AV™ Two Way Acting Rupture Disk

Performance Features

Same burst pressure in both directions
Suitable for operating pressure to 60% of the minimum burst pressure
Damage safety ratio ≤ 1
Vacuum resistant with additional vacuum support
Optional fluoropolymer liner/coating
Available with ASME “UD” (0%, Manufacturing Design Range)
Pressure Equipment Directive “CE” marking and/or other International Certifications
BS&B proprietary technology

* Type AVV rupture disk has a non-opening vacuum support which will reduce the minimum net flow area. Consult BS&B for flow area information based on size and burst pressure.

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Sizes & Pressures
Burst Tolerance
Sensors
Accessories
Documentation

Sizes & Pressures

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

in	mm	psig		barg
Disk Size		Stainless Steel
in	mm	min	max	min	max
1	25	10	150	0.7	10.3
1.5	40	7	150	0.5	10.3
2	50	5	150	0.3	10.3
3	80	4	150	0.3	10.3
4	100	2	150	0.1	10.3
6	150	1	100	0.1	6.7
8	200	1	100	0.1	6.7
10	250	0.6	60	0.04	4.1
12	300	0.6	60	0.04	4.1
16	400	0.6	60	0.04	4.1
18	450	0.5	60	0.03	4.1
20	500	0.5	60	0.03	4.1
24	600	0.5	60	0.03	4.1
28	700	0.5	60	0.03	4.1
30	750	0.5	60	0.03	4.1
32	800	0.35	40	0.02	2.8
36	900	0.25	40	0.02	2.8
40	1000	0.25	40	0.02	2.8
44	1100	0.25	40	0.02	2.8
48	1200	0.25	40	0.02	2.8

For sizes larger than 48” (1200mm) contact BS&B for burst pressures. Note: Type AV disks are burst tested by BS&B using ASME/ANSI/B16-s class 150 weld neck flange dimensions. Contact BS&B for alternatives.

Burst Tolerance

Marked Burst Pressure	Burst Tolerance
< 5 psig (0.345 barg)	± 1 psig (0.069 barg)
5 psig < 20 psig (0.345 barg < 1.38 barg)	± 1.5 psig (0.103 barg)
20 psig < 40 psig (1.38 barg < 2.76 barg)	± 2 psig (0.138 barg)
> 40 psig (2.76 barg)	± 5%

Sensors

DAS Sensor

Accessories

BS&B supplies many of the Accessories required to safely and conveniently install our overpressure relief devices and complementary products. Through our professional team and global network of sales engineers and procurement personnel, we are able to provide the highest quality accessory products to meet your installation requirements.