Why bitumen needs a heated gear pump
Bitumen is pumped hot, and its viscosity climbs steeply as it cools. A positive displacement gear pump delivers a fixed volume per revolution, so the flow stays predictable while the viscosity moves with temperature. The weak point is the stop. Any bitumen left in a cold pump solidifies and locks the gears.
A heating jacket solves this. A heating fluid such as thermal oil circulates around the pump body and brings the bitumen inside back to pumping temperature before you start the motor.
CR series: bitumen pump with full heating jacket
The CR series has a jacket that completely surrounds the pumping chamber. It was designed for products that are solid at room temperature, such as bitumen, pitch, compounds and bituminous mixes. Ten models cover theoretical flow rates from 14.5 to 4292 l/min.
You can order it bare shaft, as a motor pump unit on a baseplate with coupling and guard, or with a geared motor for low speeds.
SB series: bitumen pumps mounted on the tank
On spreaders and tanks the pump works best inside the hot product. The SB series flanges directly onto a fixed or mobile tank with its body immersed, and two built-in valves handle tank loading, internal recirculation, discharge and transfer. Our page on bitumen pumps for spreaders and tanks explains how it works.
If you apply cold binders, read about bitumen emulsion pumps as well.
Choosing the right bitumen pump
Tell us the grade of bitumen, the working temperature, the flow rate and where the pump will be installed. Our technical office in Bologna sets the model, the speed and the drive. ATEX documentation is available on request.
Write to us on WhatsApp or use the quote form on this page.
