For process steam trapping applications the single orifice float steam trap is the right choice as it ensures effective condensate evacuation and lower steam consumption.
In process equipment applications, the steam space is designed to ensure most of the steam that enters gives off its heat to the process and condenses. As a result the condensate load in process equipment is pretty high as compared to main line steam trapping. In such applications it is necessary to evacuate the condensate as soon as it is formed because any logging of condensate in the steam space will, in a manner of speaking, reduce the steam space available thereby hampering the heat transfer rate and increasing the process time.
Thus the ideal process steam trap is one that operates continuously to evacuate the condensate to ensure highest heat transfer rates to the process. For the above reasons a single orifice float trap is the right fit for process steam trap applications.
A ball float steam trap works on the buoyancy principle and is designed to open the trap mechanism when condensate collects thereby ensuring continuous condensate removal. Single Orifice float trap is also suited to variable load characteristics and operates satisfactorily, unaffected by load consumption pattern being high or medium or low. Thus a rightly selected ball float trap does not require to be bypassed during startup. Additionally because of its method of operation, as compared to an inverted bucket steam trap, a ball float trap typically delivers 10%-12% lower steam consumption at the equipment level.