Armstrong CD-42 is a disc-style steam trap in the CD-40/CD-60 series, engineered to automatically drain condensate from steam systems while minimizing live-steam loss. A key feature is a replaceable capsule that lets maintenance teams renew performance by swapping only the capsule rather than the entire trap. The CD-40/CD-60 family is offered in multiple connection sizes—3/8", 1/2", 3/4" and 1" variants—with CD-41, CD-42, and CD-43 representing those options, and the lineup is rated for service up to 600 psi. Typical applications include condensate drainage on steam mains, heat exchangers, and steam tracing where reliable condensate removal is essential.
