ROTARY LOBE PUMPS
Rotary lobe pump use timing gears to eliminate contact between the rotors, which allows their use on non-lubricating fluids. These pumps offer low shear and gentle handling of the liquid to minimize product degradation.
https://anivaryapumps.com/rotary-lobe-pump/
https://anivaryapumps.com/rotary-lobe-pump/