I must confess, I don't see where limit rods are of any value on a joint that is designed to act axially. As Keving said, the joint will only contract when the piping load overcomes the pressure thrust, which will disengage the limit rods.

As far as the pressure thrust on the nozzle goes, the flange should only see the thrust on the bellows area that is outside of the pipe ID. The pressure thrust inside the pipe ID area goes into the pump casing and the impeller.

You will need a pretty stout anchor downstream of the joint as it will need to carry the full pressure thrust of the effective diameter of the joint.