RE™ Graphite Rupture Disk

Performance Features

Designed for gas, liquid and multi-phase service
Suitable for operating pressure to 80% of the marked burst pressure (85% of the minimum)
Vacuum resistant (additional vacuum support required for some burst pressures)
Available with ASME “UD” (select 0% Manufacturing Design Range)
Pressure Equipment Directive “CE” marking and/or other International Certifications
Optional fluoropolymer liner/coating
Optional HTA™ High Temperature Assembly
BS&B proprietary technology

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Sizes & Pressures
Burst Tolerance
Armored Option
Safety Heads & Sensors
Documentation

Sizes & Pressures

RE™, REL™, REV™ Disk Specifications Minimum/Maximum Pressure with Rating at 72° (22°C)

Disk Size		psig		barg		316ss		Graphite
Disk Size		Burst Pressure				Total Assembly Thickness ‘A’
in	mm	min	max	min	max	in	mm	in	mm
1	25	10	435	0.7	30	1.1	28	1.1	28
1.5	40	7	290	0.5	20	1.1	28	1.2	31
2	50	3	217	0.2	15	1.1	28	1.3	32
2.5	65	3	174	0.2	12	1.2	30	1.5	37
3	80	2.2	145	0.2	10	1.4	35	1.7	42
4	100	2.2	116	0.2	8	1.5	37	1.9	47
5	125	1.5	87	0.1	6	1.6	40	1.9	47
6	150	1	72	0.1	5	1.7	44	1.9	47
8	200	1	58	0.1	4	2	50	2.4	61
10	250	1	43	0.1	3	2	53	2.7	68
12	300	1	36	0.1	3	2.4	61	3	76
14	350	1	29	0.1	2	2.5	63	3.2	80
16	400	1	21	0.1	2	2.8	70	3.3	83
18	450	1	21	0.1	2	3	77	3.6	92
20	500	1	17	0.1	1	3.5	88	4.1	105
24	600	1	17	0.1	1	3.7	93	4.4	111

For proper sizing, see the BS&B website or contact BS&B for appropriate K_R values

Burst Tolerance

Marked Burst Pressure	Burst Tolerance
< 1 psig (0.07 barg)	-0/+0.75 psig (0/0.05 barg)
1 - 15 psig (0.07 barg < 1.03 barg)	± 0.75 psig (0.05 barg)
> 15 psig (1.03 barg)	± 5%

For sizing, see the BS&B website or contact BS&B for appropriate K_R

Example: If a Saf-T-Graf RE type disk is ordered with a 29 psig (2 bar) burst pressure, it will burst between 27.5 psig (1.9 bar) and 30.5 psig (2.1 bar). For reduced tolerances contact BS&B.

Armored Option

An armoring ring is recommended for all graphite disks for added safety eliminating premature bursting of the disk due to uneven or excessive torquing of the pipe flange studs. Armoring minimizes the probability of damage in transit and during installation. Carbon steel armor is standard with stainless steel offered as an option. Armoring is standard in the following sizes and with burst pressures in excess of the following: