Abstract: The present invention improves bug plug technology by providing a rotatable contact head to align contact surfaces in parallel. The parallel alignment avoids pitting of the surfaces by eliminating sparking gaps, improves the surface area-in-contact, and lengthens the useful life of the contact components. The novel features include minimizing heel-toe incursion during contact.

Abstract: The present invention improves bug plug technology by providing a rotatable contact head to align contact surfaces in parallel. The parallel alignment avoids pitting of the surfaces by eliminating sparking gaps, improves the surface area-in-contact, and lengthens the useful life of the contact components. The novel features include minimizing heel-toe incursion during contact.

Abstract: There is disclosed an automatic chemical feed system for retro-fitting to any existing fluid circulating system of the type having an inlet pipe which feeds water to a fluid reservoir and an outlet pipe for feeding fluid to the circulating system, the present system including an inlet pipe adapter for inner connection with the inlet pipe, a fluid diverter connected to the adapter for diverting a portion of the flow, a chemical chamber containing a supply of fluid purification chemicals in solid particulate format, the chamber being in fluid communication with the diverter, and the chamber having an inlet opening for allowing fluid to enter the chamber, and an outlet opening for passing treated fluid out of the chamber back to the fluid reservoir for circulation in the circulating system.

Abstract: There is disclosed an automatic chemical feed system for retro-fitting to any existing fluid circulating system of the type having an inlet pipe which feeds water to a fluid reservoir and an outlet pipe for feeding fluid to the circulating system, the present system including an inlet pipe adapter for inner connection with the inlet pipe, a fluid diverter connected to the adapter for diverting a portion of the flow, a chemical chamber containing a supply of fluid purification chemicals in solid particulate format, the chamber being in fluid communication with the diverter, and the chamber having an inlet opening for allowing fluid to enter the chamber, and an outlet opening for passing treated fluid out of the chamber back to the fluid reservoir for circulation in the circulating system.

Abstract: A water purification system for fluid recirculating systems formed by a container having side walls, a top and bottom wall, and a front wall fixedly secured to the side walls, top wall and bottom wall. The front wall is provided with a plurality of apertures for allowing fluid to seep therein. A container is provided with a solid mass of dissolvable material intended for purification of the fluid which flows through the container.