Reverse-acting rupture discs should be installed with the process pressure against which side of the disc?

Reverse-acting rupture discs are designed to fail or rupture at a predetermined pressure, providing a safety mechanism to avoid overpressure situations. The distinctive feature of reverse-acting rupture discs is their construction, where the convex side is the one intended to face the process pressure.

When the pressure builds up, it acts against the convex side of the disc. This design helps to maintain the integrity of the disc under normal operating conditions until the pressure reaches a certain threshold. Once that threshold is exceeded, the disc will rupture, allowing for the release of pressure and thus protecting the system from potential damage.

By installing the rupture disc with the process pressure against the convex side, the disc functions correctly and utilizes its design to handle conditions safely. This setup is essential to ensure that the rupture disc performs effectively and safely, making the understanding of the correct orientation critical for technicians and engineers working with pressure systems.