pumps for industrial detergents.
  • Pumps for distilled water.
  • Pumps for peroxide.
  • Pumps for purified water.
  • Pumps for dyes.
  • Pumps for chemical additives.
  • Pumps for chemical extracts.
  • Pumps for photographic film development.
  • Pumps for brine.

Self-priming pumps installation charts

Installation charts for self-priming plastic pumps produced by Savino Barbera:

Proper use of self-priming pumps

Here are ten suggestions for a correct use of plastic self-priming pumps:

  1. The priming chamber must always be full of liquid before the pump starts operating.
  2. After the initial filling, the priming chamber must always remain full of liquid.
  3. During suction, make sure that the pump is not powered by liquid mixed with any air, vapor or foam.
  4. The pump must never operate or be started when the discharge valve is completely closed.
  5. Avoid filters during suction to prevent any reduction of the pump capacity.
  6. Install an efficient level control device to avoid intake of air during suction.
  7. Pipes must be properly supported not to encumber the pump.
  8. The suction pipe must be as short as possible; it cannot be horizontal and must have an ascending incline towards the pump.
  9. The delivery pipe must be always be descending toward the pump.
  10. The performance of a self-priming pump are negatively affected by on-off valves, non-return valves, tight curves and pipes diameters smaller than suction and discharge nozzles.

Savino Barbera srl

Via Torino 12
10032 Brandizzo, ITALY
P.IVA 00520820010
R.I.TO 272-1974-2166
REA 489443
Cap. soc. 48000€ i.v.

Tel +39 011 913.90.63

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