Thanks Borzki & Pat for your response.

However, considering pump with spring is always risky option. we need to model basplate/motor etc properly in CAESAR II simulation.

Instead i thought to put the exchanger on spring.

At present, i had considered PTFE hinged bellow & PTFE lateral bellow in analysis.

Whether PTFE bellows are ok for this type of slurry with high flow rates or we need to consider some other options (rubber or metallic with liners etc) ?

thanks