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Rupture Disks & Measurement Devices – Dynisco

Under “Rupture Disks & Gauges,” Dynisco offers safety and pressure-relief devices for industrial processes. A rupture disk (or “burst plug”) is a passive over-pressure protection: when the system pressure (or a combined pressure/temperature threshold) is exceeded, the thin metal membrane bursts and instantly relieves the pressure. This safeguards machines, process lines and personnel against dangerous overpressure or sudden pressure spikes — commonly used in plastic extrusion, injection molding, chemical or process plants.

In addition to passive protection, Dynisco provides associated pressure gauges or transmitters allowing continuous monitoring of operating pressure. Thus, users can detect critical conditions early or verify that everything operates within safe limits — combining rupture-safety with active surveillance and measurement.

Questions & Answers on Rupture Disks & Measurement Devices

What is a rupture disk / burst plug?

A safety device consisting of a thin metal membrane designed to rupture at a predetermined pressure (or pressure/temperature combination), providing immediate pressure relief if the threshold is exceeded.

Where are rupture disks used?

In pressure vessels, pipelines, extruders, injection-molding systems, chemical reactors or any pressure-driven process where overpressure or sudden pressure spikes must be safely relieved.

Why use a rupture disk instead of a relief valve?

Rupture disks react extremely quickly, are maintenance-free, have no moving parts, do not require power and offer a highly reliable fail-safe protection — ideal for critical over-pressure protection or as backup to relief valves.

What pressure ranges are covered by Dynisco rupture disks?

Depending on the model, a wide pressure range — from moderate up to very high pressures — enabling use across many applications from extrusion to high-pressure processing.

How is a rupture disk constructed?

Typically a metal body with a thin, pre-stressed or scored membrane (e.g. made of Inconel or stainless steel). When the design pressure is exceeded, the membrane ruptures predictably, releasing the pressure. Variants include flat or domed membranes depending on the application's requirements.

What happens after activation of a rupture disk?

The process medium is vented or relieved through the opened disk; the disk itself is destroyed and must be replaced — it is a one-time safety device.

Why does Dynisco offer associated gauges or sensors?

Because pressure monitoring helps detect approaching critical conditions before the rupture disk needs to act — enabling preventive maintenance, process control and improved safety.

In which industries are such solutions used?

Plastic processing (extrusion, injection molding, blow molding), chemical and polymer processing, hydraulic systems, high-pressure reactors, and any industrial environment needing reliable overpressure safety and control.

What should be considered when using a rupture disk?

Correct selection of burst pressure (and possibly temperature rating), ensuring safe venting paths, replacement after activation, and adherence to safety requirements regarding venting, environment and pressure relief discharge.

Are rupture disks compatible with measurement devices?

Yes — when combined with pressure sensors, gauges or transmitters, the system allows both passive safety and active monitoring, giving a complete pressure control solution for industrial applications.