Thermodynamic Steam Traps. TD42L and TD42H. TD42L designed for relatively small condensate loads and ideal for mains drainage applications. TD42H is ideal for process type loads Screwed BSP with in-built strainer Compact and lightweight, reducing installation costs Positive discharge with clean tight shut-off. No back-up of condensate ensures maximum plant efficiency Robust construction to guarantee long life against superheat, water-hammer, freezing and vibration Can be installed in both horizontal and vertical positions reducing installation problems