BS&B Safety Systems Rupture Discs & Explosion Protection Solutions

SKr, FKB, and CSR Reverse Buckling Rupture Discs

BS&B Safety Systems SKr, FKB, and CSR series reverse buckling rupture discs provide premier engineered overpressure protection for chemical pressure vessels, distillation reactors, process piping systems, and cryogenic storage facilities.

Featuring a precision domed metallic membrane oriented convex to the incoming process flow, the disc operates under compression loads, entirely eliminating fatigue stress and allowing continuous operating pressure ratios up to 90–95% of the stamped burst pressure.

Upon reaching the calibrated setpoint, the dome instantaneously reverses and petals cleanly along circular scored hinge lines without metal fragmentation, safeguarding downstream pressure relief valves (PRVs) against corrosive process media.

Its inherent geometric dome stiffness provides full vacuum and backpressure resistance without requiring supplementary internal supports.

B, D, and AV Forward-Acting and Composite Rupture Discs

BS&B B, D, AV, and B-Plus series conventional forward-acting and composite rupture discs represent proven overpressure relief solutions for industrial process piping, high-pressure autoclaves, gas separators, and reciprocating compressor units.

Designed with the concave side facing the process media, the disc operates under tensile stress until tensile burst occurs across the crown dome.

Composite series D and AV incorporate a precision slotted metallic top section laminated with a fluoropolymer PTFE/FEP seal, enabling ultra-low burst pressure ratings while ensuring complete hermetic containment of toxic or corrosive chemicals under full vacuum conditions.

Rigid metallic supports are incorporated to prevent collapse during reverse pressure cycles.

GCR-S, GCR-SM, and Clamp-Saf Sanitary Rupture Discs

BS&B GCR-S, GCR-SM, Clamp-Saf, and SR-H aseptic sanitary rupture discs are purpose-engineered for sterile pharmaceutical bioreactors, biotech fermentation vessels, cosmetic processing, and food production systems.

Featuring an electropolished crevice-free surface finish (Ra <= 0.4 um / 15 uin), these discs prevent microbial accumulation and endure aggressive Clean-in-Place (CIP) and Steam-in-Place (SIP) thermal cycles up to 150 deg C.

Designed for direct mounting between standard Tri-Clamp hygienic fittings (ISO 2852, DIN 32676, ASME BPE), each disc is pre-fitted with FDA and USP Class VI compliant gaskets, ensuring non-fragmenting operation that protects sterile active pharmaceutical ingredients during relief events.

SRB-7RS and Safety Head Type UR-2 Rupture Disc Holders

BS&B SRB-7RS, SR-C, SRB-7FS, and Safety Head Type UR-2 rupture disc holders deliver precision alignment, uniform clamping loads, and bubble-tight sealing across high-pressure industrial process piping.

Featuring a pre-torqued assembly architecture, the bursting disc is securely clamped between the holder inlet and outlet rings using calibrated cap screws prior to field installation.

This isolates the sensitive burst membrane from uneven piping stresses, misaligned companion flanges, and thermal expansions, while asymmetric locator pins prevent reverse orientation during turnaround maintenance.

Machined flow cavities ensure maximum discharge coefficient values across varying flow regimes.

SmartDisk, BAS, BDI, and BDI-FLX Burst Detection Sensors

BS&B SmartDisk, Burst Alert Sensors (BAS), BDI, and BDI-FLX electronic burst detection sensors deliver instantaneous alarm notification to plant DCS, PLC, and emergency shutdown systems upon rupture disc activation.

Configured with a precision tantalum or copper conductive trace printed on a flexible fluoropolymer carrier, the sensor installs seamlessly on the vent side of the rupture disc holder.

When overpressure bursts the membrane, the fluid flow severs the conductive circuit, triggering an immediate open-loop alarm in hazardous areas (Zone 0/1/2, Ex ia IIC T6, ATEX, IECEx compliant).

Non-invasive mounting ensures zero impact on disc burst calibration while eliminating nuisance false alarms.

Vent-Saf Explosion Vents and FlamQuench II Flameless Devices

BS&B IPD (Industrial Protection Division) engineers advanced passive and flameless dust explosion protection technologies for storage silos, baghouse dust collectors, bucket elevators, spray dryers, and cyclone separators.

Vent-Saf series explosion relief panels (models VSP, VSS, EXP/DV) feature calibrated stainless steel panels designed to vent dust deflagrations at set pressures from 0.05 to 0.5 bar.

For machinery located inside factory buildings, FlamQuench II and FlamQuench SQ flameless venting modules extinguish the flame ball within stainless steel mesh heat sinks, dissipating pressure safely without venting fire into indoor personnel areas.

This effectively prevents secondary combustible dust explosions and protects plant assets.

BPRV Buckling Pin Relief and Isolation Valves

BS&B BPRV (Buckling Pin Relief Valves) series fast-acting relief and isolation valves represent an advanced engineered alternative to conventional spring-loaded safety valves on high-pressure gas pipelines, offshore platforms, and petrochemical facilities.

Operating on Euler's fundamental law of column buckling, a precision-calibrated buckling pin holds the valve disc rigidly closed until the critical axial load is reached.

At setpoint, the pin buckles instantaneously, permitting full-bore unobstructed passage within milliseconds without chatter, and can be returned to operational readiness by inserting a replacement pin externally in minutes.

Bubble-tight shutoff is maintained right up to the set relief point without weeping.

FlameSaf 931-937 Deflagration and Detonation Flame Arresters

BS&B FlameSaf 931, 933, 934, 935, and 937 series in-line and end-of-line flame arresters deliver essential explosion containment for tank storage farms, flare header systems, vapor recovery units, and flammable process pipelines.

Certified for gas explosion groups IIA, IIB1–IIB3, and IIC according to ISO 16852 and ATEX directives, the core flame-quenching element is fabricated from crimped stainless steel ribbon wound into tight triangular micro-channels.

As a flame front enters the matrix, the high surface area rapidly absorbs combustion heat, cooling the gas below its auto-ignition threshold and arresting both deflagrations and unstable detonations with minimal flow pressure drop across header conduits.