Rupture Disk 42 / STA-KUL series / Forward Acting, MOP 90%, 5.4 ~ 49.7, 1/4" ~ 3/4"

Type : Forward Acting
Application : Steam, Gas, Liquids
Set Burst Pressure : SS 316, Inconnel w/Liner, 8.1 ~ 49,7 Bar @ 260
Set Burst Pressure : Nickle w/Liner, 5.4 ~ 49.2 @ 260
Max. Operating Pressure : 90 %
Manufacturing Range : 0%, 5%, 10%
Temperature : -196 ~ 593 C
Size : 1/4" ~ 3/4"

BS&B 42 / STA-KUL series D or DV Disc is designed for Gas Cylinder protection.
http://www.bsbsystems.com/Rupture_Disks/Forward_Acting_Disks/custom_rupture_disk_assemblies.html