Zook RA8 Bursting Discs – Reverse Acting Metal

Design:

• Scoreless design offers higher cycle life compared to scored reverse acting discs
• Certified for liquid, gas, or two-phase applications

Manufacturing Ranges:

• 0%, -5%, and -10% ensure the marked rating on the disc tag does not exceed the MAWP of the equipment

Vacuum Support: Withstands full vacuum without the need for vacuum support

Back Pressure Resistance: Withstands back pressure up to the positive set pressure of the disc

Product Build-Up Resistance: Smooth convex side exposed to the process media to resist build-up

Damage Ratio: 1.0 or less

Alignment: Unique alignment pin design ensures proper disc orientation in the RAH holder

Tag Information: 3-dimensional stainless steel tag, permanently engraved with complete disc specifications

• Non-Fragmentation: Designed for safe operation without generating debris
• Longer Cycle Life: Scoreless design offers higher cycle life compared to traditional scored reverse acting discs
• Versatile Application: Certified for liquid, gas, or two-phase applications, making it suitable for various industries
• Vacuum and Back Pressure Resistance: Capable of handling full vacuum and back pressure up to the disc’s set pressure
• Easy Maintenance: When used with the RAH Pre-Torque Holder, the RA8 discs allow for simplified installation and maintenance
• Durable Identification: Stainless steel tag with permanent engraving ensures easy identification and compliance

• Chemical Processing
• Oil & Gas
• Pharmaceutical Manufacturing
• Petrochemical Plants
• General Industrial Applications

Functions

• Pressure Relief Systems
• Safety Devices in Piping Systems
• Applications requiring non-fragmenting rupture discs

Features

• High Operating Ratio: Can operate up to 95% of the minimum burst pressure, maximizing efficiency
• Non-Fragmenting Design: Ensures safe operation with a damage ratio of 1.0 or less
• Wide Range of Sizes and Materials: Available in multiple sizes and materials to suit various applications
• Temperature Flexibility: Optional TFE liners for corrosive media, with temperature ratings dependent on liner use
• Compliance: Meets ASME UD, CE, and TUV standards for global application