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

Bitumen spreaders · road tankers · storage tanks

Bitumen pumps for spreaders and tanks

A spreader pump has to load the tank, keep the binder circulating, discharge it and sometimes transfer it from one tank to another. The Pompe Casali SB series does all of this with one self-priming gear pump flanged straight onto the tank. It is designed and built in Bologna, Italy.

Bitumen pumps for spreaders and tanks – Pompe Casali

A bitumen pump that sits inside the tank

The SB series flanges directly onto a fixed or mobile tank, with the pump body immersed in the product. The pump stays at the temperature of the bitumen around it, so the gears are surrounded by hot binder and are ready to turn. The pump is self-priming and positive displacement, which gives a flow rate tied to speed and a spreading rate you can control from the drive.

Two built-in valves, four operations

Two valves are built into the pump and can be manual or motorised. By setting them you load the tank, recirculate inside it, discharge, or transfer product without passing through the tank. On a spreader this takes the place of external valves and pipe runs, each of which would need heating and each of which could block.

An integrated heating circuit warms the pump before start-up.

Gear maintenance without emptying the tank

The gears can be removed without draining the tank. For a contractor in the middle of the surfacing season this means the load of hot bitumen stays where it is while the pump is serviced.

Five models, SB 200 to SB 1000, cover theoretical flow rates from 57 to 1093 l/min, so the same design suits compact spreaders and large road tankers.

Spreaders, tankers and storage tanks: what to send us

Machine builders usually send us the tank drawing, the binder and the flow rate required. Our technical office in Bologna confirms the model, the valve actuation and the drive speed. Beyond hot bitumen, we normally propose the SB series for bitumen emulsions and tar on road machinery. For pipework away from the tank there is the jacketed CR series.

Send your drawing on WhatsApp or fill in the quote form and we will come back with a proposal.

Recommended series

Which pump for: Bitumen spreaders

SB series: models, displacements and flow rates
SB series: models, displacements and flow rates
Modelcm³/rev450 rpm950 rpm1450 rpm
SB 20012757121184
SB 400270121250380
SB 600375168356543
SB 750503226478729
SB 10007543397161093

Theoretical flow rates in l/min.

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

Can the SB pump load the tank by itself?

Yes. The SB series is self-priming, and tank loading is one of the operations selected with its two built-in valves.

Are the valves manual or motorised?

Either. The two built-in valves are supplied in manual or motorised form, according to how your machine is controlled.

Do I have to empty the tank to service the pump?

No. The gears of the SB series can be removed without emptying the tank.

How is the pump heated before start-up?

The SB series has an integrated heating circuit. The pump body is also immersed in the tank, so it shares the temperature of the bitumen.

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.
WhatsAppRequest a quote