AV-ST™ Sanitary Rupture Disks

Performance Features

Designed for gas, liquid and multi-phase service
Suitable for operating pressure to 60% of the minimum burst pressure
Damage safety ratio ≤ 1
Pressure Equipment Directive “CE” marking and/or other International Certifications
BS&B proprietary technology

Sizes & Pressures
Burst Tolerance
Safety Heads & Sensors
Accessories
Documentation

Sizes & Pressures

AV-ST™ Positive Pressure Disk Specifications Minimum/Maximum Pressure with Rating at 72° (22°C)

in	mm	min	max	min	max
Disk Size		Burst Pressure				Relief Area
Disk Size		psig		barg
3	80	5	100	0.35	6.89	Full
4	100	5	100	0.35	6.89	Full
6	150	3	85	0.21	5.86	Full
8	200	3	85	0.21	4.48	Full

Note: Standard material 316 stainless steel. Other disk sizes, materials and burst pressures are available upon request - consult BS&B. FEP/PTFE liners are available on the process side of the disk in sizes from 2” (50mm) and above. Maximum temperature for 316ss is 750°F (399°C). Maximum temperature for FEP/PTFE is 500°F (260°C).

AV-ST™ Vacuum Relief Disk Specifications Minimum/Maximum Pressure with Rating at 72° (22°C)

in	mm	min	max	min	max	psig	barg	in²	cm²
Disk Size		Burst Pressure				Burst Range		Relief Area
Disk Size		psig		barg		Burst Range		Relief Area
3	80	3	10	0.2	0.7	± 0.5	± 0.4	2.0	13.1
4	100	2	10	0.1	0.7	± 0.5	± 0.4	3.6	23.1
6	150	1.5	6	0.1	0.4	± 0.3	± 0.02	5.9	38.3
8	200	1	6	0.1	0.4	± 0.3	± 0.02	9.3	59.7

Burst Tolerance

Marked Burst Pressure	Burst Tolerance
≤ 40 psig (2.76 barg)	± 2 psig (0.138 barg)
> 40 psig (2.76 barg)	± 5%

Safety Heads

FF-C Safety Head

Sensors

KBA-S Sensor

Product Literature

Bio-Saf Series

Our comprehensive range of sanitary rupture disks (bursting discs) and holders for use in sanitary/aseptic applications in the pharmaceutical, biotechnology and food processing industries

Burst Alert Sensors

A range of sensors suitable for different rupture disk types used to provide immediate warning of a ruptured disk., #77-1003

Detec Saf Alarm System - Burst Disk Monitor

Detec-Saf™ alarm system provides immediate warning and specific location of disk rupture and centralized monitoring of all disk locations.