This range of composite (compression loaded) reverse discs are ideal for the relief of vacuum and over-pressure situations. The patented design overcomes the requirement for a holder complete with blade for opening and allows for instantaneous system relief at ultra low pressures. The Posi-Gard and Vac-Gard will attain full relief within 1 second from the start of reverse. Both products offer non-fragmenting opening and, as a result of their modular content, can be offered to meet a broad range of non standard specifications / applications. The Posi-Gard and Vac-Gard can be provided with an ATEX approved burst detection device.
