This unique design is used in liquids in which the motor cannot be submerged directly, such as ammonia. The motor is encased in a sealed housing that has nitrogen gas flowing into it from the top of the tank or suction vessel to keep the motor dry and inert, thereby providing a very safe environment.

The hydraulic (wet) end with the impeller(s) and inducer is driven by a magnetic coupling located between the motor and wet end upper shaft. The motor side half of the magnetic coupling is housed inside the sealed motor housing adjacent to stainless steel membrane. This allows the wet end to be driven while keeping the motor out of the fluid.

The ACR/ACC type can be installed inside it's own suction vessel much like the ECC type or installed into a storage tank in the same fashion as an ECR type. It can also be installed inside the cargo tanks for chemical tankers.