Centrifugal pumps · FL91CAI · FL92CAI · FL93CAI series
FL90CAI industrial self-priming centrifugal pump
Self-priming stainless steel pump: an AISI 316 centrifugal pump for transferring fluids in the food, chemical and winemaking industries when flooded suction is not possible. It lifts from 3.5 to 6 m in 2-3 minutes, delivers up to 50 m³/h and connects with GAS thread.
- 50 m³/hMaximum flow rate of the series
- 61 m headMaximum head
- 3.5–6 mSuction lift
- 2-3 minPriming time
- 0.75–22 kWMotor at 2,900 rpm
- AISI 316Body, impeller and shaft
- Wetted parts in AISI 316
- Hygienic mechanical seal
- IP55 motor
- Food or industrial finish
Prefer to speak to a technician? Call 972 58 20 40 or write to inoxmim@inoxmim.com
What is the FL90CAI industrial self-priming centrifugal pump for?
Self-priming centrifugal pumps are used when the pump cannot work with flooded suction: the liquid is below the suction, in a tank or a tanker. A standard centrifugal pump will not prime in these conditions; a self-priming pump evacuates the air from the suction pipe and starts pumping on its own.
The FL90CAI is the industrial version of InoxMIM's self-priming pumps, a self-priming stainless steel pump with GAS threaded connections and a graphite/stainless steel or tungsten seal. It comes in three models: the FL91CAI lifts up to 3.5 m, the FL92CAI up to 4 m and the FL93CAI up to 6 m, in all cases in 2-3 minutes. The body, impeller, shaft and piping are made of AISI 316 stainless steel, and the simplicity of its parts makes maintenance easier.
This is the right pump if…
- The pump is located above the liquid level and cannot rely on flooded suction.
- It empties tanks or tankers, or works with lines that carry air.
- It transfers chemical, winemaking or food fluids compatible with AISI 316.
- Your installation uses GAS threaded piping and you need up to 50 m³/h.
Choose other equipment if…
- You need a sanitary design with DN connections: the FL80CAI sanitary self-priming pump has the same curves.
- The pump can work with flooded suction and you need more flow: the FL30CI industrial centrifugal pump, up to 90 m³/h, is better.
- The product is viscous: a self-priming positive displacement pump is the better choice, such as the FL-RF flexible impeller pump.
- You need a bidirectional pump with high vacuum capacity for clean fluids: an FL-AL liquid ring pump is better.
Applications by industry
Where the FL90CAI is usually installed, whenever flooded suction is not possible:
Chemical industry
Transfer of chemicals compatible with AISI 316 from tanks, drums or tankers.
Winemaking
Wine transfer and emptying of tanks and tankers.
Food industry
Transfer of food liquids from tanks or tankers located below the pump.
CIP return
Return of the cleaning solutions, where the suction line draws in air.
Features and benefits
Self-priming
Draws from 3.5 to 6 m depending on the model and primes in 2-3 minutes.
GAS threaded connection
From 1½" on the FL91CAI to 3" on the FL93CAI, ready for industrial piping.
Semi-open impeller
Semi-open impeller as standard; open impeller on request.
Hygienic mechanical seal
Graphite/stainless steel or tungsten/tungsten faces, with NBR, nitrile or Viton seals.
Few parts
The simplicity of the components makes assembly and maintenance easier.
Three sizes
From 0.75 to 22 kW, with impellers from Ø 110 to 240 mm to match the pump to the duty point.
Series models and performance curves
Choose the model by the suction lift, flow rate and head you need. For other impeller and motor combinations, please contact us.
| Model | Motor | Impeller | Max. flow rate | Max. head | Suction | Suction / discharge connections |
|---|---|---|---|---|---|---|
| FL91CAI | 0.75–2.2 kW | Ø 110–140 mm | 20 m³/h | 21 m head | 3.5 m | DN 40 / DN 40 (1½" GAS) |
| FL92CAI | 1.5–5.5 kW | Ø 130–185 mm | 30 m³/h | 40 m head | 4 m | DN 50-65 / DN 50 (2"-2½" / 2" GAS) |
| FL93CAI | 5.5–22 kW | Ø 140–240 mm | 50 m³/h | 61 m head | 6 m | DN 65-80 / DN 65 (2½"-3" / 2½" GAS) |
Maximum values from the FLUIDMIM catalogue curves at 2,900 rpm and 50 Hz. Priming time: 2-3 minutes on all three models.
Technical data
Materials
Body, impeller, shaft and piping
AISI 316 stainless steel
Lantern
AISI 304 stainless steel
Gaskets
NBR, nitrile or Viton (FKM)
Hydraulics
Impeller type
Semi-open (open optional)
Maximum flow rate
50 m³/h (FL93CAI)
Maximum head
61 m head (FL93CAI)
Suction lift
3.5 m / 4 m / 6 m
Priming time
2-3 minutes
Mechanical seal
Type
Hygienic
Seal faces (stationary / rotating)
Graphite / stainless steel or tungsten / tungsten
Other materials
On request
Motor
Power
0.75 to 22 kW
Speed
2,900 rpm at 50 Hz
Protection
IP55
Power supply
50 Hz · 220-380 V / 380-690 V
Finish and connections
Finish level
Food or industrial
Standard connections
GAS or DIN 11851
Other connections
DIN 2576 flange, Clamp, SMS, RJT
Options and customisation
Open impeller
As an alternative to the standard semi-open impeller, depending on the product.
Other connections
DIN 2576 flanges, Clamp, SMS or RJT, as well as GAS or DIN 11851.
Double seal with thermosyphon
Double mechanical seal cooled by thermosyphon, for products that crystallise or stick to the seal faces.
Control panel
Supplied with the electrical panel for starting and stopping the pump.
Baseplate or trolley
Fixed mounting on a baseplate or on a mobile trolley so the pump can be used at several points in the plant.
Other centrifugal pumps
Frequently asked questions about the FL90CAI industrial self-priming centrifugal pump
How high can an FL90CAI self-priming centrifugal pump lift?
It depends on the model: the FL91CAI lifts up to 3.5 m, the FL92CAI up to 4 m and the FL93CAI up to 6 m. In all three cases priming takes 2-3 minutes, according to the catalogue curves.
What is the difference between the FL90CAI and the FL80CAI?
They have the same performance curves and the same suction lift. The FL90CAI is the industrial version, with GAS threaded connections and a graphite/stainless steel or tungsten/tungsten seal. The FL80CAI is the sanitary version, with DN connections and seals that can be EPDM.
Which model do I need?
The one that covers your suction lift and your duty point. The FL91CAI delivers up to 20 m³/h and 21 m head (water column); the FL92CAI, 30 m³/h and 40 m head; and the FL93CAI, 50 m³/h and 61 m head.
Do you need to fill the pump before the first start-up?
Yes. A self-priming centrifugal pump needs its body filled with liquid to start drawing; from then on it evacuates the air from the pipe on its own. It is advisable to check this after every complete drain or maintenance work.
Can it run dry?
No. Being self-priming does not mean it can run without liquid: the mechanical seal is cooled and lubricated by the product itself. If the installation could run out of liquid, a level or pressure sensor to stop the pump is advisable.
What connections can it have?
As standard, GAS or DIN 11851: 1½" thread on the FL91CAI, 2" to 2½" on the FL92CAI and 2½" to 3" on the FL93CAI. On request it is supplied with DIN 2576 flanges, Clamp, SMS or RJT.
Request a quote for the FL90CAI self-priming stainless steel pump
Equipment: FL90CAI industrial self-priming centrifugal pump
Tell us which product you are pumping, the flow rate, the head, the suction lift (height difference between the liquid and the pump), the length of the suction pipe, the temperature and the viscosity. With that information we will recommend the right model.