Features API 6D design Fire-safe Certified API 607 Blowout-proof stem Adjustable Stem packing, anti-static device Integral ISO mounting pad for actuation Integral locking device NACE to MR-01-75 Body WCB, A105, LF2, LCC & 316SS Seat Reinforced teflon, Viton, Devlon, Nylon or Peek Ball 316, 304, LF2 & A105+ENP