Abstract: A guillotine-type valve in which the plate thereof is sealed around all edges relative to the housing in which it operates, said seals being pressure assisted. Adjacent the periphery of the plate, including its upper and lower edges, are curved, flexible strips of sealing material which contact the opposite face surfaces of the plate near the edges to form the seal. Surrounding such seals is a chamber and means is provided to maintain such chamber under pressure greater than the pressure of the fluid being controlled by the valve.

Abstract: An electronic remote reading system for a meter is disclosed, consisting of a permanent magnet on a shaft, rotating in proportion to volume passing through the meter. A switch, sensitive to a magnetic field, mounted on the outside of the meter in the influence of the magnetic field, a low current consumption circuit connecting the switch to a remotely located counter, powered by an energy source, such as alkaline batteries or a solar panel. The circuit is connected in such a manner that the power consumed is of such a small magnitude that the alkaline batteries have a life essentially equal to their shelf life. The solar panel is of a physical size to be mounted directly as part of the counter housing.

Abstract: A sludge heat treat system wherein a tube in the tube heat exchanger consists of multiple set of small tubes spaced inside of larger tubes. At the end of each run there is a return bend that conveys the fluid on the inner tube around to the next tube in the tube exchanger and also conveys the outer tube fluid to the next tube system. The inner tube system is carrying sludges that are obtained in a sewage treatment plant or an industrial waste treatment plant or any other type of treatment plant where sludges are produced and it is desired to heat treat these in order to release the bound waters and thereby effect a dewatering of the sludge cake which is not possible without sludge heat treat systems. The outer tube conveys a liquid which is usually water which has been treated. The outer tube conveys a liquid which is usually treated water which gives up the heat from an outside source to the sludge on the inner tube in a consistent manner.