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This TiAL Sport replacement spring is a direct-fit service part for MVS and MVR valves, specified as the red spring with a .4 bar rate. Swap it into compatible valves to change the opening threshold and tune recirculation or venting behavior. It’s offered as a straightforward service item for maintaining or adjusting valve response without replacing the entire assembly.
TiAL Sport Replacement Spring - MVS/MVR Red .4 bar
