Forward-acting solid metal rupture disk

Depending on the type of rupture disk, its operating ratio Is different For example, reverse-acting rupture disk has the highest operating ratio 90-95%, and forward-acting solid metal rupture disk has the lowest operadng... 

Figure 4.8 Forward-acting solid metal rupture disk. (Courtesy American Petroleum Institute, 1220 L Street, NW, Washington, D.C.)...

For rupture disk u.sed at PRV inlet, it should be non-fragmenting design to avoid damaging PRV. Rupture disks, such as forward-acting solid metal disk and graphite rupture disk are of fragmenting design, should not be used at PRV inlet. 

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