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The SLRT pump is a positive displacement rotary lobe pump designed to discharge food and sanitary products from a truck cistern as it can be driven by a hydraulic motor. The pump is characterised by a compact design, reduced weight and interchangeable connections to facilitate its assembly to a truck.

SLRT rotary lobe truck pump is designed to pump liquid products with or without delicate solid particles that require gentle pumping causing no damage to the product.

Operating principle

SLRT rotary lobe truck pumps basically consist of bi-lobe rotors which rotate synchronously inside a casing without touching each other.
As the rotors rotate, the spaces between the lobes and the casing are successively filled with the product and a fixed amount of the displaced product is conveyed to the discharge nozzle. The pumped product forms a continuous flow thanks to the clearances between the lobes and the pump casing, thus, ensuring an efficient pumping.

Design and features

The pump casing and the lobes are manufactured in stainless steel. The design of the attachments of the lobes is sanitary. The shaft is hollow with spline SAE 6B 1˝. The SLRT rotary lobe pump is supplied with a sanitary mechanical seal. It is characterised by easily cleaning and maintenance.


Parts in contact with the product AISI 316L
Support GG 25
Legs AISI 304
Gaskets EPDM

Mechanical seal:
Rotary part SiC
Stationary part C
Gaskets EPDM

Internal surface finish Ra<0,8 µm
External surface finish Matt


Mechanical seal: SiC/SiC or TungC/SiC.
Shaft seal: PTFE.
Gasket: FPM.
Relief valve on the front cover or external bypass.
Bare shaft for electrical drive.
Vertical support.
Connections: Clamp, SMS, RJT, etc.
Heating jacket.

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