This TiAL Sport replacement spring—identified as the blue 38mm middle spring with a 1.55 marking—is a service component for MVS and MVR valve assemblies. It’s supplied for users who need to replace or adjust the internal spring stack to achieve specific actuation behavior. Use it when servicing TiAL valves to restore correct diaphragm and spring interaction.
TiAL Sport Replacement Spring - MVS/MVR Blue 38mm Middle Spring 1.55