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Reverse Acting RD

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zacharialamsyah

Chemical
Nov 26, 2013
54
Dear all

When we must use Rupture Disc type Reverse acting? Is this type can withstand higher pressure instead of Direct Acting? More hazardous chemical? What the advantages and disadvantages of this type?

Highly appreciate for your response and answer

Best Regards
Zachari Alamsyah
 
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Reverse Acting is the most common type, in my experience. They have a narrower tolerance range for their ACTUAL bursting pressure versus the SPECIFIED pressure. Reverse Acting are actually for moderate pressures, and Direct are for higher pressures. Personally, I specify/buy Reverse *if* one is available for the diameter and pressure needed. For high pressures, you are stuck with Direct and a broader tolerance range.
 
"more reliable" = less uncertainty [inherent tolerance] as to the actual bursting pressure versus the specified bursting pressure. "They work better"
 
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