BIO-SAF™ System
BIO-SAF™ System
BS&B's comprehensive range of sanitary rupture disks (bursting discs), holders, and fittings has been specially designed with a uniformly smooth internal finish in non-contaminating materials for overpressure protection in sanitary/aseptic applications. The Bio-Saf range meets the demanding sanitary criteria necessary in today's pharmaceutical, biotechnology and food processing industries.
All BS&B sanitary disk holders and fittings are designed with a standard sanitary clamp configuration to permit easy and fast disk installation. The holders may be connected to other sanitary tubing or fittings using standard clamps and sanitary gaskets. Holders and fittings are also available with butt, tank weld end connections or a flush mounted option.
Surface Finish
Our standard surface finish on rupture disk (bursting disc) holders and fittings is 20~25Ra on all wetted parts. Polishing or electropolishing is used to meet customer special requirements.
Reverse Buckling and Composite Disk Nomenclature
Reverse buckling and composite disks are offered in type -S or type -ST (e.g. RLS-S, RLS-ST) to permit the use of a smaller sanitary connection.
Manufacturing Range of Reverse Buckling Disks
All reverse bucking disks may be offered with a 0%, 5% or 10% manufacturing range. The range is applied to the minus side of the requested burst pressure.
Example: If a disk is ordered with 75 psig (5.17 barg burst pressure and a 10% manufacturing range, it will be tagged at a burst pressure between 67.5 psig (4.65 barg) and 75 psig (5.17 barg).
Burst Tolerance of Reverse Buckling Disks
Burst tolerance is the maximum variation from the tagged burst pressure.
Disk tagged above 40 psig/2.76 barg.................... ±5%
Disk tagged at 40 psig/2.76 barg and below.......... ±2 psig/0.138 barg
Features and Benefits
- 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
