Forward Acting

FAS (Forward Acting Scored)
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FAS (Forward Acting Scored) NA: Product Image
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  1. FAS Specifications (pdf - 73.4Kb)
  2. FAS Min-Max Table (pdf - 139.4Kb)
  3. FAS Installation Guide (pdf - 125.3Kb)
  4. CE Marked FAS Instructions (pdf - 38.6Kb)

The Oseco FAS (Forward Acting Scored) Rupture Disc is designed and manufactured for high-performance and demanding rupture disc applications.The FAS is scored after the forming of its high crown.  This process yields a high-performance disc to withstand the most difficult applications.  The FAS offers a smooth non-scored surface toward the process media.  This limits product accumulation on the disc and reduces the risk of polymerization and crystallization of media on the disc surface.  The FAS rupture disc has a 90% operating ratio for applications requiring a high operating to set pressure ratio.  Due to the high operating ratio and non-fragmenting design, the FAS rupture disc is an excellent choice for isolation of safety relief valves.  Installing the leak-tight FAS rupture disc between the process media and the safety relief valve protects the valve and prevents emissions to the atmosphere.·        

  • Sizes 1" through 18"
  • Standard materials of construction: 316 Stainless Steel, Nickel 200/201, Inconel®-600, Monel®-400, and Hastelloy® C-276        
  • Excellent for gas or liquid service applications.       
  • Lowest KR in the industry means less flow restriction 
  • KRG 0.223 KRL 0.19
  • Non-fragmenting design
  • "Fail-safe" A damaged or incorrectly installed FAS will always burst at less than the rated pressure.
  • Elevated temperatures up to 900º F        
  • Burst tolerance ±5% > 40 psig & ±2 psig ? 40 psig        
  • Non-torque-sensitive 
  • Operates at 90% of stamped burst pressure
  • PFA-grade Fluoropolymer liners available for atmospheric and/or process sides