BS&B Safety Systems HB-0-0001-004 A6004619-1 CSR-7RS

BS&B Safety Systems CSR-7RS Safety Head, associated with CSI Sure-Saf rupture disk systems, is a pre-torqued, fail-safe holder designed to install between companion flanges and clamp a rupture disk with pre-torqued capscrews for easy removal and reinstallation independent of flange bolts. A J-bolt and asymmetric alignment pins ensure correct orientation and centering of the disk, while flow arrows on the head indicate the proper process direction. The seating surface features a proprietary bite seal that achieves leak-tight performance down to 10^-6 cc/s He or greater, and the CSR-7RS is also offered in a torque-resistant variant (CSR-7RS-TR); typical configurations list nominal sizes 1 and 25 with a 300/600 flange rating and a face-to-face dimension of 1.50 in (38 mm). This head is used in rupture-disk safety assemblies to provide reliable containment and rapid venting in chemical, petrochemical, pharmaceutical, energy, and other process industries, aligning with BS&B’s Sure-Saf system architecture and the product family identifiers HB-0-0001-004 and A6004619-1.