Armstrong International CD33L PMO Disc Steam Trap

Armstrong CD33L PMO Disc Steam Trap is a low-capacity, disc-type steam trap designed for constant‑pressure systems, specifically in large steam mains, process equipment, and HVAC heating lines. This 3/4" NPT model features a stainless-steel body, a maximum operating pressure of 600 psig (41 bar), and a maximum vessel design pressure of 915 psig (63 bar), with a minimum operating pressure of 3.5 psig (0.24 bar) and a maximum temperature of 486°F (252°C). As part of the CD-33 family of controlled‑disc traps, it provides a controlled cycle rate to improve efficiency and reduce wear, and is suited for low-flow applications such as steam main drips and steam tracing lines where back pressure stays below 80% of inlet pressure.