Rupture Disk
The original rupture disk (bursting disc) manufacturer shaping the growth of pressure relief devices for over 80 years.

REL/REL-7R Replaceable Element Disks

An REL™ type disk with a PTFE liner permanently attached to the process side of the disk can be supplied for extra protection against corrosive fluids or to prevent product build-up.
  • REL-7R Safety Head
    A locating pin on the REL disk mates with a location hole in the safety head outlet thus eliminating incorrect installation. The REL type disk is installed in a precision machined REL-7R Safety Head for direct installation between standard international pipe flanges.
  • Flange Ratings
    The safety heads are designed to fit between all standard international pipe flanges, ANSI, DIN, AFNOR, BS, JIS and to nestle within the flange bolts
  • Material
    Safety heads are available in impregnated graphite or 316SS as standard
  • Patented: US 5,121,847 Japan 2611105

Specifications

Nominal Size
Burst Ratings @ 22ºC (72ºF)
Internal
Diameter
Total Assembly Thickness
min. max. 316SS Graphite
in.
mm
barg
psig
barg
psig
mm
in.
mm
in.
mm
in.
1 25 0.69 10.0 30.0 435 32 1.26 28 1.10 28 1.10
1.5 40 0.69 10.0 20.0 290 48 1.89 28 1.10 31 1.22
2 50 0.69 10.0 15.0 217 64 2.52 28 1.10 32 1.26
2.5 65 0.69 10.0 12.0 174 76 2.99 30 1.18 37 1.46
3 80 0.69 10.0 10.0 145 89 3.50 35 1.38 42 1.65
4 100 0.69 10.0 8.0 116 114 4.49 37 1.46 47 1.85
5 125 0.69 10.0 6.0 87 140 5.51 40 1.57 47 1.85
6 150 0.69 10.0 5.0 72 165 6.50 44 1.73 47 1.85
8 200 0.69 10.0 4.0 58 216 8.50 50 1.97 61 2.38
10 250 0.69 10.0 3.0 43 267 10.51 53 2.09 68 2.68
12 300 0.69 10.0 2.5 36 318 12.52 61 2.40 76 2.99
14 350 0.69 10.0 2.0 29 356 14.02 63 2.48 80 3.15
16 400 0.69 10.0 1.5 21 406 15.98 70 2.76 83 3.27
18 450 0.69 10.0 1.5 21 457 17.99 77 3.03 92 3.62
20 500 0.69 10.0 1.2 17 508 20.00 88 3.46 105 4.13
24 600 0.69 10.0 1.2 17 610 24.02 93 3.66 111 2.37