Dalian Ligong Safety Equipment Co.,Ltd


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Dalian Ligong Safety Equipment Co.,Ltd

Rupture Disk (Bursting Disc) and Safety Relief Valve Combination

May 18, 2018

The ASME Pressure Vessel Code permits the use of a rupture disk (bursting disc) device at both a safety relief valve’s inlet and outlet. This combination of rupture disks (bursting discs) and safety relief valves is becoming more and more common in oil, chemical, and petrochemical plants.
This valve-disk combination may have previously been considered by some merely as an added expense.  It is now well accepted, however, that isolating a safety relief valve in this manner actually saves money in the following, five ways:

  • Zero process leakage to the atmosphere;

  • Longer periods between major overhauls;

  • Valves can be checked in place;

  • Less expensive valve trim material can be used; and

  • Valve life is extended by isolating corrosive fluids from internal valve parts.

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