OsecoElfab’s Fluoropolymer-Booted PRDI Rupture Disc Holder

The OsecoElfab Fluoropolymer-Booted PRDI Insert Rupture Disc Holder is a reduced diameter, flat-faced flange assembly that bolts between standard ANSI pipe flanges and fits within the bolt circle.  The Fluoropolymer-Booted PRDI is used in applications where aggressive corrosives are present. A solid PTFE or PFA insert is pressed into the inner diameter of the holder, ensuring the entire wetted surface of the inlet ring is a solid block of fluoropolymer. The Fluoropolymer-Booted PRDI has a flat seat and uses a raised nubbin sealing surface to create a metal-to-metal “bite” seal between the Fluoropolymer-Booted PRDI inlet, and the rupture disk inlet seat surface.  This holder allows the rupture disc to be preassembled to ensure it is properly seated before installation into the pressure systems. Fluoropolymer-Booted PRDI Insert Holders are available in standard ANSI flange ratings up to 8″.

  • The Fluoropolymer-Booted PRDI is for use with the PRO+, PRO+KRGL, PCR, PSR and PLR rupture disks.
  • The Fluoropolymer-Booted PRDI is compatible with the AMS, SVT, and LPSF burst disk indicator sensors.
  • The Fluoropolymer-Booted PRDI is available in line sizes ranging from 1 inch diameter all the way up to 8 inches diameter.
  • The Fluoropolymer-Booted PRDI is compatible with service temperatures ranging from cryogenic temperatures all the way up to 500 degrees F.
  • The Fluoropolymer-Booted PRDI is available in all OE standard materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276).  Other materials may be available or offered on request. The inlet ring material can be specified as a different material than the outlet ring material.
  • The Fluoropolymer-Booted PRDI works well in gas or vapor services, as well as liquid or two-phase services.
  • The Fluoropolymer-Booted PRDI may work well in sticky or fouling services, although alternative holder designs such as the TopHat Assembly are recommended in such environments.
  • The Fluoropolymer-Booted PRDI is considered non-torque sensitive. While proper torque procedures should be followed during installation, the Fluoropolymer-Booted PRDI is fairly tolerant of over-torque, or slightly uneven torque of the bolts on the companion flange.
  • The Fluoropolymer-Booted PRDI typically uses a single locater pin, installed by the factory in the inlet ring, to ensure proper rupture disk orientation within the holder assembly. Each rupture disk, manufactured for installation into a Fluoropolymer-Booted PRDI holder, will have a notch punched out of its seating surface to ensure the rupture disk must be oriented correctly, in order to be installed into the Fluoropolymer-Booted PRDI at all.
  • The Fluoropolymer-Booted PRDI is available in ANSI 150#, ANSI 300#, and ANSI 600# Flange Classes
  • The Fluoropolymer-Booted PRDI is available in Raised Face, Flat Face, Crush Ring, and RTJ flange facing arrangements.
  • The Fluoropolymer-Booted PRDI can be tapped for instrumentation on the outlet ring.
  • Kr values are specific to the rupture disk model used. As such, the Fluoropolymer-Booted PRDI does not have its own, unique Kr value.
  • Operating Ratios are specific to the rupture disk model used. As such, the Fluoropolymer-Booted PRDI does not have its own, unique operating ratio.
  • Manufacturing Ranges are specific to the rupture disk model used. As such, the Fluoropolymer-Booted PRDI does not have its own, unique manufacturing range.
  • Burst Tolerances are specific to the rupture disk model used. As such, the Fluoropolymer-Booted PRDI does not have its own, unique burst tolerance.
  • Fragmentation is specific to the rupture disk model used. As such, the Fluoropolymer-Booted PRDI is neither fragmenting nor non-fragmenting.
  • A 1” Fluoropolymer-Booted PRDI has a standard overall height of 1.75”. Custom height Fluoropolymer-Booted PRDI’s are available upon request.
  • A 1.5” Fluoropolymer-Booted PRDI has a standard overall height of 1.75”. Custom height Fluoropolymer-Booted PRDI’s are available upon request.
  • A 2” Fluoropolymer-Booted PRDI has a standard overall height of 1.75”. Custom height Fluoropolymer-Booted PRDI’s are available upon request.
  • A 3” Fluoropolymer-Booted PRDI has a standard overall height of 1.93”. Custom height Fluoropolymer-Booted PRDI’s are available upon request.
  • A 4” Fluoropolymer-Booted PRDI has a standard overall height of 2.31”. Custom height Fluoropolymer-Booted PRDI’s are available upon request.
  • A 6” Fluoropolymer-Booted PRDI has a standard overall height of 2.81”. Custom height Fluoropolymer-Booted PRDI’s are available upon request.
  • An 8” Fluoropolymer-Booted PRDI has a standard overall height of 3.43”. Custom height Fluoropolymer-Booted PRDI’s are available upon request.