The Cla-Val X54TD is a specialty designed device installed on the downstream side of the bypass valve(s) in a Pressure Reducing Station. The device ensures the velocity rate at which the transition happens where the main line valve begins to open. The velocity is governed by the pressure reducing setpoint gap between the pressure reducing valves installed in the main line and the bypass line. Without the Cla-Val X54TD there is an increased risk of the bypass valve(s) flowing excessively high velocities that could cause damage to the valve and decrease the valves lifespan.