BURST RATING TYPES RATED, SPECIFIED AND MIN/MAX Three rating types are available to specify the burst pressure requirements of a Continental Disc Corporation rupture disc: RATED, SPECIFIED and MIN/MAX. The need to choose a specific rating type can be narrowed down to two main reasons: Code Compliance For compliance with ASME Section VIII Division 1, the RATED rating type must be used. For compliance with the Pressure Equipment Directive 97/23/EC (to carry the CE Mark) and the ISO 4126-2 standard, either the SPECIFIED or MIN/MAX rating type must be used. Customer Preference To specify the rupture disc bursting requirement and how that information is marked on the rupture disc tag. RATED RATED RATING TYPE: DEFINITIONS RATED Burst Pressure // The customer-indicated burst pressure value at a coincident temperature that indicates the amount of differential pressure necessary to cause the rupture disc to burst. A Manufacturing Range is applied to this value. Manufacturing Range // The pressure range agreed upon by the customer and Continental Disc Corporation in which the RATED (Marked) Burst Pressure must fall. This range of pressure is based on a plus and/or minus percentage or a plus and/or minus pressure value applied around the indicated RATED Burst Pressure. RATED (Marked) Burst Pressure // The burst pressure at coincident temperature that the rupture disc tag is marked with after manufacturing. A Burst Tolerance is applied to this value. Burst Tolerance // The pressure variation around the RATED (Marked) Burst Pressure that the rupture disc will burst, at the coincident temperature. PHOTO CAPTION Maximum Recommended Operating Pressure // Continental Disc’s recommendation of the maximum pressure to operate the rupture disc in order to maximize the life of the rupture disc. This is used as one of the indicators in determining an appropriate type of rupture disc for an application.

RATED RATING TYPE: INSTRUCTIONS FOR USE The customer should indicate the RATED Burst Pressure, along with a Manufacturing Range. Standard Manufacturing Ranges are based on the product and the RATED Burst Pressure. The Burst Tolerance and the Maximum Recommended Operating Pressure are based on the product and the RATED (Marked) Burst Pressure. This information can be found in the RATED Rupture Disc Rating Type table, located in the appropriate product literature. Because the RATED (Marked) Burst Pressure of the rupture disc can be marked anywhere within the Manufacturing Range, initial pressure...

3URST RATING TYPES DATASHEET // PAGE 3 SPECIFIED RATING TYPE: DEFINITIONS SPECIFIED Burst Pressure // The customer-indicated burst pressure value at a coincident temperature that indicates the amount of differential pressure necessary to cause the rupture disc to burst. This value will be marked on the rupture disc tag. A Performance Tolerance is applied to this value. Performance Tolerance // The pressure variation around the SPECIFIED Burst Pressure that the rupture disc will burst, at the coincident temperature. This range of pressure is based on a plus and/or minus percentage or a plus and/or...

MIN / MAX MIN/MAX RATING TYPE: DEFINITIONS MAX Burst Pressure (MAX) // The customer-indicated burst pressure value at a coincident temperature that indicates the maximum amount of differential pressure necessary to cause the rupture disc to burst. This value will be marked on the rupture disc tag. MIN Burst Pressure (MIN) // The customer-indicated burst pressure value at a coincident temperature that indicates the minimum amount of differential pressure necessary to cause the rupture disc to burst. This value will be marked on the rupture disc tag. Maximum Recommended Operating Pressure // Continental...