This steam trap element movement allows you to dispose of non-condensable and condensed gases, making it ideal for draining a large amount of condensate. In most installations, the water hammer in the condensate return lines is caused by the formation and implosion of steam bags. Often the cause is an increase in the discharge line of a trap or a high pressure drop that is discharged into a wet return pipe at low temperature. Boilers are classified based on working pressure, fuel used, building materials, draft, shape and configuration, and whether they are condensers or non-condensed. Salary pressure is the reading pressure of a pressure gauge, which is relative to the local atmospheric pressure.

Absolute pressure is the gage pressure plus atmospheric pressure (usually believed to be 14.7 psy). Referring to the saturated steam table on page 28, we see that a low-pressure boiler operating at 15 psig produces saturated steam at a temperature of 250 ° F When it comes to steam distribution systems, it is important to check for possible failures in steam traps, valves and pipes and for leaks in the system.

As the name implies, single pipe systems provide steam and recover condensed water through the same tube; while two-pipe systems have a separate tube for each function. Two pipes are mandatory for hot water systems, making the upgrade more complex if the existing steam installation uses only one per radiator. Sometimes even two-pipe systems require return lines to be updated; If designed for a small flow of condensation water, they may not be able to handle the full flow of a hot water system. This condition can also occur in the discharge line of the boiler supply pump from a vent or preheating unit.

However, steam boilers and radiators are often inefficient due to their age and design, and converting to hot water can provide significant energy savings. In addition to being more efficient, hot water systems also offer faster response time than steam radiators, while reducing maintenance costs and providing safer operation. An elevator on the return line after the fall will cause a water hammer because the temperature of the condensate leaving the trap is higher than 100 ° C (212 ° F). While pushing vapor bubbles into the return pipe in a colder condensate, they implode and cause a water hammer. The water hammer will normally be worse during start-up due to the cold condensate on the return line.

Finally, the loss of water from the boiler can sound the alarm at a low water level. In some cases, this water loss can be so rapid that the boiler is turned off when producing a low water alarm. An important advantage of using steam as a means of heat transfer is the large amount of heat released during condensation in water.