Parr Pressure Vessels are protected by custom built rupture discs furnished by Fike® Corporation, a specialist in this exotic art. Examination of these discs will indicate that each of these discs is domed. This dome was produced at the factory by taking the individual disc to 70% of its burst pressure.
The ASME as well as other pressure vessel codes dictate that pressure vessels must be equipped with a rupture disc designed to burst no higher than the design pressure of the vessel. For pressure loads that do not cycle rapidly such as our vessels, Fike suggests limiting the actual operating pressure to no more than 90% of its burst pressure. This combination will limit operating pressures to no more than 90% of the design pressure of the vessel.
We have selected Alloy 600 as the standard material for these rupture discs. It provides excellent corrosion resistance while retaining over 90% of its room temperature rating at temperatures up to 500 °C. For added corrosion resistance we can furnish these discs with gold facing or replace with discs made of Alloy C276. Discs can be produced to match any operating pressure and temperature above the stated minimums.
Parr reactors and pressure vessels from 25 mL to 2000 mL use the 526HC Series Alloy 600 disc or 581HC Series Alloy 600 with gold facing. The 1 gallon and larger use the 708HC Series discs. The 4580 Reactor Systems use the 1415HC Series discs.
In general, the 500 psi disc in the 526HC Series discs and the 600 psi in the 708HC Series are the lowest available ranges in the Alloy 600 material. Alternate disc materials are available but they do not offer the same corrosion resistant properties and temperature capabilities.
For applications where users prefer a lower range pressure gage, we would add a spring loaded relief valve set to protect the gage and a 1000 psi rupture disc as the fail safe protection.
Users are invited to contact the Parr Technical Support Staff with requirements for special rupture discs.
Parr Rupture Disc Specifications
Series 526HC Discs for 1/4” Orifice (For A888HC2 Assembly) |
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| Part Number | Burst Rating (psi) | Max. Operating Pressure (psi) | Temperature | Material | CE |
| 526HCP05CTYD† | 500 | 450 | 22 °C | Alloy 600 | Y |
| 526HCP06CTYD† | 600 | 540 | 22 °C | Alloy 600 | Y |
| 526HCPD | 1000 | 900 | 22 °C | Alloy 600 | Y |
| 526HCP10CH | 1000 | 900 | 22 °C | Alloy C276 | Y |
| 526HCP11CT | 1150 | 1035 | 22 °C | Alloy 600 | Y |
| 526HCP12CT | 1200 | 1080 | 22 °C | Alloy 600 | Y |
| 526HCP14CT | 1400 | 1260 | 22 °C | Alloy 600 | Y |
| 526HCP14CH | 1400 | 1260 | 22 °C | Alloy C276 | Y |
| 526HCP15CT | 1500 | 1350 | 22 °C | Alloy 600 | Y |
| 526HCP15CH | 1500 | 1350 | 22 °C | Alloy C276 | Y |
| 526HCP17CT | 1700 | 1530 | 22 °C | Alloy 600 | Y |
| 526HCP17CH | 1700 | 1530 | 22 °C | Alloy C276 | Y |
| 526HCP18CT | 1850 | 1665 | 22 °C | Alloy 600 | Y |
| 526HCP19CT | 1900 | 1710 | 22 °C | Alloy 600 | Y |
| 526HCP19CH | 1900 | 1710 | 22 °C | Alloy C276 | Y |
| 526HCPF | 2000 | 1800 | 22 °C | Alloy 600 | Y |
| 526HCP20CH | 2000 | 1800 | 22 °C | Alloy C276 | Y |
| 526HCP22CT | 2200 | 1980 | 22 °C | Alloy 600 | Y |
| 526HCP27CT | 2700 | 2430 | 22 °C | Alloy 600 | Y |
| 526HCP27CH | 2700 | 2430 | 22 °C | Alloy C276 | Y |
| 526HCP28CT | 2800 | 2520 | 22 °C | Alloy 600 | Y |
| 526HCP29CT | 2900 | 2610 | 22 °C | Alloy 600 | Y |
| 526HCP29CH | 2900 | 2610 | 22 °C | Alloy C276 | Y |
| 526HCPG | 3000 | 2700 | 22 °C | Alloy 600 | Y |
| 526HCP30CH | 3000 | 2700 | 22 °C | Alloy C276 | Y |
| 526HCP40CT | 4000 | 3600 | 22 °C | Alloy 600 | Y |
| 526HCP42CH | 4200 | 3780 | 22 °C | Alloy C276 | Y |
| 526HCP45CT | 4500 | 4050 | 22 °C | Alloy 600 | Y |
| 526HCP45CH | 4500 | 4050 | 22 °C | Alloy C276 | Y |
| 526HCPH | 5000 | 4500 | 22 °C | Alloy 600 | Y |
| 526HCP50CH | 5000 | 4500 | 22 °C | Alloy C276 | Y |
| 526HCP52CT | 5250 | 4725 | 22 °C | Alloy 600 | Y |
| 526HCP60CT | 6000 | 5400 | 22 °C | Alloy 600 | Y |
| 526HCP60CH | 6000 | 5400 | 22 °C | Alloy C276 | Y |
| 526HCPJ | 8000 | 7200 | 22 °C | Alloy 600 | Y |
| 526HCP80CH | 8000 | 7200 | 22 °C | Alloy C276 | Y |
| 526HCP85CT | 8500 | 7650 | 22 °C | Alloy 600 | Y |
| 526HCP85CH | 8500 | 7650 | 22 °C | Alloy C276 | Y |
| 526HCP100CT | 10,000 | 9000 | 22 °C | Alloy 600 | Y |
| 526HCPL | 12,000 | 10,800 | 22 °C | Alloy 600 | Y |
| 526HCP10CTYZ35 | 1000 | 900 | 350 ºC | Alloy 600 | Y |
| 526HCP10CTYZ50 | 1000 | 900 | 500 ºC | Alloy 600 | Y |
| 526HCP10CHYZ50 | 1000 | 900 | 500 ºC | Alloy C276 | Y |
| 526HCP10YD† | 1000 | 900 | 350 °C | Alloy 600 | Y |
| 526HCP19CTYZ35 | 1900 | 1710 | 350 ºC | Alloy 600 | Y |
| 526HCP19CTYZ50 | 1900 | 1710 | 500 ºC | Alloy 600 | Y |
| 526HCP20CTYZ35 | 2000 | 1800 | 350 ºC | Alloy 600 | Y |
| 526HCP20CTYZ50 | 2000 | 1800 | 500 ºC | Alloy 600 | Y |
| 526HCP20CHYZ50 | 2000 | 1800 | 500 ºC | Alloy C276 | Y |
| 526HCP29CHYZ30 | 2900 | 2610 | 300 ºC | Alloy C276 | Y |
| 526HCP29CTYZ35 | 2900 | 2610 | 350 ºC | Alloy 600 | Y |
| 526HCP29CTYZ35 | 2900 | 2610 | 350 ºC | Alloy 600 | Y |
| 526HCP29CHYZ35 | 2900 | 2610 | 350 ºC | Alloy C276 | Y |
| 526HCP29YD† | 2900 | 2610 | 350 °C | Alloy 600 | Y |
| 526HCP30CTYZ35 | 3000 | 2700 | 350 ºC | Alloy 600 | Y |
| 526HCP30CHYZ35 | 3000 | 2700 | 350 ºC | Alloy C276 | Y |
| 526HCP30CTYZ50 | 3000 | 2700 | 500 ºC | Alloy 600 | Y |
| 526HCP30CHYZ50 | 3000 | 2700 | 500 ºC | Alloy C276 | Y |
| 526HCP42CTYZ60 | 4200 | 3780 | 600 ºC | Alloy 600 | Y |
| 526HCP44CTYZ50 | 4400 | 3960 | 500 ºC | Alloy 600 | Y |
| 526HCP50CTYZ35 | 5000 | 4500 | 350 ºC | Alloy 600 | Y |
| 526HCP50CHYZ35 | 5000 | 4500 | 350 ºC | Alloy C276 | Y |
| 526HCP50CTYZ50 | 5000 | 4500 | 500 ºC | Alloy 600 | Y |
| 526HCP50CHYZ50 | 5000 | 4500 | 500 ºC | Alloy C276 | Y |
| 526HCP50YD† | 5000 | 4500 | 500 ºC | Alloy 600 | Y |
| 526HCP59CTYZ50 | 5900 | 5310 | 500 ºC | Alloy 600 | Y |
| 526HCP60CHYZ50 | 6000 | 5400 | 500 ºC | Alloy C276 | Y |
| 526HCP60YD† | 6000 | 5400 | 350 ºC | Alloy 600 | Y |
| 526HCP80CTYZ50 | 8000 | 7200 | 500 ºC | Alloy 600 | Y |
| 526HCP80CHYZ50 | 8000 | 7200 | 500 ºC | Alloy C276 | Y |
| 526HCP85CHZ50 | 8500 | 7650 | 500 ºC | Alloy C276 | Y |
| 526HCP94CHYZ35 | 9400 | 8460 | 350 ºC | Alloy C276 | Y |
| 526HCP10CR‡ | 1000 | 900 | 22 °C | Tantalum | Y |
| † Scored rupture disc, non-fragmenting. ‡ Maximum operating pressure will vary dramatically with increase in temperature. |
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Series 581HC Discs for 1/4” Orifice (For A888HC2 Assembly) |
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| Part Number | Burst Rating (psi) | Max. Operating Pressure (psi) | Temperature | Material | CE |
| 581HCP08CN | 800 | 720 | 22 °C | Gold Faced Alloy 200 | Y |
| 581HCPD | 1000 | 900 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCP12CT | 1200 | 1080 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCP14CT | 1400 | 1260 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCP16CT | 1600 | 1440 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCP18CT | 1800 | 1620 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCP19CT | 1900 | 1710 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCPF | 2000 | 1800 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCP22CT | 2200 | 1980 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCP27CT | 2700 | 2430 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCP29CT | 2900 | 2610 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCPG | 3000 | 2700 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCP40CT | 4000 | 3600 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCPH | 5000 | 4500 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCP52CT | 5250 | 4725 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCP60CT | 6000 | 5400 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCPJ | 8000 | 7200 | 22 °C | Gold Faced Alloy 600 | Y |
| 581HCP10CTYZ35 | 1000 | 900 | 350 ºC | Gold Faced Alloy 600 | Y |
| 581HCP20CTYZ35 | 2000 | 1800 | 350 ºC | Gold Faced Alloy 600 | Y |
| 581HCP50CTYZ50 | 5000 | 4500 | 500 ºC | Gold Faced Alloy 600 | Y |
Series 708HC Discs for 1/2” Orifice (For A707HC2 Assembly) |
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| Part Number | Burst Rating (psi) | Max. Operating Pressure (psi) | Temperature | Material | CE |
| 708HCP06CT | 600 | 540 | 22 °C | Alloy 600 | Y |
| 708HCP06CH | 600 | 540 | 22 °C | Alloy C276 | Y |
| 708HCP06CTYD† | 600 | 540 | 22 °C | Alloy 600 | Y |
| 708HCP08CH | 800 | 720 | 22 °C | Alloy C276 | Y |
| 708HCP10CT | 1000 | 900 | 22 °C | Alloy 600 | Y |
| 708HCP10CH | 1000 | 900 | 22 °C | Alloy C276 | Y |
| 708HCP15CT | 1500 | 1350 | 22 °C | Alloy 600 | Y |
| 708HCP16CT | 1600 | 1440 | 22 °C | Alloy 600 | Y |
| 708HCP19CT | 1900 | 1710 | 22 °C | Alloy 600 | Y |
| 708HCP19CH | 1900 | 1710 | 22 °C | Alloy C276 | Y |
| 708HCP20CT | 2000 | 1800 | 22 °C | Alloy 600 | Y |
| 708HCP20CH | 2000 | 1800 | 22 °C | Alloy C276 | Y |
| 708HCP22CT | 2200 | 1980 | 22 °C | Alloy 600 | Y |
| 708HCP29CT | 2900 | 2610 | 22 °C | Alloy 600 | Y |
| 708HCP29CH | 2900 | 2610 | 22 °C | Alloy C276 | Y |
| 708HCP30CT | 3000 | 2700 | 22 °C | Alloy 600 | Y |
| 708HCP05CTYZ50 | 500 | 450 | 500 °C | Alloy 600 | Y |
| 708HCP10CTYZ35 | 1000 | 900 | 350 °C | Alloy 600 | Y |
| 708HCP10CTYZ50 | 1000 | 900 | 500 ºC | Alloy 600 | Y |
| 708HCP19CTYZ35 | 1900 | 1710 | 350 °C | Alloy 600 | Y |
| 708HCP20CTYZ35 | 2000 | 1800 | 350 °C | Alloy 600 | Y |
| 708HCP30CTYZ35 | 3000 | 2700 | 350 °C | Alloy 600 | Y |
| 708HCP10CR‡ | 1000 | 900 | 22 °C | Tantalum | Y |
| 708HCP20CR‡ | 2000 | 1800 | 22 °C | Tantalum | Y |
| 708HCP29CR‡ | 2900 | 2610 | 22 °C | Tantalum | Y |
| † Scored rupture disc, non-fragmenting. ‡ Maximum operating pressure will vary dramatically with increase in temperature. |
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Series 1415HC Discs for 1/2” Orifice (For A1417HC Assembly) |
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| Part Number | Burst Rating (psi) | Max. Operating Pressure (psi) | Temperature | Material | CE |
| 1415HCP10CT | 1000 | 900 | 22 °C | Alloy 600 | Y |
| 1415HCP10CH | 1000 | 900 | 22 °C | Alloy C276 | Y |
| 1415HCP12CT | 1200 | 1080 | 22 °C | Alloy 600 | Y |
| 1415HCP19CT | 1900 | 1710 | 22 °C | Alloy 600 | Y |
| 1415HCP19CH | 1900 | 1710 | 22 °C | Alloy C276 | Y |
| 1415HCP20CT | 2000 | 1800 | 22 °C | Alloy 600 | Y |
| 1415HCP20CH | 2000 | 1800 | 22 °C | Alloy C276 | Y |
| 1415HCP29CT | 2900 | 2610 | 22 °C | Alloy 600 | Y |
| 1415HCP30CT | 3000 | 2700 | 22 °C | Alloy 600 | Y |
| 1415HCP30CH | 3000 | 2700 | 22 °C | Alloy C276 | Y |
| 1415HCP45CT | 4500 | 4050 | 22 °C | Alloy 600 | Y |
| 1415HCP50CT | 5000 | 4500 | 22 °C | Alloy 600 | Y |
| 1415HCP10CTYZ50 | 1000 | 900 | 500 ºC | Alloy 600 | Y |
| 1415HCP20CTYZ50 | 2000 | 1800 | 500 ºC | Alloy 600 | Y |
| 1415HCP20CHYZ50 | 2000 | 1800 | 500 ºC | Alloy C276 | Y |
| 1415HCP29CHYZ50 | 2900 | 2610 | 500 ºC | Alloy C276 | Y |
| 1415HCP30CTYZ50 | 3000 | 2700 | 500 ºC | Alloy 600 | Y |
| 1415HCP30CHYZ50 | 3000 | 2700 | 500 ºC | Alloy C276 | Y |
| 1415HCP40CTYZ40 | 4000 | 3600 | 400 ºC | Alloy 600 | Y |
Series 3744HC Discs for 1/2” Orifice (For A1607HC Assembly) |
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| Part Number | Burst Rating (psi) | Max. Operating Pressure (psi) | Temperature | Material | CE |
| 3744HCP08CT | 800 | 720 | 22 °C | Gold Faced Alloy 600 | Y |
| 3744HCP10CT | 1000 | 900 | 22 °C | Gold Faced Alloy 600 | Y |
| 3744HCP14CT | 1400 | 1260 | 22 °C | Gold Faced Alloy 600 | Y |
| 3744HCP15CT | 1500 | 1350 | 22 °C | Gold Faced Alloy 600 | Y |
Rupture Disc Replacement Video
Learn how to replace a rupture disc on a Parr reactor with this video supplement.
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