GCR-S? Reverse Buckling Disk
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Reverse Buckling Disks BSBSystems.com | BSB.ie Visit our website for the most complete, up-to-date information Pictured: GCR-S™ series reverse buckling disk uses innovative SAF™ (Structural Apex Forming) technology offering a wide range of burst pressures for sanitary / aseptic applications in the pharmaceutical, biotechnology and food industries. The type GR-C™ outlet (pictured on the back) provides quick and easy installation of the GCR series reverse buckling disk onto an existing standard sanitary inlet fittings. The uniquely designed gasket helps eliminate inverted installation of the rupture disk. US Patents 5,996,605 and 6,178,983 apply; International patents pending The GCR-S™ and GCR-SM™ disks are also available with integral sensors to provide warning of a burst rupture disk, specify types GCR-SS™ and GCR-SMS™. Disk Specification Min / Max Burst Pressure at 72°F (22°C) Sanitary fitting Burst pressure Nominal disk size Overall height Optional SAS™ for use between standard sanitary/aseptic fittings to provide warning of a burst rupture disk. Leaking disk detection is also available; consult BS&B for details. The GCR series disks and GR-C outlet fitting are available in 316L ss as standard. Alternative materials are available on request. Other burst pressures may be available - consult BS&B The GCR family of reverse buckling disks is designed with a circular score line located at the edge of the domed area. At the marked burst pressure, the disk’s dome reverses and opens by shearing around the circular score line. The GCR series uses SAF™ technology enabling very low burst pressures to be achieved with excellent opening characteristics. • One disk design for gas and liquid service • “Fail-safe” design damage safety ratio < 1.0 • Wide range of pressures • Ideal for CIP / SIP service • Installed with integral sanitary / aseptic gaskets • 8 to 16 micro-inch typical disk surface finish • Minimum dead space between process fluid and the disk • Suitable for operating pressures up to 90% of marked burst pressure* or 95% of the specified minimum burst pressure (CEN standard pending) • Meets ASME BPE standards • Designed for non-fragmentation • 0% standard Manufacturing Design Range - optional -5%, -10% • Withstands full vacuum at all burst pressures • Available SAS™ (Sanitary Alert Sensor) or LDS (Leak Detector Sensor) with leak sensing capability • Integral burst disk sensor option *At marked burst pressures of 40 psig (2.76barg) and below, the recommended maximum operating pressure is 90% of the marked burst pressure, less 2 psig (0.138barg) tolerance SAF™ Technology: Damage-Safety Ratio <1 Structural Apex Forming (SAF) technology, the central “dimple,” present in all GCR series rupture disks, combined with the unique energy absorbing hinge design ensures a damaged disk will rupture at or below the marked burst pressure. Manufacturing Design Range 0% standard MDR (Manufacturing Design Range) - The user’s requested burst pressure will be the marked burst pressure. An optional MDR of -5% and -10% may be selected as operating conditions permit. The MDR is applied only to the minus side of the requested burst pressure. MDR is a range of pressures within, which the marked burst pressure must fall to be acceptable for a particular requirement as agreed upon between the rupture disk manufacturer and the user or his agent Example: • Requested burst pressure 100 psig (6.89barg) • Agreed MDR - 10% • Therefore the marked burst pressure shall be between 90 psig (6.21barg) and 100 psig (6.89barg) Gasket cross section for GCR-SMTM and GCR-SMSTM Viton is a trademark of DuPont Dow Elastomers LLC. Tri-Clamp is a registered trademark of Tri Clover Inc. Tef-Steel is a registered trademark of Rubber Fab Molding and Gasket NA Connect is a registered trademark of NovAseptic Equipment AB

Burst Tolerance Marked burst pressure <40 psig (2.76bar) The GCR series disks may also be marked with a minimum / maximum burst pressure or the specified burst pressure and +/performance tolerance to meet the requirements of the CEN standard (pending). Flow Performance The GCR series reverse buckling disk has been specifically developed to produce superior flow performance at all burst pressures in gas or liquid service. The circular score on the disk’s dome, coupled with the non-restrictive hinge on the outlet side of the disk, ensures an excellent pressure relief opening. Flow resistance...