Reasons Why a Rupture Pin is Superior to a Rupture Disk

When it comes to pressure relief, both rupture pins and rupture disks provide enhanced safety in comparison with spring or pilot operated relief valves. Yet, a major drawback of a rupture disk is that its stress at the burst point is greater than the yield stress. This makes it imperative to completely replace the disk once it has been pressured beyond the yield point. A new disk means an additional investment of both time and money.

On the contrary, the rupture pin has no such shortcomings. The Rupture Pin Valve is based on Euler's Law of Compressed Columns to buckle a metallic pin that senses an axial force from a piston that senses system pressure.

Let’s look at some other advantages of a rupture pin that make it a smarter alternative to a rupture disk:

• The rupture pin doesn’t cause air or ground pollution or product loss as is the case with disks.
• The pin opens in milliseconds, offering full bore relief and can be replaced in a few minutes by a single person.
• The pin cannot fatigue, nor can it change the set point offering optimum protection.
• ASME has set a variation tolerance of +/-5%.

To see a year-on-year comparison of the estimated costs of a rupture pin and rupture disk, please visit www.rupturepin.com/comparepinsanddiscs.html. To discuss your industrial or commercial pressure relief needs with Rupture Pin Technology, visit us at www.rupturepin.com.