The Manufacturing Range MR

The thickness of one material for manufacture of a disk, along with the specific disk type, is the key factor in establishing at what pressure range a disk of a specified 

As allowed by code [1], the average of the manufacturer s disks burst tests could be stamped, for example, (144 + 160.5)/2 = 152.3 psig with an actual 5% of 152.3 psig allowed for actual burst pressure of any disk at the operating temperature. 

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