Bursting & Rupture discs
New generation of Rupture discs
Rupture discs are manufactured with Gi laser technology. All discs can be equipped with pressure transmitter. When overpressure is detected, a disc rapidly opens and an excess of media is released. Discs fulfill safety standards and requirements established for pharmaceutical, food, cosmetic industry and can be applied anywhere hygienic conditions are essential. VALWO is a FIKE’s rupture discs authorized representative. All types of discs, inserts and accessories are offered, which are certified.
Simply put, a rupture disc is a safety device to protect against pressure build-up in all types of
installations working with liquids or gases. In the explosion-proof industry, you can also find
terms such as a safety diaphragm, a tear plate, a safety head or a pressure insert. It is a
disposable device, that is, when the plate is broken, it must be replaced with a new one.
The plate consists of two elements - the data plate and the main part. It is the main part of
the plate that is laser cut at certain points to allow full opening when the pressure increases
undesirable. Each plate is selected individually based on specific process parameters. The board
setting can be read from the nameplate, on which you can also find information on how it should be mounted.
Rupture discs can come in several configurations. It all depends on the type of installation and the
expectations of entrepreneurs. The first option is to use the board as a standalone device as an alternative
to the safety valve. The second solution is to install disc under the safety valve. This method of
installation is usually used with aggressive and corrosive media to protect the valve itself. This
arrangement allows the use of the valves themselves in a slightly cheaper material.
Another option is to place a disc behind the safety valve as an additional safety feature. An increasingly
common solution is to use two rupture discs simultaneously. Thanks to this, after an increase in pressure,
the user has the possibility to switch the system to an unbroken plate and replace the broken disc without
interrupting the technological process.
Rupture discs are used in many industries, incl. chemical, industrial, petrochemical, military, armaments,
gas, energy, food and many others.
A frequent doubt against the use of rupture discs is the need to replace them after they have tripped.
However, if we take into account the number of benefits of their use, this argument very quickly becomes obsolete.
Above all, rupture discs are the best alternative to safety valves. They are much cheaper both to buy
and operate. It is especially visible in the case of aggressive media, where it is necessary to use
pressure protection in non-standard material execution. Moreover, discs can be used at low and high
pressures, which are well beyond the scope of the safety valves. They are also available in a wide
range of sizes, from DN25 to DN 900. It is worth noting that safety valves usually do not exceed
DN 300. Also a very large selection of materials from which the discs can be made, places them
high on the list of effective explosion protection. As an additional argument, immediate, full
opening or perfect tightness of the system can also be mentioned.
In summary, due to the wide application in many industries and relatively low cost, rupture discs
are an ideal solution when it is necessary to protect all installations against uncontrolled pressure increase.
AXIUS bursting disc
AXIUS type is designed to be used in aggressive chemical and pharmaceutical applications and can operate with both liquids and gases. Thanks to smooth surface any process media do not retain.
| Performance Attributes | Process Media | Bolted Type Rupture Disc Holders | |||||
| Operating Ratio | Non-Fragmenting | Vacuum Resistant | Pulsating/Cyclic | Liquid | Vapor/Gas | Insert Type (GI) | Pre-Torque Type (TQ/TQ+) |
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| 100% CE 95% ASME |
YES | YES | YES | YES | YES | YES | XL/XLO |
| SPECYFICATION | |
| Design: | Smooth, Reverse-Acting, Lowest Burst Pressures |
| Size Range: | 0.75 in to 12 in || DN20 to DN300 |
| Burst Pressure Range: | 7 psig to 600 psig || 0.48 barg to 41.37 barg |
| Burst Pressure Tolerance: | ± 1 psig for burst pressure < 15 psig ± 2 psig for burst pressure > 15 psig and < 40 psig ± 5% for burst pressure > 40 psig |
| Burst Pressure Tolerance: | ± 0.07 barg for burst pressure < 1.03 barg ± 0.14 barg for burst pressure > 1.03 barg and < 2.76 barg ± 5% for burst pressure > 2.76 barg |
| Materials: | 316/316L SST, Hastelloy®C276 and Inconel®625 |
ATLAS bursting disc
ATLAS type rupture disc is dedicated to contact with both liquids and vapors. High (95%) operating ratio and pressure capability (up to 1375 PSIG (94.80 BARG)) features it.
| Performance Attributes | Process Media | Bolted Type Rupture Disc Holders | |||||
| Operating Ratio | Non-Fragmenting | Vacuum Resistant | Pulsating/Cyclic | Liquid | Vapor/Gas | Insert Type (GI) | Pre-Torque Type (TQ/TQ+) |
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| 100% CE, KOSHA 95% ASME | YES | YES | YES | YES* | YES | ATLAS/ATLAS-LO | |
*Sizes 14 in (DN350) and up are suitable for use in liquid systems only with listed volume of compressible vapor against the disc at the time of opening. See table below for the minimum vapor volume requirement.
| SPECYFICATION | |
| Design: | Smooth, Reverse-Acting, Higher Pressure |
| Size Range: | 1 in to 42 in || DN25 to DN1050 |
| Burst Pressure Range: | 3.25 psig to 1500 psig || 0.22 barg to 103.42 barg |
| Burst Pressure Tolerance: | ± 1 psig for burst pressure < 20 psig ± 5% for burst pressure > 20 psig |
| Burst Pressure Tolerance: | ± 0.07 barg for burst pressure < 1.38 barg ± 5% for burst pressure > 1.38 barg |
| Materials: | 316/316L SST, Hastelloy®C276 and Inconel®625 |
SRL bursting disc
SRL is a type of bursting disc is reverse-bulged. Due to disc’s circumference weakening and convex shape a full opening is enabled. This type of discs is applied in medium of high corrosivity, as they can be performed of 316 SST, Hastelloy®, tantalum as so one. Also pressure relief valves PRV can be protected with them.
| Performance Attributes | Process Media | Rupture Disc Holders | ||||
| Operating Ratio | Non-Fragmenting | Vacuum Resistant | Liquid | Vapor/Gas | Bolted Type | Pre-Torque |
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| 90% | YES | YES* | YES | YES | YES | YES |
** Consult factory if full vacuum is required and specified burst pressure is below 15 PSIG (1.03 BARG).
| SPECYFICATION | |
| Design: | Scored, Reverse-acting, Low Burst Pressure |
| Size Range: | 1 in to 8 in || DN25 to DN200 |
| Burst Pressure Range: | 10 psig to 275 psig || 0.69 barg to 18.97 barg |
| Burst Pressure Tolerance: | ± 2 psig for burst pressures ≤ 40 psig ± 2 psig for burst pressure > 15 psig and < 40 psig ± 5% for burst pressure > 40 psig |
| Burst Pressure Tolerance: | ± 0.15 barg for burst pressure ≤ 1.50 barg stand. ± 10% / red. ± 0.15 barg for burst pressure > 1.50 barg and < 2.76 barg stand. ± 10% / red. ± 5% for burst pressures ≥ 2.76 barg |
| Materials: | 316/316L SST, Nickel 200/201, Monel® 400, Inconel® 600, Hastelloy® C276 and Tantalum |
SRX bursting disc
SRX bursting disc do not undergo division and is advised for vapor installation. SRX guarantees high durability in cyclic and pulse work conditions.
| Performance Attributes | Process Media | Rupture Disc Holders | |||||
| Operating Ratio | Non-Fragmenting | Vacuum Resistant | Pulsating/Cyclic | Liquid | Vapor/Gas | Bolted Type | Pre-Torque |
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| 90% | YES | YES | YES | NO* | YES | YES | YES |
*Minimum vapor volume required.
| SPECYFICATION | |
| Design: | Scored, Reverse-acting, Low Burst Pressure |
| Size Range: | 1 in to 24 in || DN25 to DN600 |
| Burst Pressure Range: | 27 psig to 820 psig || 1.86 barg to 56.54 barg |
| Burst Pressure Tolerance: | ± 2 psig for burst pressures ≤ 40 psig ± 5% for burst pressures > 40 psig |
| Burst Pressure Tolerance: | stand. ± 10% / red. ± 0.15 barg for burst pressures > 1.50 barg and < 2.76 barg stand. ± 10% / red. ± 5% for burst pressures ≥ 2.76 barg |
| Materials: | 316/316L SST, Nickel 200/201, Monel® 400, Inconel® 600 and Hastelloy® C276 |
SR-H (HYGIENIC) bursting disc
SR-H bursting disc doesn’t fragment for both gases and liquids. Disc is widely applied in pharmaceutical, food, biotechnology industry and many others, which requires hygienic conditions. Special performance enables CIP/SIP procedures to be applied and is equipped with FDA admitted seals
| Performance Attributes | Process Media | Rupture Disc Holders | ||||
| Operating Ratio | Non-Fragmenting | Vacuum Resistant | Sanitary | Liquid | Vapor/Gas | Ferrules |
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| 90% | YES | YES* | YES | YES | YES | YES |
*For Burst Pressures less than 15 PSIG (1.03 BARG) consult factory.
| SPECYFICATION | |
| Design: | Scored Hygienic , Reverse-acting, Low Burst Pressure |
| Size Range: | 1.5 in to 4 in || DN38, DN40, DN50 and DN76 |
| Burst Pressure Range: | 12 psig to 140 psig || 0.83 barg to 9.65 barg |
| Burst Pressure Tolerance: | ± 0.15 barg for burst pressure ≤ 1.5 barg stand. ±10% / red. ± 0.15 barg for burst pressure > 1.5 barg and < 2.76 barg stand. ± 10% / red. ± 5% for burst pressure ≥ 2.76 barg |
| Materials: | 316/316L SST |
POLY-SD bursting disc
POLY-SD bursting discs type advantage is a high durability. Disc can be used with fluids and is irreplaceable anywhere polymerization occurs. POLY-SD is described with high work parametres.
| Performance Attributes | Process Media | Rupture Disc Holders | |||||
| Operating Ratio | Non-Fragmenting | Vacuum Resistant | Polymerization | Liquid | Vapor/Gas | Bolted Type | Pre-Torque |
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| 90% | YES | YES | YES | YES | YES | YES | YES |
| SPECYFICATION | |
| Design: | Scored, Forward-acting |
| Size Range: | 0.5 in to 24 in || DN15 to DN600 |
| Burst Pressure Range: | 20 to 3000 psig || 1.38 to 206.84 barg |
| Burst Pressure Tolerance: | ± 2 psig for burst pressures ≤ 40 psig ± 5% for burst pressures > 40 psig |
| Burst Pressure Tolerance: | ± 0.15 barg for burst pressure < 1.5 barg stand. ± 10% / red. ± 0.15 barg for burst pressures > 1.5 barg en < 2.76 barg stand. ± 10% / red. ± 5% for burst pressures > 2.76 barg |
| Materials: | Aluminum 1100, 316/316L SST, Nickel 200/201, Monel® 400, Inconel® 600, Silver |
SCRD bursting disc
SCRD set has been designed for high pressure applications with both gases and liquids. SCRD discs are ideal as PRV protection
| Performance Attributes | Process Media | Rupture Disc Holders | |||
| Operating Ratio | Non-Fragmenting | Vacuum Resistant | Liquid | Vapor/Gas | Bolted Type |
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| 90% | YES | YES | YES | YES | YES |
| SPECYFICATION | |
| Design: | Scored, Forward-acting, High Pressure |
| Size Range: | 1 in to 24 in || DN15 to DN600 |
| Burst Pressure Range: | 100 psig to 6000 psig || 2.4 barg to 413.7 barg |
| Burst Pressure Tolerance: | ± 5% of marked burst pressure |
| Materials: | 316/316L SST, Inconel® 600, Monel® 400, Nickel 200/201 and Hastelloy® C276 |
HO / HOV bursting disc
HO/HOV type bursting discs comprise of 2 to 4 components, which states a one piece. A primary unit is a Teflon membrane and slotted top. Together they ensures a stable and accurate performance. Due to its modularity HO/HOV type of disc is available in multiple materials and is widely applied in industry.
| Performance Attributes | Process Media | Rupture Disc Holders | ||||
| Operating Ratio | Vacuum Resistant | Pulsating/Cyclic | Liquid | Vapor/Gas | Bolted type | Union Type |
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| 80% | YES | YES | YES | YES | YES | YES |
| SPECYFICATION | |
| Design: | Composite, Forward-acting |
| Size Range: | 1 in to 44 in || DN25 to DN1100 |
| Burst Pressure Range: | 1.5 psig to 6000 psig || 0.10 barg to 413.69 barg |
| Burst Pressure Tolerance: | ± 1 psig for burst pressures < 5 psig ± 1.5 psig for burst pressures > 5 psig and < 14.99 psig ± 2 psig for burst pressures > 15 psig and < 40 psig ± 5% for burst pressures > 40 psig |
| Burst Pressure Tolerance: | ± 0.14 barg for burst pressures ≤ 1.5 barg stand. ± 10% / red. ± 0.14 barg for burst pressures > 1.5 barg and < 2.76 barg stand. ± 10% / red. ± 5% for burst pressures ≥ 2.76 barg |
| Materials: | Aluminum, 316/316L SST, Nickel 200/201, Monel® 400, Inconel® 600, Silver and Fluor |
P SERIES bursting disc
P type bursting disc is dedicated for operating with fluids. P series discs are the best solution to work in corrosive medium.
| Performance Attributes | Process Media | Rupture Disc Holders | |||||
| Operating Ratio | Vacuum Resistant | Pulsating/Cyclic | Liquid | Vapor/Gas | Bolted type | Screw Type | Union Type |
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| 70% | YES | YES | YES | YES | YES | YES | YES |
| SPECYFICATION | |
| Design: | Prebulged, Forward-Acting |
| Size Range: | 0.5 in to 44 in || DN15 to DN1100 |
| Burst Pressure Range: | 1.5 psig to 11,000 psig || 0.10 barg to 758.42 barg |
| Burst Pressure Tolerance: | ± 1 psig for burst pressures < 5 psig ± 1.5 psig for burst pressures > 5 psig and < 14.99 psig ± 2 psig for burst pressures > 15 psig and < 40 psig ± 5% for burst pressures > 40 psig |
| Burst Pressure Tolerance: | ± 0.15 barg for burst pressures ≤ 1.5 barg stand. ± 10% / red. ± 0.15 barg for burst pressures > 1.5 barg and < 2.76 barg stand. ± 10% / red. ± 5% for burst pressures ≥ 2.76 barg |
| Materials: | Aluminum, 316 SST, Nickel 200, Monel® 400, Inconel® 600 and Silver |
AD bursting disc
Bursting discs of AD series are suitable for both liquids and gases. Is designed for vacuum protection of atmospheric vessels. Disc is available in hygienic edition.
| Performance Attributes | Process Media | Rupture Disc Holders | ||
| Operating Ratio | Vacuum Resistant | Liquid | Vapor/Gas | Companion Flanges |
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| 50% | YES* | YES | YES | YES |
*Varies by model.
| SPECYFICATION | |
| Design: | Flat Composite, Forward-acting |
| Size Range: | 1.5 in to 24 in || DN40 to DN600 |
| Burst Pressure Range: | 1 psig to 15 psig || 35 mbarg to 1035 mbarg |
| Burst Pressure Tolerance: | ± 1 psig on discs 2 through 14 in ± 0.5 psig on discs 16 in and larger ± 1 psig when nominal requested pressure exceeds 4 psig |
| Burst Pressure Tolerance: | ± 25 mbarg for burst pressures ≤ 250 mbarg ± 50 mbarg for burst pressures > 250 mbarg and ≤ 500 mbarg ± 10% for burst pressures > 700 mbarg |
GD SERIES bursting disc
GD series graphite discs guarantee adequate protection in aggressive medium. It is employed for fluids and it do not involve handlings, due to opportunity of mouting between flanges directly. No holders are required.
| Performance Attributes | Process Media | ||
| Operating Ratio* | Vacuum Resistant | Liquid | Vapor/Gas |
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| 90% | YES | YES | YES |
*Operating ratio varies based on burst pressure and heavy cyclic duty.
| SPECYFICATION | |
| Design: | Graphite |
| Size Range: | 0.50 in to 24 in || DN15 to DN600 |
| Burst Pressure Range: | 0.25 psig to 1000 psig || 0.02 barg to 69 barg |
| Burst Pressure Tolerance: | ± 0.75 psig for burst pressures < 5 psig ± 1 psig for burst pressures > 5 psig and < 15 psig ± 2 psig for burst pressures > 15 psig and < 40 psig ± 5% for burst pressures > 40 psig |
| Burst Pressure Tolerance: | ± 0.05 barg for burst pressures < 0.34 barg ± 0.07 barg for burst pressures > 0.34 barg and < 1.03 barg ± 0.14 barg for burst pressures > 1.03 barg and < 2.76 barg ± 5% for burst pressures > 2.76 barg |
ERD bursting disc
Extruder bursting discs ERD series are known as Blow-Out-Plug as well, are the devices that protect against overpressure in installation of polymerization installation. ERD is available in conventional performance or is individually designed with adjustable dimension, threading and construction, according do Clients’s requirement.
| Performance Attributes | Process Media | |||
| Operating Ratio | Pulsating/Cyclic | Polymerization | Liquid | Vapor/Gas |
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| 90% | YES | YES | YES | YES |
| SPECYFICATION | |
| Design: | Extruder, Forward Acting |
| Size Range: | 3/16 in to 5 in || DN4.5 to DN150 |
| Burst Pressure Range: | 1,500 psig to 50,000 psig || 80 barg to 1000 barg |
| Burst Pressure Tolerance: | Standard: ± 10% Reduced: ± 5% |
SHX (HYGIENIC) bursting disc
SHX bursting discs are intended for both liquids and gases, especially at pharmaceutical, food and bottling industry. Can be applied for higher bursting pressure.
| Performance Attributes | Process Media | Rupture Disc Holders | ||||
| Operating Ratio | Non-Fragmenting | Vacuum Resistant | Sanitary | Liquid | Vapor/Gas | Ferrules |
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| 90% | YES | YES | YES | YES | YES | YES |
| SPECYFICATION | |
| Design: | Hygienic, Forward-acting, Scored |
| Size Range: | 1.5 in to 2 in || DN40 t0 DN50 |
| Burst Pressure Range: | 300 psig to 1500 psig || 20.68 barg to 103.42 barg |
| Burst Pressure Tolerance: | Standard: ± 10% Reduced: ± 5% |
| Materials: | 316/316L SST |
LO-V (HYGIENIC) bursting disc
Lo-V type bursting disc is a unit which neutralizes side effects of both explosion and implosion (no matter which side of medium flow is taking under consideration).
| Performance Attributes | Process Media | Rupture Disc Holders | |||||
| Operating Ratio | Non-Fragmenting | Pulsating/Cyclic | Sanitary | Liquid | Vapor/Gas | Screw Type | Bolted Type |
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| 85% | YES | YES | YES | YES | YES | YES | YES |
Handlings for bursting discs
A handling is a device which provides tightness of rupture disc. When assembled, the crown (bulged portion) of the disc protrudes into the hold-down flange and a metal to metal seal is provided.
