Forward acting, or conventional rupture disks (bursting discs) have been a mainstay in process applications since BS&B developed the first rupture in 1931. Developed in 1934, the Type B disk, the "granddaddy" of all rupture disks (bursting discs) is still the disk-of-choice in many applications.
Applying load to the concave side, the disk is subjected to tension forces. Forward acting disks regulate burst pressures by the tensile strength of the material.
For low burst pressures, the Type D disk has a slotted metal top section and a metal or fluorocarbon seal. For higher operating ratios, the scored NU-SAF family of disks is often selected for polymerization processes. Our VAC-SAF line offers protection from excessive vacuum or overpressure.
For tank car applications, the ITC disk protects intermodel tank containers while the SR-TC is a surge resistant disk for railroad took cars and over-the-road trailer service industry.
A wide range of standard rupture disk (bursting disc) assemblies is available for your specific application. These Threaded and Welded Assemblies are discarded after disk rupture. Customized designs are available for customer applications that cannot be met using standard assembly designs.