THE ORIGINAL RUPTURE DISK MANUFACTURER

Available at Alpha Process Sales - All Locations & Murray Engineering - Northern Texas

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Introduction to Rupture Disk Technology
Rupture Disks Combined with Safety Relief Valves
Customized Rupture Disk Solutions
Rupture Disk Quick Reference Guide
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BS&B'S FEATURED PRODUCT

Many designs and types of fittings are used as holders for rupture disks (bursting discs) and are fabricated from metal(s) compatible with the process media and atmospheric environment. Each BS&B safety head is designed for optimum safety and performance.

Reduced Inventory Costs. One head fits most standard international flanges eliminating the need to stock unnecessary and costly inventory.
Simple, Fail-Safe Installation. The asymmetric locating pins and standard welded J-Bolt ensure correct orientation by eliminating possible human error.
Leak-Tight Bite-Type Seal. BS&B is the only disk manufacturer who machines a Bite-Type seal into the inlet flange of the Safety Head that engages the disk material proper creating a bubble-tight seal.
Easy Cleaning and Inspection. Maintenance can be done without replacing the disk due to the pretorqued cap screws, which maintain the clamping load on the disk.

For conventional pre-bulged rupture disks (bursting discs) we offer Bolted Type Safety Heads. Where space is limited and where quick or frequent change-out of rupture disk may be necessary, the Union Type Safety Head is available.

With a unique curved design, the LO-TO-FLO™ Safety Head limits process buildup to ensure superior over-pressure protection for high viscosity liquids.

Whether your process requires a Sanitary / Aseptic Fitting or a QUICKSERT™ flat-faced flange assembly holder, BS&B offers the right safety head for your application.

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REVERSE RUPTURE DISKS

The Low Pressure LPS™ Reverse Buckling Disk and SRB-7RS Safety Head

The LPS Rupture Disk (Bursting Disc) was developed to provide low burst pressures from 5 psig (0.35 barg) using reverse buckling rupture disk technology. The LPS Rupture Disk (Bursting Disc), combined with the SRB-7RS® Safety Head, provides accuracy and reliability. The LPS uses SAF™ technology (Structural Apex Forming™) enabling very low burst pressures to be achieved with excellent opening characteristics.

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SKr™ Rupture Disk

One disk for gas, liquid, vapor & 2 phase service | 95% operating ratio | certified for “UD stamp” or “CE mark” | designed for non fragmentation | high flow characteristics; certified relief area & Kr values | unique damage resistant design – saf™ technology | fail safe – damage safety ratio < 1 | paired with the industry leading SRB-7RS safety head 

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SIGMA™ & SIGMA EXL™

Reverse Buckling Disk in Sizes 1"-8" (25-200 mm) | High Operating Ratio: 95% of marked burst pressure | High Operating Ratio: 100% of minimum burst pressure (CEN ISO4126-2) | Standard 0% Manufacturing Design Range, optional -5% | Designed for non-fragmentation | Designed for Gas, Liquid, or two-phase flow conditions | Fail Safe: Damage- Safety Ratio <1 | Saf™ technology | Vacuum resistant | Smooth process side of disk resists product accumulation | Long service life in pressure cycling or pulsating conditions | US Patent No.5167337 and worldwide patents pending | For installation in BS&B type SRB-7RS™ Pretorqued Safety Head

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BIO-SAF™ System

One disk design for gas and liquid service | "Fail-safe" design damage safety ratio < 1.0 | Wide range of pressures | Ideal for CIP / SIP service | Installed with integral sanitary gaskets | 8 to 16 micro-inch typical disk surface finish | Suitable for operating pressures up to 90% of marked burst pressure* or 95% of the specified minimum burst pressure (CEN Standard) | Meets ASME BPE standards | Designed for non-fragmentation | 0% standard Manufacturing Design Range - optional -5%, -10% | Withstands full vacuum at all burst pressures | Available SAS™ (Sanitary Alert Sensor) or LDS (Leak Detector Sensor) with leak sensing capability | Integral burst disk sensor option

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The STA-SAF System

90% or greater operating ratio | Vacuum resistant | Solid metal construction enabling optimum leak tightness | Designed for non-fragmentation | Recommended for isolation of pressure relief valves | Metal tag with product identification and traceability data, as well as code symbol stamps as appropriate | Disk dome shielded by safety head inlet for all sizes | Locating pins ensure centering and correct orientation of the disk within the safety head | “Bite-type” seal for sizes 2”/50mm and larger to optimize leak tightness when appropriately installed | Flow arrow to indicate direction of flow after installation | Optional tell-tale connection in safety head outlet | Spiral groove with 125-250 AARH finish on both inlet and outlet safety head external mating surfaces to enhance gasket performance

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SKr-U Reverse Buckling Disk

The SKR-U™ rupture disk (bursting disc) is partnered with the UR-2 safety head to provide high integrity reverse buckling rupture disk (bursting disc) technology in a threaded union type holder. The SKR-U™ rupture disk (bursting disc) uses Saf™ technology (structural apex forming) to accurately control its burst pressure making it insensitive to the assembly torque variations that will occur in a threaded type holder.

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SURE-SAF™ System

The SKR-U™ rupture disk (bursting disc) is partnered with the UR-2 safety head to provide high integrity reverse buckling rupture disk (bursting disc) technology in a threaded union type holder. The SKR-U™ rupture disk (bursting disc) uses Saf™ technology (structural apex forming) to accurately control its burst pressure making it insensitive to the assembly torque variations that will occur in a threaded type holder.

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GCR-S™ Reverse Buckling Disk

One disk design for gas and liquid service | 
"Fail-safe" design - Damage-Safety Ratio <=1 | Low to high burst pressures | Ideal for CIP/SIP Service* | Installed with integral sanitary/aseptic gaskets | 8 to 16 micro-inch typical disk surface finish | Minimum dead space between process fluid and the disk | Suitable for operating pressures up to 90% of Marked Burst Pressure** or 95% of the specified minimum burst pressure (EN 4126-2) | Designed for non-fragmentation | O% Standard Manufacturing Design Range, optional - 5%, -10% | Withstands full vacuum at all burst pressures | SASTM (Sanitary Alert Sensor) with leak sensing option available | 
Integral burst disk sensor option | Worldwide patents pending

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The ECO-SAF System

Overpressure protection at the lowest available reverse buckling burst pressures. | 
Prevent fugitive emission from API storage vessels. The ECR disk may be installed below the emergency fire vent. Isolating the vent and eliminating leakage of the stored fluid. The vessels normal breathing vent will continue to operate. | Relief valve isolation, an ECR disk may be installed at the inlet of a safety relief valve offering the following benefits: Reduces fugitive emissions. | Less expensive valve trim may be used in corrosive applications. | Valve life is extended by isolating valve parts from corrosive fluid. | Sizes from 1" (25 mm) to 24 " (600 mm) Lowest burst pressure in a reverse buckling style disk. | Designed to be non-fragmentation. | Overpressure relief for either gas /vapor or liquid applications. | Suitable for operation pressures up to 90% of the minimum burst pressure. | High performance in pressure cycling or pulsating conditions. | If installed damaged, disk will burst at the nominal burst pressure. | Vacuum resistance. (May require additional vacuum support.) |
Low torque sensitivity | Disk acts as a positive seal to prevent fugitive emissions. | Smooth convex disk surface suitable for hygienic or polymerization applications. | Ideal for relief valve isolation. | Standard materials, Nickels, Alloys 200, Monel Alloy, Inconel Alloy 600, 316SS, Hastelloy C-276 and Tantalum.
Patent No: 5,368,180, 5,413,237, and 4,751,938.

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RB-90™ Reverse Buckling Disk

Isolates Safety Relief Valves | Designed for Minimal Fragmentation | Operates up to 90% Rated Pressure | Can Withstand Full Vacuum without Supports | Available in Sizes 1" thru 36" | Wide Material Availability

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MRB High Pressure Rupture Disk (Bursting Disc)

Sizes ⅜" to 4" | Pressure Ratings available up to 70,000 psig | Opens full bore with no flow restrictions | Design assures long service life with a very high resistance to fatigue | Non-torque sensitive | Maximum Operating Pressure to 90% of disk pressure rating | No knife blades required for opening | Use in gas or liquid service | Designed to adapt to customer's unique application

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Solid Metal Rupture Disk (Bursting Disc)

Electrical sensor to warn of open vent | Locking enclosure | Sealed enclosure for corrosive environments | Activated reclosing

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Composite Bursting Disc Type D

The Type D Composite Bursting Disc consists of a slotted metal top section and a plastic or metal seal membrane located at the concave or pressure side of the top section. The top section is the pressure zone and controls bursting rating of disc. Since the top section has open slots, the seal isolates it from process media and prevents leakage. Like the Type B Solid Metal Bursting Disc, the Type D composite disc is dome-shaped with an angular seating arrangement. Pressure is applied to dished or concave side, subjecting disc metal to tension loading.

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NU-SAF Rupture Disks

Sizes 1" to 8" (25 mm - 200 mm) | Pressures 19 - 1450 psig (1.3 - 100 bar) | 80% operating ratio | ± 5% Burst Tolerance | Flat Seal | Metal-to-Metal "bite type" seal | Tension loaded | Minimal fragmentation | Liquid and Gas service | Extended life | Reliable | Easy Installation | Leak-tight | Fail-safe | No vacuum support needed

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VAC-SAF™ Rupture Disks

Unique two-way acting disks prevent vessel damage from implosion under vacuum or over pressure | Available in sizes 50 mm to 200 mm | No-Vacuum relief pressures available from 110 mbar down to 10mbar | Not for gas or liquid applications | Disk offers smooth surface towards the process which prevents product accumulation and facilitates cleaning of the disk | Asymmetric alignment pins in the Safety Head mate with locating holes in the rupture disk (bursting disc) for proper alignment and installation | The standard material of the disks metal section is 316 SS. Consult BS&B regarding other materials, e.g. lnconel 600, Monel 400, Nickel 200 and Hastelloy C-276. The disk's seal material is fluoropolymer.

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ITC Cargo Gard

ITC DISK is available Worldwide for immediate delivery | No additional gaskets required for leak free service | Easy installation | Disk sizes available to fit all inter modal tank sizes | May be used in gas or liquid service. Liquid applications require gas pocket between liquid & disk | Smooth surfaces are towards process, which reduces product buildup | Installs between standard flanges such as BS 1 0 Table E, ANSI 150, DIN PN 10/16, BS4504, IS02084 | Fluoropolymer gaskets supplied as standard | Full opening achieved upon rupture | Can withstand full vacuum without vacuum supports | Available in standard sizes; 21/2" (65 mm) and 3" (80 mm). 11/2" (40 mm) made to order | Corrosion resistant stainless steel name tags attached

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SR-TC Rupture Disk

Available in standard AAR burst ratings | Resists overpressure surges of 125% to 140% of the disk's rated burst pressure | Simple Installation | Accurate | Superior Cycle life under pressure cycling conditions

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Assemblies Custom Rupture Disk (Bursting Disc)

BS&B will design the most cost effective solution for your application. We use state-of-the-art production methods including precision machining, CAD/CAM, electron beam or laser welding. BS&B has designed and manufactured customized rupture disk (bursting disc) assemblies to meet customer requirements in a wide range of industries including aviation, cryogenic or high temperature systems, fire suppression, plastic extrusion, aerospace and defense.

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MB & MBV Monoblock Graphite Disks

One-piece assembly and attached gaskets simplify installation and reduce down-time | Available sizes range from 0.5 to 24 inches (15 mm to 600mm) | Available temperatures range to 400 degrees Fahrenheit (205 degrees Celsius) | Vacuum supports are needed for disks rated below 22 psig (1.52 bar) and where a vacuum condition exists (Model MBV™) | Vacuum supports not needed for sizes 0.5", .75" (15 and 20 mm) | Temperature ranges -100 degrees Fahrenheit to 400 degrees Fahrenheit (-73 degrees Celsius to 205 degrees Celsius) | Armoring is recommended for all graphite disks for added safety, easier installation and elimination of breakage during installation | Armor reduces the possibility of a premature burst due to uneven or excessive torqueing of the flange studs | All MB™ disks supplied with integral gaskets | Available for installation between ANSI, DIN, AFNOR, BS and JIS pipe flanges & located inside the bolt circle

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IMB Monoblock Graphite Disks

Inverted MonoBloc disks are available to fit ANSI Class 150, Class 300 and Class 600 flanges for use in intermediate burst pressure applications up to 1000 psi | If a vacuum support is required, Model MBV™ disks must be specified | Temperature ranges -100 degrees Fahrenheit to +400 degrees Fahrenheit (-73 degrees Celsius to 200 degrees Celsius) | Armoring is recommended for all graphite disks for added safety, easier installation and elimination of breakage during installation | Armor reduces the possibility of a premature burst due to uneven or excessive torqueing of the flange studs | All IMB™ disks supplied with integral gaskets | Available for installation between ANSI, DIN, AFNOR, BS and JIS pipe flanges & located inside the bolt circle

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IMBL Monoblock Graphite Disks

Inverted MonoBloc disk with liner extends corrosion resistance and resists product build-up with the use of a PTFE liner | If a vacuum support is required, Model MBV™ disks must be specified, with PTFE coating | Temperature ranges –73 degrees Celsius to 205 degrees Celsius (-100 degrees Fahrenheit to 400 degrees Fahrenheit) | Armoring is recommended for all graphite disks for added safety, easier installation and elimination of breakage during installation | Armor reduces the possibility of a premature burst due to uneven or excessive torqueing of the flange studs | Corrosion resistant (except free flourine) | All IMBL™ disks supplied with integral gaskets | Available for installation between ANSI, DIN, AFNOR, BS and JIS pipe flanges & located inside the bolt circle | Inverted MonoBloc disks with liner extends corrosion resistance to practically all corrosives except free fluorine

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HTA™ High Temperature Assembly

The HTA™ comprises a flange compatible housing containing insulating material. When installed upstream of a graphite rupture disk (bursting disc), the HTA allows higher service temperatures. The HTA can be used in combination with the following BS&B Graphite Disk Types: MonoBloc Disks : MB, AMB, IMB, IMBL | Replaceable Element Disks: RE, REL 

RE/RE-7R Replaceable Element Disks

RE-7R™ Safety Head | The RE™ type disk is installed in a precision machined RE-7R™ safety head for direct installation between standard international pipe flanges | Flange Ratings | The safety heads are designed to fit between all standard international pipe flanges, ANSI, DIN, AFNOR, BS, JIS and to nestle within the flange bolts | Material: Safety heads are available in impregnated graphite or 316SS as standard | Patented: US 5,121,847 Japan 2611105

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REL/REL-7R Replaceable Element Disks

An REL™ type disk with a PTFE liner permanently attached to the process side of the disk can be supplied for extra protection against corrosive fluids or to prevent product build-up | REL-7R Safety Head: A locating pin on the REL disk mates with a location hole in the safety head outlet thus eliminating incorrect installation. The REL type disk is installed in a precision machined REL-7R Safety Head for direct installation between standard international pipe flanges | Flange Ratings: The safety heads are designed to fit between all standard international pipe flanges, ANSI, DIN, AFNOR, BS, JIS and to nestle within the flange bolts | Safety heads are available in impregnated graphite or 316SS as standard

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REV/REV-7R Replaceable Element Disks

The REV™ type disk is suitable for applications where vacuum conditions exist and when the burst pressure is less than 22psig (1.52 bar) | A locating pin on the REV™ disk mates with a location hole in the safety head outlet thus eliminating incorrect installation. The REV-7R™ safety head is provided with an integral non-opening vacuum support on the process side of the safety head | Supports are designed to maximize venting capacities while maintaining structural strength | The safety heads are designed to fit between all standard international pipe flanges, ANSI, DIN, AFNOR, BS, JIS and to nestle within the flange bolts | Safety heads are available in impregnated graphite or 316SS as standard

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EXPLOSION PROTECTION SYSTEMS

Explosion Vents and Panel

Unique, economic and patented design | Accurate reliable and leak tight | Enhanced abrasion resistance | One-piece metal construction without slits on the process side avoiding product accumulation | Optional design for aseptic/sanitary applications | No fragile PTFE seal that may puncture and admit moisture | Superior dynamic performance due to low mass compared with composite designs | Operating pressures up to 60% of the minimum tagged pressure rating (80% under certain conditions) | Thermal insulation available to permit use in operating temperatures to 2000°F/1093°C, to reduce heat loss or prevent condensation | Supplied with integral gaskets ready for installation | Fail-safe design, if damaged it will provide a relief opening below its rated pressure

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Flameless Venting

Flame, Dust and Pressure Control: Intercepts Quenches, Retains | 4 safety functions of the IQR System™ | Flame Arresting – No flame escapes providing a safe operating environment for personnel. Eliminates the possibility of a secondary ignition and subsequent explosion external to the protected equipment. | Dust Retention – Retains process product removing the possibility of potentially toxic product entering the environment. | Pressure Retention – Absorbs explosion pressure peak, protects personnel and surrounding environment from pressure blast. | Temperature Control – Absorbs fireball with negligible temperature rise in surrounding environment.

Explosion Suppression

BS&B Type IPD explosion suppression systems use a lightweight modular design to deliver extinguishing agents into a rapidly developing fire to suppress it before reaching destructive proportions. A typical system consists of a Unitized Sensor, a Power Supply Module, a System Monitor and several Explosion Suppression "Cannons." The Explosion Suppression Cannon module propels the extinguishing agent into the developing fireball of an explosion. Because the developing explosion has a head start on the actuation of the suppression system, the system must be rapidly actuated. Dynamic activation breaks up any compaction of dry chemical extinguishing agents, and releases stored pressure to deliver the agent at a very rapid rate. The function of the agent is to extract heat from the developing fireball. The amount of heat generated is a function of the size of the fireball, and the size grows rapidly with time. This requires that the Suppression System must react very quickly.

Building & Duct Vents

Zero maintenance | Low mass, simple installation | Designed for non fragmentation |
Available translucent construction | Excellent insulating properties | Simple replacement | May be applied to protect outlet side of vent relief ducting

Explosion Isolation Chemical

The BS&B Type IPD Chemical Isolation System provides protection to interconnected equipment in the event of an explosion. Ducting and piping connecting process equipment can propagate an explosion originating within a single piece of equipment. If unprotected, the ducting, piping, as well as all the connected vessels and equipment are at risk. The BS&B Chemical Explosion Isolation System is designed to inject a suppression agent into ducting and piping to interrupt the transport of burning material & quench the flame front. The industrial process equipment may be protected by one or more of the following techniques: Explosion Venting, Explosion Suppression, Explosion Containment

Explosion Isolation, Mechanical

Selection of the right mechanical isolation valve depends upon the maximum pressure that it must resist in the event of a deflagration.

Spark Detection & Extinguish

BS&B SparkEx® Spark Detection & Extinguishing System Prevent Fire and Explosion in Industrial Processes | Spark Detection, Flame Detection and Hot Particle Detection | Extinguish Without Stopping Production | Prevent Fire and Explosion Risks in Downstream Equipment | Activate Alarm and Control Systems | A Flexible Modular Design Allows for up-to-34 systems to be monitored through modular expansion | 
Wide-range of operating temperatures from 70°C (158ºF)to 200º (392°F) | Battery pack included for backup power in the event of an electrical outage | Trace Heating Available for Water Extinguishing in Extremely Cold Conditions

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BUCKLING PIN RELIEF VALVES

BPRV™ Buckling Pin Relief Valve

Buckling Pin technology offers an accurate and reliable means of calibrating pressure relief devices. BS&B has developed the BPRV™ Buckling Pin Relief Valve for in-line pressure or vacuum relief offering quick and simple external resetting. The BPRV is suitable for both gas and liquid applications, and provides a full relief opening at a pre-determined set pressure. Simple in-line installation | Maximum relief capacity | Convenient external reset | Set pressure is unaffected by cycling/pulsating pressures | Standard set pressures up to 275 psi | Set pressure is unaffected by valve orientation | The buckling pin is totally protected with a rugged enclosure

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SAF-T-PIN™ Buckling Pin Cartridge

Just "Push-In" and "Pull-Out". No Adjustments. No Tooling! An in-line device with high flow rate | The SAF-T-PIN™ Buckling Pin Cartridge is partnered with BS&B’s Buckling Pin Relief Valve (BPRV™) | Convenient external reset | Standard set pressures up to 275 psi | Special set pressures upon request | Damage safety ratio <1

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SENSORS & MONITORS

Burst Disk Monitor (BDM)

Our Burst Disk Monitor (BDM) provides immediate warning when and indicates where a rupture disk (bursting disc) has burst to relieve an overpressure condition. The BDM can be linked to activate other equipment simultaneously to control or to shut down the process. LCD displays for up to eight disk locations | Test and reset capabilities | Available with UL, FM and CSA approved barriers | NEMA Type 4 enclosure standard | 10 Amp SPDT relay output for each channel

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Burst Alert® Sensor

Each Burst Alert® Sensor is designed to operate in a “normally closed” electrical circuit. A polymer membrane is used to support an electrical conducting circuit. When the pressure event (disk rupture/valve opening) occurs, the flow of fluid places the polymer membrane in tension which leads to the break of a tantalum electrical conductor. This changes the electrical status of the sensor to “normally open.” Recommended operating limits for Burst Alert Sensors are a maximum current of 500mA, maximum voltage 24 VDC; satisfactory operation can be obtained at a few milliamperes current.

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Electronic Vis-U-Tec

Instantly Warns of a Ruptured Disk | Reduces Plant Down-Time | Reduces Product Loss | Minimizes Environmental Pollution | Re-useable - Reset the Piston Position | After replacing the ruptured disk, reset the Vis-U-Tec by pushing the piston fully back into the unit. | 12 inch (30cm) two-conductor cable | 316 SS construction for all wetted parts contacting process fluids | Viton O-ring seals the piston. | Operating temperatures range from - 40 °F (- 40 °C) to 400 °F (204 °C). | Maximum current: 250 mA | Maximum voltage: 24 Vdc | Suitable for intrinsically safe applications when used with certified apparatus (i.e. Zener Barrier) | Available with Aluminum Piston option that provides visual warning only.

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The Low Pressure LPS™ Reverse Buckling Disk and SRB-7RS Safety Head

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