Forward Acting Metal Bursting Disks

Serie(n): SZ
Typ(en): SZ-X / SZ-M / SZ-MV

Forward acting metal bursting disks are installed in a standard holder SHZ or in a pre-torqued holder SHZ Pro between flanges. They are especially suitable for securing medium to high working pressures.


  1. SZ-X
    STRIKO - Forward Acting, X-shaped Pre-Scored
  2. SZ-M
    STRIKO - Forwar Acting, Multilayered
  3. SZ-MV
    STRIKO - Forwar Acting, Multilayered, Vacuum Supported

Design Examples

SZ-M in holder SHZ
SZ-M in holder SHZ
SZ-X in holder SHZ
SZ-X in holder SHZ

Advantages in the application

  1. fragment-free opening behaviour
  2. ideal as single pressure relief unit or used in combination with safety valve
  3. high working ratio: up to 90%
  4. “Fail-Safe” design – incorrect installation leads to bursting of the SZ-X at or underneath the actual burst pressure
  5. also obtainable with a PTFE-liner
  6. equipped with a 3D name-plate for safe detection of correct direction of installation as a standard
  7. suitable for gasses, vapours and liquids



Stainless steels, nickel, special materials such as hastelloy, tantalum

Nominal widths

DN 15 – DN 250

Burst pressures

from 0.02 bar (g) to 200 bar (g)

Working ratio

up to 90 %

Burst tolerance

min. +/- 5 %

Utilisation temperature range

-200 ℃ to +480 ℃

Bursting disk holder

SHZ and SHZ Pro

Vacuum support


Burst indicator

optionally installed on discharge side

Installation before safety valve?

yes, since fragment-free opening

Accessories - Alarm transmitter

  1. SVT 02
    Burst Indicatior for breakage of bursting disk / opening of safety valve
  2. SVT 05
    Leakage sensor (activates already for the smallest leaks)
  3. SVT AM
    Full metal alarm for bursting disk monitoring (for high temperatures up to +600 ℃ and at aggressive media)
  4. SVT AM-L
    Alarm for bursting disks/breakage monitoring (use for lowest burst pressures, from 10 mbar (g))

Individual solutions

There are a number of design options for the forward acting metal bursting disks. Whether vacuum resistant, with PTFE-liner or manufactured from special materials – just talk to our specialists. We are happy to advise you competently and comprehensively, in order to find the right solution for your application.

Your contact for Forward Acting Metal Bursting Disks

Answering your questions precisely and competently - that is our goal.
Simply get in touch directly with your contacts from the divisions.

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