Expansion tanks (also sometimes called compression tanks) are installed in hydronic (hot-water) space heating systems to limit increases in pressure to the allowable working pressure…
Category: Steam and Hydronic Line
A boiler return trap (or alternating receiver) is a device used in some vapor-steam heating systems to return condensation to the boiler under varying pressure…
A lifting trap (see Figure 10-37) is an adaptation of the upright bucket trap and is available for pressures ranging from vacuum to 150 psig.…
The operation of a tilting trap (see Figure 10-36) is intermittent in nature. With this type of trap, condensation enters a bowl and rises until…
An impulse trap (see Figure 10-35) operates with a moving valve actuated by a control cylinder. When the trap is handling condensation, the pressure required…
A flash trap (see Figure 10-34) is used to drain condensation from steam lines; steam, water, and oil heaters; unit heaters; and other equipment in…
Bucket traps are either of the upright or inverted design and are used in both low- and high-pressure steam heating systems. Both types of bucket…
A thermodynamic steam trap (see Figures 10-26 and 10-27) contains only one moving part, a hardened stainless-steel disc that functions as a valve. Because of…
A float and thermostatic trap (see Figure 10-23) has both a thermostatic element to release air and a float element to release the condensation. As…
As shown in Figure 10-21, the principal parts of a balanced-pressure thermostatic trap consist of a flexible bellows, a valve head, and a valve seat.…