The three-piece booster pump illustrated in Figures 10-11 and 10-12 is an example of the circulators used in small-to medium-size residential and light commercial hydronic…
Month: January 2011
Hydronic heating systems use small compact pumps to provide the motive force to circulate the water in the pipes. They are usually referred to as…
Vacuum heating pumps are used to maintain the vacuum in mechanical vacuum heating systems by removing air, vapor, and condensation from the lines. Many vacuum…
The design of a conventional gravity-flow steam heating system is such that the heat-emitting units cannot be placed at a level lower than the water…
Heating and circulating pumps are used to maintain the desired flow rate of steam or hot water in a heating system. The two types of…
The procedure for making a socket weld is as follows: 1. Cut the pipe end square, making sure the diameter is not undersize or out…
The procedure for making a butt weld is as follows: 1. Machine the pipe ends for the butt-welding joint. 2. Clean the pipe ends, valve…
The basic procedure for soldering or silver-brazing pipe or tubing to valves is as follows: 1. Cut the tube or pipe end square, and make…
Unless valves are installed properly, they will not operate efficiently and can cause problems in the system. There are certain precautions you should take when…
Sometimes the threads on valve stems become worn or damaged, making the valves inoperable. When this occurs, the stems must be replaced. Before the stem…