For 20 years, GRUPA WOLFF has been delivering a broad assortment of solutions protecting process equipment and plants against damage resulting from an uncontrolled increase or drop of pressure in the system (Bursting Discs). Safety plates are one of basic safeguards of the type. The devices perform a similar function as safety valves, except that they have to be replaced after actuation. On the other hand, safety valves are much cheaper than valves due to a simpler construction. An important thing is that safety plates can be applied both independently and in combination with a safety valve. In case of a plate-valve set, the plate function consists in protection of the valve against the corrosive impact of the operation environment and impurities. This solution allows to apply a cheaper valve with a lower material design class. The safety plates offered by GRUPA WOLFF are characterised by a complete tightness, resistance to pressure fluctuations in the system and a long failure-free operation time.

Standard design safety plates for simple applications

Single-layer safety plates

Single-layer safety plates are intended mainly for simple applications and high bursting pressures. The plates have been designed so that the bursting pressure is a resultant of selection of the proper thickness and strength of the material used.

Safety plates for pressure equipment

Innovative safety plates with a patented design, created for protection of pressure apparatus, pipelines, gas cylinders, reactors, as well as various type tanks against excessive overpressure and underpressure. The pates have smooth process surfaces (without incisions, indentations and imperfections), which makes them perfect suitable for sanitary applications in food, biotechnology and pharmaceutical industries.

Safety plates for sanitary and aseptic applications

Safety plates are intended for sanitary and aseptic applications, therefore, they are a perfect solution for pharmaceutical, biotechnological and food industries. Moreover, due to their properties, they can be successfully applied for gases, vapours and liquids. The safety plates presented have on the process side perfectly smooth, convex surfaces, without any dead spaces. Their design allows for operation with pressures reaching 98% of the bursting pressure value.

Bilateral action safety plates

Bilateral action safety plates substitute two standard plates due to their unique construction. The important thing is that the device offered can have different opening pressure values for over- and underpressure. This type of safety membrane is characterised by a lack of fragmentation after action and reliability. Bilateral action safety plates can be applied for gases and liquids. Most frequently, they are mounted in non-pressure tanks.

Heads for safety plate installation

The heads are used for trouble-free mounting of safety plates with the use of flange, welded or screwed connection. This solution provides for a high tightness of the system, a proper plate operation and a long life span. The heads can be heated or cooled (e.g. in case of the substances which can be subject to polymerisation, stick to the plate, etc.).