Tube Plug consists of a tapered spindle & sleeve, which expands when tightened to ensure a close metal-to-metal fit with the tube wall. Each tube plug is packaged with full instructions. Tube plug for a heat exchanger tube employs a housing, which include a conical bore with a blind threaded cylindrical bore. The tube plug comprises a one piece mechanical plug with one open end and one closed end, which is capable of being inserted in a heat exchange tube and internally expanded into contact with the inside surface of the heat exchange tube for preventing flow of a coolant through the heat exchange tube. The tube plug comprises a groove extending around the outside circumference, which has an elastomeric material disposed in the groove for enhancing the seal between the tube plug and the tube.

Tube Plugs are used in feed water heaters, moisture separator reheaters, preheaters, condensers, coolers, finfan coolers and tubed heat exchanger. It is a solid thimble style plug that can be inserted into a leaking tube and expanded with a standard 3/8″ drive torque wrench. These are used in low-pressure condensers and heat exchangers.

A tube printer is used for printing information on an interior surface of a tube. The tube printer includes housing, an ink wheel assembly and a print wheel. The housing having at least two side members interconnected by a top plate extending there between and including spring biased guide wheels that cooperatively center the housing within the tube. An operating handle is operatively attached to an end of the housing to provide a means to push and pull the tube printer within the tube. The ink wheel assembly is operatively positioned between the side members of the housing and the print wheel is operatively positioned between the side members of the housing and adjacent the ink wheel and includes a raised surface containing the information to be printed on the interior surface of the tube.