Pompe Casali · gear pump manufacturer in Bologna, Italy, since 1955
Viscous Fluid Pumpsby Pompe Casali

Flanged pumps, high flow rates

NAV series flanged gear pumps

The NAV series is our flanged gear pump for transfer duties. It handles fluids up to high viscosity and reaches substantial flow rates and delivery pressures. It is indicated for the petrochemical sector and for industry in general.

120 – 1910cm³/rev
54 – 2770l/min
9models

NAV series: models, displacements and flow rates

NAV series: models, displacements and flow rates
Modelcm³/rev450 rpm950 rpm1450 rpm
1 NAV12054114174
1 1/2 NAV17478.3165252
2 NAV-a270121256391
2 NAV-b375169356544
2 1/2 NAV503226478729
3 NAV7543397161093
3 1/2 NAV10054529551457
4 NAV150567714302182
5 NAV191085918142770

Theoretical flow rates in l/min.

Built for transfer of viscous fluids

The NAV is a positive displacement, self-priming pump with flanged ports. It moves a fixed volume at every revolution, so the flow rate holds when the product is thick or the delivery line is long. You use it to unload tankers, fill storage tanks and feed process lines.

Fluids handled by the NAV series

Fuel oils and thermal oils, lubricants, petrol, diesel, solvents, resins, isocyanates, paints, soaps, chocolate and molasses. Typical installations include depots for fuel oil and diesel, circuits for thermal oil, plants for resins and storage of molasses in feed mills.

Nine models and choice of speed

Nine sizes cover displacements from 120 to 1910 cm³/rev. The model depends on the flow rate and on the speed the viscosity allows: the thicker the fluid, the lower the speed. Our technical office in Bologna, Italy, works out the size and the motor power with you.

Bodies are available in cast iron or AISI 316 stainless steel. ATEX documentation is available on request for flammable fluids.

NAV or CR?

If the product solidifies at room temperature, choose the CR series, which has a heating jacket around the pumping chamber. For small flow rates and metering, look at the ZV series. For edible oils and other fluids that flow when cold, the NAV is the usual choice.

Supply options

Bare shaft or complete unit

Bare shaft – Pompe Casali 12 ZV
Bare shaftFoot mounted (B3) or flange mounted (B14), ready to couple to your own drive.
Electric pump unit – Pompe Casali 12 ZV
Electric pump unitPump, guarded coupling and electric motor aligned on a baseplate.
Geared motor unit – Pompe Casali 12 ZV
Geared motor unitLow speed for the thickest fluids: creams, molasses, chocolate, bitumen.

Frequently asked questions

What flow rates does the NAV series cover?

From 54 to 2770 l/min across nine models. The table on this page shows the figures for each size.

How is the NAV series supplied?

As a bare shaft pump, as an electric pump unit on a baseplate with coupling and guard, or with a geared motor for low speeds.

Technical office

Talk to the people who build them

Fluid, flow rate, temperature: three figures are enough for a first indication of the model. We reply in English.

On WhatsApp you can also send a photo of the nameplate or a diagram of your system.
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