The LPL composite rupture disc incorporates a fluoropolymer outlet liner, a metallic top section, and a seal on the process side for added protection against corrosion and buildup.

It is ideal for primary and secondary system relief protection, and an optional non-fragmenting design provides an effective means of fugitive emission control when the disc is used to isolate a safety relief valve. The Composite Rupture Disc is recommended for use in systems that have a maximum operating pressure of up to 80% of the rupture disc’s marked burst pressure.

The LPL is suitable for static, cyclic, or pulsating operating conditions but requires a vacuum support to withstand vacuum. When ordering, please specify if your application requires a non-fragmenting disc.

The LPL includes a high-visibility flow direction tag for easy installation, correct orientation, and at-a-glance inspection. All LPL rupture discs 1″ (25 mm) nominal size and above include a flow direction tag.

Our seven-hole pattern

Our composite rupture discs are designed with a seven-hole pattern at the apex of the rupture disc dome and six radiating precut sections. Used in conjunction with a non-metallic or fluoropolymer seal, these elements prevent fragmentation when rupturing.

The seven-hole pattern allows construction with heavier materials, resulting in a higher maximum recommended operating ratio – up to 80%.