Type B
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SOLID METAL RUPTURE DISKS

TYPE B TENSION LOADED SOLID METAL RUPTURE DISK The Type B Solid Metal Disk, available in many sizes and metals, withstands mild or severe corrosive conditions, elevated or cold temperatures, static or pulsing pressures – and still provides reliable overpressure protection for pressure systems within defined limits. The design utilizes a dome-shaped disk with a 30° angular seating arrangement. System pressure is applied to the dished or concave Type B Rupture Disk – Prebulged solid metal disk with angular seat, before and after rupture. side, subjecting disk metal to tension loading. Type BV...

Type BR Rupture Disks for Minimum Disk Burst Pressure If the pressure rating for a Type B Rupture Disk is at or near the minimum, a thin disk is dictated and a BR protective rating is required. When Type B disk should use BR protective ring If burst pressure for Type B disk is lower than those shown below for standard sizes and disk metals, a BR protective ring should be considered. All ratings are psig. Type BR Rupture Disk: A Type B thin disk with heavier gauge metal BR ring attached to top side Type BRR Rupture Disk: A Type B thin disk with BR rings attached to both top and bottom sides...

Type B Solid Metal Rupture Disks for Elevated or Cold Temperature Service Minimum/maximum burst pressure ratings for standard Type B Rupture Disks at 72°F are included on pages 6 and 7. To determine burst pressure rating at elevated or cold temperatures, a temperature correction factor must be applied to ratings at 72°F. The temperature conversion table on page 5 applies only to BS&B Type B series solid metal disks and cannot be used for Type D Composite Disks or reverse buckling disks. Data used to develop the table has been obtained from reliable sources; however, BS&B does not warrant...

Applications 1. Maximum Operating Pressure Maximum operating pressure is 70% of stamped burst pressure for long service life, depending on disk metal. Higher operating pressures fatigue the disk, resulting in premature bursts. 2. Broad Application Range Gas or Liquid Service; Static or cycling service; High temperature and pressures; and Broad Range of materials and sizes. One piece construction allows for wide variety of material construction. Broad ranges from 1/8 to 44inch sizes. 3. Fragmentation The Type B ruptures in a random pattern and thus fragments. Consult BS&B when pressure...

Specifications for Type B Disks Min/Max Pressure Rating at 72°F (22°C) higher or lower bursting pressures than those listd and in other materials are available on special order. Special metals: Platinum, Titanium, Hastelloy C-276. The following BS&B rupture disks are standard. Those in the most popular materials and bursting pressures are available for quick delivery. Disks with Disk Material - Unlined Disks Disk Size mm psig barg psig barg psig barg psig barg barg psig barg psig barg barg psig barg For 30” (762mm) - 44”(1117.6mm) Size, consult BS&B for ratings and availability FEP Lined...

FEP Lined Disks Inconel® Alloy 600 Disk Size Minimum Maximum Pressure Pressure 2-side 1 &2 sides Minimum Pressure Minimum Maximum Pressure 1-side Pressure 2-side 1 &2 sides Maximum Pressure 1 &2 sides For 30” (762mm) - 44”(1117.6mm) Size, consult BS&B for ratings and availability Type B Solid Metal Rupture Disks for Bolted, Flange, and Union Type Safety Heads Linings - Standard materials: FEP Plastic (Teflon®) Maximum temp. 400°F Special materials: TFE plastic (Teflon®) Maximum Temp. 500°F Coatings -Vinylite, a mild corrosion retardant for disk metal can be applied to one or both sides of...

Safety Heads for Type B Rupture Disks BS&B Bolted Type Safety Heads are normally compat- ible with ANSI (ASA) pipe flanges and the flanged connections used on most pressure vessels. Safety Head flanges feature angular seating design to accom- modate Type B Solid Metal Disks. The BS&B Quik-Sert is a reduced outside diameter flat-faced flange assembly (FA-7R) that nests between the studs of two ANSI (ASA) flanges. Flanges and rupture disk are preassembled to assure proper instal- lation of disk (not at factory). The complete safety head can be removed without removing discharge pip- Union...