Protect Your Extrusion Machine from Overpressure

Demands on extrusion machinery have become more challenging in recent years due to increased production demands and the desire to extend the working life of the equipment. These two ongoing factors tend to lead to excessive pressure build-up in an extrusion machine, which can lead to major machine breakdowns, costly downtime and operator safety issues.

Always consider the following 4 product features when looking for a bursting disk solution to protect your extruder against overpressure:

1. “Welded” Structure, Not Brazed

Traditionally, a thin bursting disk membrane is attached to the threaded body using a soldering process that can fatigue in its periodic application and lose strength and bursting strength as temperatures rise to the planned extrusion temperature. This can lead to reduced service time, costly downtime, unpredictable maintenance and, in extreme cases, even damage to the extruder machine itself. Today’s modern welding technology eliminates all these concerns, making it possible to produce high quality and long lasting extruded blast disks that are interchangeable and unaffected by fluctuating temperatures. In addition, the welded construction allows for flat mounting, which reduces the potential for product build-up at a soldered joint.

2. Full Traceability

A pressure relief device is designed to protect capital equipment and facility personnel and must therefore be constructed from certified materials in accordance with recognized, global standards by a manufacturer experienced in the field of pressure relief.

Always ask who, where and what standards are adhered to to ensure the highest quality pressure relief device. This must be supported by certified material, test certificates issued by the raw material manufacturer and explosion and leakage test certificates issued by the device manufacturer.

3. Final Product Tests

In a completed production of extrusion type rupture discs, a series of final acceptance tests are mandatory to qualify the finished product. To ensure compliance with industry standards, destructive testing of the appropriate quantity of finished products to meet international standards is essential. Leak testing should be performed to avoid costly downtime and to ensure that the extrusion type rupture disk connection is perfect on each completed unit.

Examining and applying different connection types can be subjective when it comes to traditional methods. By performing 100% electronic connection verification with an optical comparator, every connection, step, etc. in the device is verified. compared with international standard. This allows the plastic to be installed correctly on the extruder without fear of damaging the threads inside it.

4. Documentation and Labeling

Always insist on obtaining appropriate documentation detailing the results of destructive and non-destructive testing performed during production. Also insist that such destructive and non-destructive testing be carried out in accordance with recognized international standards such as ISO 4126-2 / PED.

Insist that rupture discs be permanently marked according to the specified standard, including manufacturers’ serial number, burst pressure, temperature and manufacturers’ name.

Safety is very important, material and performance certifications should never be compromised, and cost-cutting methods should never be used on very important basic equipment such as rupture discs.

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