Thread: Exhaust Valve must be sodium filled.
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Old Jan 31, 2010 | 10:06 AM
  #6  
Karlos G's Avatar
Karlos G
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Yes as xr2whishy said it is only the Series 1 RST's that had sodium filled exhaust valves so they are not needed.
Standard Valves or Stainless Steel valves are what most of us use without any problems
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