Bursting discs

We produce pressure bursting discs Comat. These pressure bursting discs are designed to protect pressure vessels, chemical reactors, pipelines, and similar pressure elements as a protection system against overpressure or underpressure.

Bursting disc Comat B

Bursting disc Comat B

Bursting disc Comat B

Bursting discs Comat have been developed and manufactured in the Czech Republic since 1991. We continually upgrade and modify these bursting discs for new customer needs. At present, we have a set bursting discs Comat of Hastelloy alloy (nickel – chromium – molybdenum) in portfolio for use in highly aggressive, oxidative and chemical environments of technology units.

Data sheet-bursting discs

Function of pressure bursting discs Comat

Membrane fuses ensure overpressure and underpressure. They are designed to protect pressure systems. It can be used as a safety valve supplement to provide absolute leakage of the pressure systems. If necessary, the fuse is supplemented with a vacuum restraint, ie an element to prevent overturning and damage to membrene.

Comat membranes bursting discs are designed so that membrane inside them is broken if the pressure differential on membrane exceeds the prescribed value at the specified temperature.

Types of bursting discs Comat

  • COMAT A – membrane pressure bursting disc with retaining ring
  • COMAT B – membrane pressure bursting disc with two rings
  • COMAT X – membrane pressure bursting disc with rings and tip

Outside of the above types, we also supply special version pressure bursting discs, according to the specific requirements of the customer.


Type of membrane: Push, pull, flat
Low pressure diaphragms: 0 – 4 bar
Medium pressure diaphragms: above 4 – 10 bar
High pressure diaphragms: over 10 bar – 60 bar
Diaphragms for very high pressures: over 60 bar and more
Material: Nickel (99,3% – 99,5 %), hastelloy, monel, stainless steels, Al alloy, titanium, copper, nylon, teflon, PVDF
Dimension: DN 10 to DN 150
Type of joint: Flange, clamp, fittings

Bursting disc Comat X – Hastelloy

Bursting disc Comat X – Hastelloy

Bursting disc Comat X – Hastelloy

Bursting disc Comat – Clamp

Membrane Comat

Bursting disc Comat – Clamp

Bursting discs Comat are supplied for specialization

Pharmaceutical, chemical and food industries

  • Chemical reactors
  • Pressure vessels
  • Storage tanks
  • Piping systems
  • Technical s distribution


  • Cooling systems
  • Airbag assemblies
  • Extinguishing systems

Electrotechnical industry

  • Transformer cabinets
  • Production and distribution

Engineering cabinets

  • Pumps
  • Compressors
  • Valves
  • Engines