The Armstrong CD-33L is a low-capacity, disc-style steam trap in the CD-33 series, designed for steam main drips and steam tracing lines where capacity is limited. It features a three-discharge-port design with a hardened seat and disc, is freeze resistant, and uses a stainless steel ASTM A743 CA40 body for durability. The unit is offered with screwed connections including 3/8 in NPT (also available in 1/2", 3/4", and 1" sizes), and is rated for up to 600 psig operating pressure and temperatures up to 752°F, with capacities to 2,500 lb/hr and a maximum allowable pressure of 915 psig at 752°F.
