The ISO 9001 certified company Forbes Marshall manufactures TD 120 Thermodynamic Steam Traps. The TD 120 Thermodynamic Steam Traps is a maintainable high pressure thermodynamic steam trap, which can be supplied in 1/2 inch, 3/4 inch and 1 inch sizes with socket weld, butt weld or flanged connections. It has low capacity specifically for mains drainage applications up to 250 barg.