What is a Steam Trap?
A steam trap is an automatic valve that holds the steam at the load until it gives up its heat energy and condenses to water (condensate). After the steam condenses to water, the steam trap allows only the condensate to pass, thereby contributing to plant efficiency.
Thermodynamic Steam Trap:
The thermodynamic trap is an extremely robust steam trap with a simple mode of operation. The trap operates by means of the dynamic effect of flash steam as it passes through the trap. The only moving part is the disc above the flat face inside the control chamber or cap.
On start-up, incoming pressure raises the disc, and cool condensate plus air is immediately discharged from the inner ring, under the disc, and out through three peripheral outlets.
Hot condensate flowing through the inlet passage into the chamber under the disc drops in pressure and releases flash steam moving at high velocity. This high velocity creates a low pressure area under the disc, drawing it towards its seat.
At the same time, the flash steam pressure builds up inside the chamber above the disc, forcing it down against the incoming condensate until it seats on the inner and outer rings. At this point, the flash steam is trapped in the upper chamber, and the pressure above the disc equals the pressure being applied to the underside of the disc from the inner ring. However, the top of the disc is subject to a greater force than the underside, as it has a greater surface area.
Eventually the trapped pressure in the upper chamber falls as the flash steam condenses. The disc is raised by the now higher condensate pressure and the cycle repeats.







Superb little unit! The Bronze Thermodynamic Steam Trap is easy to fit, compact, and leak-free. It performs exactly as specified — quick condensate removal and no steam wastage. Highly recommended for long-term reliability.
Solid bronze body and good thermal response. The thermodynamic disc seats perfectly and works consistently under cycling conditions. We’re impressed with its reliability — ideal for automatic condensate discharge.
The quality of this steam trap is excellent. It discharges condensate efficiently without steam loss, and the response time is very fast. Bronze construction gives it strength and reliability. Great for small and medium-capacity boilers.
Very well-made product. The bronze body is corrosion-resistant and performs smoothly even under fluctuating loads. Easy to install with standard threads, and no issues of waterlogging or trap failure so far.
Excellent steam trap performance! The Bronze Thermodynamic Steam Trap (Screwed End) is compact, efficient, and highly responsive to condensate discharge. We’ve been using it on low- and medium-pressure lines — zero leakage and very stable operation.