OsecoElfab’s PCR Rupture Disc

OsecoElfab manufactures the PCR rupture disk, which is a high-performance, reverse acting rupture disc designed and manufactured for extremely demanding rupture disc applications.  OsecoElfab’s PCR is a cross-scored, reverse buckling rupture disc. Cross-scoring allows the disc to achieve higher burst pressures without fragmentating.  Reversal occurs when the disc reaches the rated burst pressure and it opens along the score lines. This process yields a high-performance disc able to withstand high operating pressures within the most difficult applications. The PCR is excellent for relief valve isolation (gas and vapor service) and excels in extreme cycling or high vacuum/back pressure applications. The PCR is commonly used in SF6 switchgear units.

  • The PCR is available in line sizes ranging from 1 inch diameter all the way up to 12 inches diameter.
  • The PCR is available in burst pressures ranging from 30 psig all the way up to 1250 psig.
  • The PCR is available in burst temperatures ranging from cryogenic temperatures all the way up to 1000 degrees F.
  • The PCR 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 PCR works well in gas or vapor services only.
  • The Kr value for the PCR is Krg = 2.17.
  • The PCR has a 90% operating ratio, meaning the PCR operates reliably and with a long service life at pressures up to 90% of the marked burst pressure.  Pressure excursions above this 90% operating ratio will shorten the lifespan of the PCR.
  • The PCR is only offered with a 0% Manufacturing Design Range (MDR), meaning there will never be any variation between what burst pressure you order, and what burst pressure is marked on the tag of the rupture disk.
  • The PCR maintains or exceeds the ASME-specified burst tolerances of +/- 5% of marked burst pressure for burst pressures above 40 psig, or +/- 2 psig for burst pressures at or below 40 psig.
  • The PCR is a scored metal rupture disk, with a non-fragmenting design, meaning the PCR can be installed upstream from a pressure relief valve.
  • The PCR does not use a vacuum support.  The PCR is designed to handle vacuum services without any additional design enhancements.
  • The PCR is a reverse acting metal rupture disk.  Process pressure is applied to the convex side of the rupture disk.  Increasing process pressure collapses the dome of the rupture disk until the dome inverts, and the metal yields and tears open along the scored lines.
  • The PCR, like all reverse acting metal rupture disks, does best in static pressure applications, but also handles pressure cyclic services extraordinarily well. The PCR has been tested in excess of 1,000,000 full scale pressure cycles (0 psig to 90% of marked burst pressure and back down to 0 psig again), with no evidence of fatigue induced failure or alteration of burst pressure.
  • The PCR is offered with a PFA liner or shield on the inlet side of the rupture disk, to enhance corrosion protection.  This configuration is called the PCR-L
  • The PCR is designed, manufactured, and certified to ASME BPVC Section XIII requirements.
  • The PCR is designed to pair with the PRDI insert holder, as well as the PRDI-P pretorqued insert holder, as well as the Safety Cartridge one-piece holder assembly.
  • The MNFA for a 1.0″ PCR is 0.6 square inches
  • The MNFA for a 1.5″ PCR is 1.3 square inches
  • The MNFA for a 2.0″ PCR is 2.5 square inches
  • The MNFA for a 3.0″ PCR is 4.8 square inches
  • The MNFA for a 4.0″ PCR is 8.0 square inches
  • The MNFA for a 6.0″ PCR is 18.0 square inches
  • The MNFA for a 8.0″ PCR is 32.0 square inches
  • The MNFA for a 10.0″ PCR is 51.25 square inches
  • The MNFA for a 12.0″ PCR is 73.4 square inches
  • For a 1” PCR, the combined burst pressure range for all the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) runs from 100 psig up to a maximum burst pressure of 1250 psig. Each of the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) has its own, more limited range within those bounds.
  • For a 1″ PCR made from 316 Stainless Steel, the minimum burst pressure possible is 200 psig, and the maximum burst pressure is 1250 psig.
  • For a 1″ PCR made from Nickel 200, the minimum burst pressure possible is 100 psig, and the maximum burst pressure is 1250 psig.
  • For a 1″ PCR made from Inconel 600, the minimum burst pressure possible is 140 psig, and the maximum burst pressure is 1250 psig.
  • For a 1″ PCR made from Monel 400, the minimum burst pressure possible is 150 psig, and the maximum burst pressure is 1250 psig.
  • For a 1″ PCR made from Hastelloy C 276, the factory must be contacted to discuss available burst pressures.
  • For a 1.5” PCR, the combined burst pressure range for all the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) runs from 85 psig up to a maximum burst pressure of 1000 psig. Each of the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) has its own, more limited range within those bounds.
  • For a 1.5″ PCR made from 316 Stainless Steel, the minimum burst pressure possible is 185 psig, and the maximum burst pressure is 1000 psig.
  • For a 1.5″ PCR made from Nickel 200, the minimum burst pressure possible is 85 psig, and the maximum burst pressure is 1000 psig.
  • For a 1.5″ PCR made from Inconel 600, the minimum burst pressure possible is 95 psig, and the maximum burst pressure is 1000 psig.
  • For a 1.5″ PCR made from Monel 400, the minimum burst pressure possible is 90 psig, and the maximum burst pressure is 1000 psig.
  • For a 1.5″ PCR made from Hastelloy C 276, the factory must be contacted to discuss available burst pressures.
  • For a 2” PCR, the combined burst pressure range for all the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) runs from 65 psig up to a maximum burst pressure of 1000 psig. Each of the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) has its own, more limited range within those bounds.
  • For a 2″ PCR made from 316 Stainless Steel, the minimum burst pressure possible is 170 psig, and the maximum burst pressure is 1000 psig.
  • For a 2″ PCR made from Nickel 200, the minimum burst pressure possible is 65 psig, and the maximum burst pressure is 1000 psig.
  • For a 2″ PCR made from Inconel 600, the minimum burst pressure possible is 80 psig, and the maximum burst pressure is 1000 psig.
  • For a 2″ PCR made from Monel 400, the minimum burst pressure possible is 75 psig, and the maximum burst pressure is 1000 psig.
  • For a 2″ PCR made from Hastelloy C 276, the factory must be contacted to discuss available burst pressures.
  • For a 3” PCR, the combined burst pressure range for all the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) runs from 55 psig up to a maximum burst pressure of 1000 psig. Each of the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) has its own, more limited range within those bounds.
  • For a 3″ PCR made from 316 Stainless Steel, the minimum burst pressure possible is 155 psig, and the maximum burst pressure is 1000 psig.
  • For a 3″ PCR made from Nickel 200, the minimum burst pressure possible is 55 psig, and the maximum burst pressure is 1000 psig.
  • For a 3″ PCR made from Inconel 600, the minimum burst pressure possible is 70 psig, and the maximum burst pressure is 1000 psig.
  • For a 3″ PCR made from Monel 400, the minimum burst pressure possible is 65 psig, and the maximum burst pressure is 1000 psig.
  • For a 3″ PCR made from Hastelloy C 276, the factory must be contacted to discuss available burst pressures.
  • For a 4” PCR, the combined burst pressure range for all the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) runs from 45 psig up to a maximum burst pressure of 800 psig. Each of the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) has its own, more limited range within those bounds.
  • For a 4″ PCR made from 316 Stainless Steel, the minimum burst pressure possible is 135 psig, and the maximum burst pressure is 800 psig.
  • For a 4″ PCR made from Nickel 200, the minimum burst pressure possible is 45 psig, and the maximum burst pressure is 800 psig.
  • For a 4″ PCR made from Inconel 600, the minimum burst pressure possible is 60 psig, and the maximum burst pressure is 800 psig.
  • For a 4″ PCR made from Monel 400, the minimum burst pressure possible is 55 psig, and the maximum burst pressure is 800 psig.
  • For a 4″ PCR made from Hastelloy C 276, the factory must be contacted to discuss available burst pressures.
  • For a 6” PCR, the combined burst pressure range for all the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) runs from 35 psig up to a maximum burst pressure of 800 psig. Each of the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) has its own, more limited range within those bounds.
  • For a 6″ PCR made from 316 Stainless Steel, the minimum burst pressure possible is 95 psig, and the maximum burst pressure is 800 psig.
  • For a 6″ PCR made from Nickel 200, the minimum burst pressure possible is 35 psig, and the maximum burst pressure is 800 psig.
  • For a 6″ PCR made from Inconel 600, the minimum burst pressure possible is 50 psig, and the maximum burst pressure is 800 psig.
  • For a 6″ PCR made from Monel 400, the minimum burst pressure possible is 45 psig, and the maximum burst pressure is 800 psig.
  • For a 6″ PCR made from Hastelloy C 276, the factory must be contacted to discuss available burst pressures.
  • For an 8” PCR, the combined burst pressure range for all the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) runs from 35 psig up to a maximum burst pressure of 700 psig. Each of the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) has its own, more limited range within those bounds.
  • For an 8″ PCR made from 316 Stainless Steel, the factory must be contacted to discuss available burst pressures.
  • For an 8″ PCR made from Nickel 200, the minimum burst pressure possible is 35 psig, and the maximum burst pressure is 700 psig.
  • For an 8″ PCR made from Inconel 600, the minimum burst pressure possible is 45 psig, and the maximum burst pressure is 700 psig.
  • For an 8″ PCR made from Monel 400, the minimum burst pressure possible is 40 psig, and the maximum burst pressure is 700 psig.
  • For an 8″ PCR made from Hastelloy C 276, the factory must be contacted to discuss available burst pressures.
  • For a 10” PCR, the combined burst pressure range for all the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) runs from 35 psig up to a maximum burst pressure of 180 psig. Each of the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) has its own, more limited range within those bounds.
  • For a 10″ PCR made from 316 Stainless Steel, the factory must be contacted to discuss available burst pressures.
  • For a 10″ PCR made from Nickel 200, the minimum burst pressure possible is 35 psig, and the maximum burst pressure is 180 psig.
  • For a 10″ PCR made from Inconel 600, the minimum burst pressure possible is 45 psig, and the maximum burst pressure is 180 psig.
  • For a 10″ PCR made from Monel 400, the factory must be contacted to discuss available burst pressures.
  • For a 10″ PCR made from Hastelloy C 276, the factory must be contacted to discuss available burst pressures.
  • For a 12” PCR, the combined burst pressure range for all the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) runs from 30 psig up to a maximum burst pressure of 120 psig. Each of the standard OE materials (316 Stainless Steel, Nickel 200, Inconel 600, Monel 400, and Hastelloy C 276) has its own, more limited range within those bounds.
  • For a 12″ PCR made from 316 Stainless Steel, the factory must be contacted to discuss available burst pressures.
  • For a 12″ PCR made from Nickel 200, the minimum burst pressure possible is 30 psig, and the maximum burst pressure is 120 psig.
  • For a 12″ PCR made from Inconel 600, the minimum burst pressure possible is 40 psig, and the maximum burst pressure is 120 psig.
  • For a 12″ PCR made from Monel 400, the factory must be contacted to discuss available burst pressures.
  • For a 12″ PCR made from Hastelloy C 276, the factory must be contacted to discuss available burst pressures.