Description
A high-performance, corrosion-resistant rupture disc, ideal for systems that require low burst pressures.
A versatile line of high-performance, corrosion-resistant rupture discs, our composite discs generally consist of a metal top section and a metallic or non-metallic seal, with optional vacuum support, protective rings, gaskets or outlet liner.
A versatile line of high-performance, corrosion-resistant rupture discs, our composite discs are ideal for systems that require lower burst pressures than standard discs can provide.
Our composite rupture discs consist of two or more metallic or non-metallic components. The components typically consist of a metal top section and a metallic or non-metallic seal, with optional vacuum support, protective rings, gaskets or outlet liner.
This rupture disc features a flat seat design for superior metal-to-metal sealing. If you are looking for a 30° angled seat with a "light lip," ideal for normal operating pressures, try our standard 30° seat rupture disc.
A composite disc for every application
We manufacture several preformed composite rupture discs to suit numerous applications.
The metal top section can be made from a variety of materials, depending on your application and corrosion resistance requirements. Seals, protective rings, gaskets and liners can also be made from a variety of materials to meet your needs. Contact us or see our preformed composite rupture disc brochure for full details.
Our exclusive seven-hole design
Our preformed composite rupture discs feature a seven-hole pattern at the apex of the rupture disc top section. This unique configuration, combined with the pre-scored sections along the dome, provides non-fragmenting characteristics when used with a non-metallic or fluoropolymer seal.
By using this seven-hole design, thicker, more durable materials can be used to manufacture the rupture disc, while maintaining a high operating-to-burst pressure ratio of 80%.
Several seal material options, such as fluoropolymers and exotic metals, help ensure excellent corrosion resistance. CDC non-metallic seals are essential for minimizing fragmentation.
Preformed style or flat style?
We offer two composite rupture disc design styles: a preformed style, such as the CDC or PLV rupture disc; and a flat style, such as the CDC ENVIRO-SEAL rupture disc.
Our preformed styles include:
CDC Type: Uses a slotted metal top section and a fluoropolymer or metal seal on the process side of the top section. Provides corrosion protection and excellent performance in low-pressure applications where no backpressure or vacuum is expected.
CDCV Type: Same design as the CDC type, with the addition of vacuum support installed on the process side of the seal. Provides process-side support for full vacuum conditions.
PL Type: Similar to the CDC type, with the addition of a corrosion-resistant fluoropolymer liner placed on the outlet side of the top section.
PLV Type: Same design as the PL type, with the addition of a vacuum support on the outlet side of the top section. The outlet liner is positioned above the vacuum support, protecting the metal top section and the vacuum support from corrosive elements in the atmosphere.
Nominal Size Range: 1″ – 36″ (25 mm – 900 mm)
Burst Pressure Range: 2 psig – 1440 psig (0.138 barg – 99.3 barg)
Maximum Recommended Operating Ratio: 80% of the rupture disc's nominal (marked) burst pressure
Seat Configuration: Flat seat
Service: Liquid or gas
Compatible with BDI Alarm System?: Yes
ASME Code Symbol Stamp Available?: Yes
Materials not listed or shown may be available through special design. Contact us for more information.