How much of a differential pressure does a typical thermodynamic steam trap need to discharge condensate? i.e. Say one needs to drain condensate from a shell under vacuum 310 mmHg abs, would a thermodynamic steam trap work correctly if I connected the discharge pipe to a vessel maintained at 210 mmHg abs i.e. A differential pressure of 100 mmHg i.e. 0.13 bar. This is a small 1/2" trap & the expected condensate isn't much. Approx. 100 to 250 Litres / hour. The discharge piping is very short (say 6 feet long) since the vessel is very close to the trap. An image of the trap type just for context.