AVB-ST™ Sanitary Rupture Disks

Performance Features

Designed for gas, liquid and multi-phase service
Suitable for operating pressure to 70% of the marked burst pressure (75% of the minimum burst pressure) – Overpressure direction
Suitable for operating pressure to 55% of the marked burst pressure (60% of the minimum burst pressure) – Vacuum direction
Pressure Equipment Directive “CE” marking and/or other International Certifications
BS&B proprietary technology
Suitable for use in a flanged or sanitary holder

Sizes & Pressures
Burst Tolerance
Safety Heads & Sensors
Documentation

Sizes & Pressures

AVB™ 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: Burst range includes all tolerances. No additional manufacturing design range

AVB™ 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

Note: Burst range includes all tolerances. No additional manufacturing design range

Burst Tolerance

Marked Burst Pressure	Burst Tolerance
3 to 5 psig (0.2 to 0.4 barg)	± 25 psig
6 to 8 psig (0.4 to 0.6 barg)	± 20 psig
9 to 12 psig (0.6 to 0.8 barg)	± 15 psig
13 to 17 psig (0.9 to 1.2 barg)	± 10 psig
18 to 25 psig (1.2 to 1.7 barg)	± 7 psig
26+ psig (1.8+ barg)	± 5 psig

Safety Heads

VB-C Safety Head

Sensors

KBA-S™

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.