Rupture disc manufacturers

No, and we prefer to be clear about that. The manufacturer of the rupture discs we supply is STRIKO Verfahrenstechnik GmbH. We are STRIKO’s exclusive agent for the Netherlands, Belgium and Luxembourg. That means we handle advice, selection, quotation, delivery and support for customers in those three countries. We also supply graphite rupture discs and rupture disc holders with the associated documentation. Our role is to translate your process data into the right disc and holder. STRIKO’s role is to manufacture, test and calibrate that disc. For you, the result is one local point of contact backed by a specialised factory.

Start by asking how the tolerance is defined and what determines it. For every disc, the tolerance around the set burst pressure follows from material properties and the manufacturing process. A manufacturer should be able to explain that link without hesitation. Ask next how burst pressure is verified, because recognised standards require testing of discs from the production batch. Then ask how the test results are used, since that shows whether the process improves over time. STRIKO works to a philosophy of testing, evaluating and recalibrating for exactly this reason. Also ask how the temperature at the moment of bursting is taken into account, as the effective burst pressure can fall at higher temperatures. The answers tell you more about a manufacturer than any brochure.

Metal rupture discs fall under the Pressure Equipment Directive, ISO 4126 and CE marking, with EN 14491 relevant where explosion safety is involved. Rupture disc holders have their own framework. Ours are designed in line with ASME Section VIII, EN ISO 4126 and PED 2014/68/EU. Where a holder is installed in a potentially explosive atmosphere, ATEX applies as well. Burst detection sensors used in such zones need suitable ATEX certification too. Which requirements apply exactly depends on the installation, the medium and the country of use. That is why we check the applicable requirements as part of every selection. Tell us which codes your project is built to and we will match the disc, holder and documents to them.

At minimum you want documents that prove what the disc is, what it is made of and at what pressure it is designed to burst. For our holders we supply material certificates to EN 10204 3.1. Pressure calculations and inspection reports are part of the package as well. Traceability is provided per component, so every part can be followed back to its origin. For graphite discs the emphasis is on traceable material quality and burst pressures tested in advance. Documentation should be fit for audits and compliance checks, not just for goods receipt. Ask for a sample document set before ordering so your quality department can review it in advance. That avoids discovering a gap only when the inspector is on site.

The STRIKO programme covers several families of rupture discs. Flat metal rupture discs are intended for standard applications. Forward acting metal discs are designed for high pressure environments. Reverse acting metal discs are chosen for durability and efficiency. Aseptic metal discs serve the pharmaceutical and food industries. Extruder discs are built for demanding polymer processing, and rupture discs for tank containers protect transport tanks. Compact burst plugs with a threaded connection complete the range. We help you choose the family and the exact design that suits your process conditions.

A local agent adds knowledge of your region and often of your installations. For customers in the Benelux, we give technical advice on the design, selection and application of STRIKO products. We deliver quickly and support you during maintenance or replacement. When a disc opens unexpectedly, a short line to someone who knows your tag data saves valuable time. We also handle engineering questions, from disc and holder combinations to FEM analyses on request and HAZOP studies. Our office in Monster is open Monday to Friday from 09:00 to 17:00. The manufacturer remains responsible for production, testing and calibration. Together that gives you factory quality with support close to your plant.

We generally advise against it. The burst pressure of a disc depends partly on how it is clamped, positioned and sealed in the holder. A holder designed for a different disc geometry can change that load and with it the burst behaviour. A poorly matched holder can cause premature failure, leakage or a wrong burst pressure. That is why we always select disc and holder as a combination. Holder material is also chosen together with the process data and the disc being used. If you have existing holders in the plant, send us the tag data and drawings so we can assess the situation. Safety should never depend on the assumption that two parts will fit together.

Every serious manufacturer will ask for roughly the same data set. First comes the medium and its composition. Then the operating pressure including peaks and the required burst pressure. Temperature is needed twice, for normal operation and for the relief scenario. The connection, nominal diameter, back pressure and available installation space complete the technical picture. For replacements, the existing tag data and current specification are often enough to start. Mention also which standards and documents your project requires and whether burst detection is needed. Send that set to sales@dutchvalvevision.com and we will come back to you with a STRIKO proposal.