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Continental Disc Corporation, established in 1965, has been a leader in the industry of designing and testing rupture discs, becoming the first rupture disc company to construct an ASME-certified flow laboratory, and the only rupture disc company with an ASME-certified liquid loop. The Continental Disc Flow Lab was used to develop the KR Flow Restriction Test Method, now employed by all rupture disc manufacturers with an ASME-certified product.
With a response time of milliseconds, Continental Disc Corporation’s ASME accepted Flow Test Laboratory is adaptable to run a wide range of flow tests. And with the addition of the new Liquid Flow Loop, the Flow Test Laboratory can now run the full range of flow tests in both air and liquid.
The Flow Test Laboratory includes a 16-channel, state-of-the-art high speed data acquisition system capable of reading up to 500,000 samples per second. This hardware, coupled with pressure/temperature instrumentation and custom written software, creates a measurement system that conforms to the stringent testing requirements of ASME Performance Test Codes (PTC-25).
Continental Disc Corporation is accredited and authorized by the ASME to utilize the ASME UD Code Symbol Stamp for product built in accordance with the requirements of the ASME Boiler and Pressure Vessel Code, Section VIII, Division 1.
Rupture disc products manufactured in accordance with all applicable rules of ASME Code Section VIII, Division 1 must carry the ASME UD Code Symbol Stamp on the tag, as well as the certified flow resistance (K R) and minimum net flow area (MNFA) values. The “NB” stamp acknowledges The National Board of Boiler and Pressure Vessel Inspectors as the organization that certified the flow tests.
The complete line of CERTIFLOW® rupture discs meet all ASME Code requirements, including KR and MNFA values. With the extensive line of CERTIFLOW rupture discs, there is one available to meet most applications and operating conditions.
“K” values are pressure loss expressed as the number of velocity heads and they are available for nearly all piping system devices and components, including rupture discs.
Rupture disc devices should be included in the flow equation in the same manner as all other system components to determine the relieving capacity of the entire relief system.
Design engineers are provided with certified KR values:
• Which enable the designer to meet ASME Code Section VIII, Division 1 for relief system design
• Which may permit a reduction in pipe size and associated piping costs when utilized during a relief system design
• For use when evaluating relief systems where two-phase flow may occur
• For use when re-evaluating existing relief systems to comply with design documentation requirements of OSHA CFR 1910.119,”” Process Safety Management of Highly Hazardous Chemicals.””
