SKr-U Reverse Buckling Disk
SKr-U Reverse Buckling Disk
Introduction
The SKR-U™ rupture disk (bursting disc) is partnered with the UR-2 safety head to provide high integrity reverse buckling rupture disk (bursting disc) technology in a threaded union type holder. The SKR-U™ rupture disk (bursting disc) uses Saf™ technology (structural apex forming) to accurately control its burst pressure making it insensitive to the assembly torque variations that will occur in a threaded type holder.
The UR-2 safety head is available in three standard nominal sizes: 1/2 " / 15mm,3/4_" / 20mm, and 1" / 25mm. Standard inlet & outlet female threads are 1/2 ", 3/4 ", and 1" NPT. Custom thread configurations are available. The SKR-U™ rupture disks (bursting discs) are identified SKR-U™1/2" / 15mm, SKR-U™¾" / 20mm, SKR-U™ 1" / 25mm and are all supplied with permanently attached 3-D metal identification tags.
Temperature
The design temperature for the UR-2 Union safety head is 700 deg F / 371 deg C. All of the standard holder and rupture disk (bursting disc) materials are available up to this limit except for Titanium & Tantalum. Titanium is limited to 572 deg F / 300 deg C, and Tantalum is limited to 500 deg F / 260 deg C.
Thread Connection Options
While the standard thread connections are _", _" and 1" NPT female inlet & outlet, the following alternatives are available within the same overall dimensions.
Burst Pressure Tolerances
BS&B applies both a burst tolerance and a manufacturing design range to the SKR-U™ rupture disk (bursting disc). Whether North American ASME, European Pressure Equipment Directive or ISO standards are followed, the approach is the same.
