Rupture Discs / Burst Discs

A rupture disc is a thin metal or metal and plastic membrane which functions as a designed weak point in a pressurized system.

It is designed, fabricated and tested to burst open at a predetermined, precise pressure point, thus relieving pressure in the system in a controlled manner.

The rupture disc functions like a pop off valve on a pressure cooker or a fuse in your electrical system at home.

Rupture discs protect pressure vessels and piping systems from damage due to overpressure conditions within the system. When properly installed, a rupture disc can also help to protect personnel, equipment and the environment.

Safety Valves / Relief Valves / Safety Relief Valves

Relief valves are similar to rupture discs in that they protect systems and equipment from overpressure. However a rupture disc is a non-reclosing device that bursts only once whereas a relief valve can reseat once the overpressure recedes and can be used over and over.

A relief valve will not offer the same sealing benefits as a rupture disc and there are applications where one or the other device is preferred and some applications where both are used together in series.

Conservation Vents / Breather valves / Pressure Vacuum Vents

Conservation vents are very low pressure relief valves that allow atmospheric storage tanks to effective breath air or Nitrogen in and out of the tank during pump in / pump out operations.

They also allow conservation of the product when used with a blanket regulator in a Nitrogen Blanketing system.