Type B™

Sizes & Pressures

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

in	mm	psig		barg		psig		barg		psig		barg		psig		barg		psig		barg		psig		barg
Disk Size		Nickel Alloy 200				Monel Alloy 400				Inconel Alloy 600				Hastelloy Alloy C-276				316SS				Aluminum
in	mm	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max
0.5	15	280	20000	19	1379	340	25000	24	1724	440	30000	30	2068	–	–	–	–	625	30000	43	2068	80	1500	6	103
1	25	145	8000	10	552	175	10000	12	689	225	12000	16	827	400	12000	28	827	3200	12000	22	827	40	1500	6	69
1.5	40	95	6000	7	414	115	6000	8	414	150	6000	10	414	263	6000	18	414	210	6000	14	414	26	750	2	52
2	50	55	4000	4	276	67	4500	5	310	87	6000	6	414	150	6000	10	414	120	6000	8	414	16	570	1	39
3	80	41	2500	3	172	49	3200	3	220	63	4000	4	276	113	6000	8	414	90	6000	6	414	12	460	1	32
4	100	31	1900	2	131	37	2400	3	165	48	3000	3	207	85	6000	6	414	68	6000	5	414	9	360	1	25
6	150	23	1400	2	97	28	1800	2	124	36	2200	3	152	64	3600	4	248	51	3600	4	248	7	275	0.5	19
8	200	18	1100	1	76	22	1450	2	100	28	1700	2	117	50	3600	3	248	40	2100	3	145	5	205	0.4	14
10	250	14	800	1	55	17	1150	1	79	22	1400	2	97	–	–	–	–	30	1400	2	97	4	165	0.3	11
12	300	12	670	1	46	15	960	1	66	19	1000	1	69	–	–	–	–	27	1000	2	69	4	140	0.3	10
14	350	11	570	1	39	13	750	1	52	17	750	1	52	–	–	–	–	23	750	2	52	3	125	0.2	9
16	400	9	410	1	28	11	475	1	33	15	500	1	35	–	–	–	–	20	500	1	34	3	105	0.2	7
18	450	8	445	0.5	30	10	450	1	31	13	475	1	33	–	–	–	–	20	500	1	34	3	105	0.2	7
20	500	8	400	0.5	28	9	450	1	31	12	450	1	31	–	–	–	–	16	450	1	31	2	85	0.1	6
24	600	37	145	3	10	–	–	–	–	–	–	–	–	–	–	–	–	60	230	4	16	2	71	0.1	5

Note: Type B rupture disk technology is available up to nominal size 44” (1100 mm). Consult BS&B

Burst Tolerance

Marked Burst Pressure	Burst Tolerance
2 ≤ 15 psig (0.14 ≤ 1.03 barg)	± 1.5 psig (0.1 barg)
15 < 40 psig (1.03 < 2.8 barg)	± 2.0 psig (0.14 barg)
≥ 40 psig (2.76 barg)	± 5%

Safety Heads & Sensors

Safety Heads

FA-7R
Safety Head

Sensors

Burst Alert Sensors (BAS+)
Round or Square

Leak Detector Alert Sensors (LDAS+) Round or Square

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.

Saf-T-Change Quick Disk Replacement (QDR)

After activation, the replacement disk is quickly slid into place. Saving hours of lost production due to blown rupture disks.

Tell-Tale Assemblies & Excess Flow Valves/Gauges

A gauge tap in the outlet flange of the safety head may be considered when the safety head is installed in a vertical position.

Spare Safety Heads & Cap Screws

Jackscrews

When activated, the jackscrews effectively separate the flanges, providing adequate clearance to remove or insert a safety head and external gaskets.

Lifting Lug Eye Bolts

Eye bolts are recommended when weight and/or accessibility is a factor in lifting safety heads.

Baffle Plate

When a safety head is free-vented to atmosphere, a baffle plate may be considered to disperse overpressure and absorb recoil.

Documentation

Product Literature

B™ Disk – Solid Metal Rupture Disks Type B

Size, material and pressure ranges of tension loaded rupture disks (bursting discs)

Saf-T-Change™ QDR Rupture Disk Replacement System

Quick replacement of actives disk fast and with minimum process line exposure to personnel and the environment.

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.

Installations

Type B™ and D™ Rupture Disks® & FA-7R, Bolted, Union and Screw Type Safety Head Assemblies Installation Instructions

Burst Alert Sensor Installation Instruction

Burst Alert Leak Dectector Installation Instruction

Sizes & Pressures

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

in	mm	psig		barg		psig		barg		psig		barg		psig		barg		psig		barg		psig		barg
Disk Size		Nickel Alloy 200				Monel Alloy 400				Inconel Alloy 600				Hastelloy Alloy C-276				316SS				Aluminum
in	mm	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max	min	max
0.5	15	280	20000	19	1379	340	25000	24	1724	440	30000	30	2068	–	–	–	–	625	30000	43	2068	80	1500	6	103
1	25	145	8000	10	552	175	10000	12	689	225	12000	16	827	400	12000	28	827	3200	12000	22	827	40	1500	6	69
1.5	40	95	6000	7	414	115	6000	8	414	150	6000	10	414	263	6000	18	414	210	6000	14	414	26	750	2	52
2	50	55	4000	4	276	67	4500	5	310	87	6000	6	414	150	6000	10	414	120	6000	8	414	16	570	1	39
3	80	41	2500	3	172	49	3200	3	220	63	4000	4	276	113	6000	8	414	90	6000	6	414	12	460	1	32
4	100	31	1900	2	131	37	2400	3	165	48	3000	3	207	85	6000	6	414	68	6000	5	414	9	360	1	25
6	150	23	1400	2	97	28	1800	2	124	36	2200	3	152	64	3600	4	248	51	3600	4	248	7	275	0.5	19
8	200	18	1100	1	76	22	1450	2	100	28	1700	2	117	50	3600	3	248	40	2100	3	145	5	205	0.4	14
10	250	14	800	1	55	17	1150	1	79	22	1400	2	97	–	–	–	–	30	1400	2	97	4	165	0.3	11
12	300	12	670	1	46	15	960	1	66	19	1000	1	69	–	–	–	–	27	1000	2	69	4	140	0.3	10
14	350	11	570	1	39	13	750	1	52	17	750	1	52	–	–	–	–	23	750	2	52	3	125	0.2	9
16	400	9	410	1	28	11	475	1	33	15	500	1	35	–	–	–	–	20	500	1	34	3	105	0.2	7
18	450	8	445	0.5	30	10	450	1	31	13	475	1	33	–	–	–	–	20	500	1	34	3	105	0.2	7
20	500	8	400	0.5	28	9	450	1	31	12	450	1	31	–	–	–	–	16	450	1	31	2	85	0.1	6
24	600	37	145	3	10	–	–	–	–	–	–	–	–	–	–	–	–	60	230	4	16	2	71	0.1	5

Note: Type B rupture disk technology is available up to nominal size 44” (1100 mm). Consult BS&B

Burst Tolerance

Marked Burst Pressure	Burst Tolerance
2 ≤ 15 psig (0.14 ≤ 1.03 barg)	± 1.5 psig (0.1 barg)
15 < 40 psig (1.03 < 2.8 barg)	± 2.0 psig (0.14 barg)
≥ 40 psig (2.76 barg)	± 5%

Safety Heads & Sensors