SGKKUB and SGKODV pressure relief devices, are rupture discs with integrated signalling, that reduce the number of required installation points and enable safe pressure relief, including monitoring of the rupture disc even at lowest burst pressures, and temperatures of up to 300 °C.
The supervision of rupture discs is a relevant factor for many operators. Until now, this included additional effort, since the signalling device was a separate component. By integrating a signalling device into the rupture disc, REMBE is able to offer a simple, cost-effective solution for the monitoring of rupture discs.
Integration reduces the number of installation points and increases leak-tightness
Thanks to the sophisticated design it is not necessary to route a cable out of the rupture disc holder, which avoids the need for a cable gland and thus leads to increased leak-tightness of the installation.
The SGK rupture disc guarantees safe and reliable pressure relief and signalling even at the lowest burst pressures and temperatures up to approx. 300 °C. It consists of either the popular KUB reverse acting rupture disc, or alternatively the three-layer rupture disc ODV, and the signalling membrane SGK.
Whereas for conventional rupture discs and signalling the rupture disc had to be installed separately from the signalling device, the new SGKKUB and SGKODV can be easily installed and maintained as a single component.
With the SGKKUB, the signalling device as the top layer is facing away from the process and thus ideally protected. In the SGKODV three-layer rupture disc, the signalling is located between the sealing membrane and the upper part of the rupture disc.
KUB and ODV – proven classics for the chemical, pharmaceutical and food industries
The general term “forward acting rupture discs” covers all types whose domed side of the disc faces away from the process when installed, which also includes the ODV. The precisely defined breaking points of these rupture discs are attached to the top of the domed side in multi-layer designs so that the risk of product accumulation or other damages by the process medium will be minimised. This ensures that the defined burst pressure can be permanently guaranteed.
With reverse-acting rupture discs like KUB, the domed side of the disc faces towards the process, the precisely defined buckling pins are located on the underside of the domed side, on the vent side.
Since the process pressure of reverse-acting rupture discs acts on the domed side of the rupture disc, a comparatively high operating pressure ratio can be achieved with these rupture discs. The operating pressure ratio is the ratio of the working pressure present in the system (during normal operation) to the minimum burst pressure of the rupture disc.