Apollo Command Module (Block I) environmental control system valve shutoff, measuring 2.75″ x 2.75″ x 1.5″, with an Airesearch label on the body: "Valve Shutoff, No. 828740-2-1, Order NAS 9-150." Designed to be manually controlled by a T-handle tool, this shutoff would have been installed in the Apollo Block I CSM Left Hand Equipment Bay (LHEB) Panel 207. In fine condition.
