Abstract: A monitor for an effluent disposal system for preventing suspended solids in an effluent from clogging a disposal field. A separate monitor housing having an inlet and an outlet is installed in the piping interconnecting a septic tank to a disposal field. A screening system in the housing screens out suspended solids. As the solids accumulate on the screening system over a period of time, the fluid level raises, actuating a float operated switch connected to means to signal that the system needs servicing. An additional float operated switch can be provided for indicating saturation of the disposal field.

Abstract: An apparatus for separating a mixture of liquids of different specific gravities, e.g. oil and water, comprising a vessel containing a settling chamber, an upper chamber and a movable partition between said chambers for controlling the process, conduits for the supply of mixture and the separate discharges of the component liquids and a second vessel containing a collecting chamber and a final liquids separating device and associated therewith conduits for the component liquids.

Abstract: An apparatus to separate a mixture of liquids of different specific gravities, e.g. oil and water, in which in a settling vessel for liquids the buoyancy of the lighter liquid (oil) is used to move a diaphragm upwards to control the discharge of lighter liquid from said vessel and means are provided to check temporarily or to slow down the downward movement of said diaphragm during said discharge.

Abstract: An apparatus separates grease from a waste effluent containing a grease and water mixture prior to disposing of the effluent in a sanitary sewage system. A separator tank receives and holds the effluent while the mixture separates into an upper grease fraction and a lower water fraction. A means is provided for introducing the effluent into the tank either periodically or directly from the source of the effluent. A withdrawal means is associated with the tank for withdrawing at least a portion of the water fraction from the tank means when the effluent in the tank means reaches a first predetermined level. The withdrawal means stop withdrawing the water fraction from the separator tank when the effluent in the tank reaches a second predetermined level lower than the first predetermined level. The grease can be stored in th separator tank itself or can be transferred to a separate storage tank.

Abstract: A grease separating system includes four successive chambers. The heated, emulsified grease is passed through a solids retention box into an inlet chamber where cool water is sprayed onto the emulsified grease. This mixture is passed through a connecting chamber, and then over baffles at the entrance of a collection chamber. The grease having been separated from its emulsified state rises to the top of the mixture in the collection chamber, and the water passes into a discharge chamber and in to the connected sewer system. After successive operations, the floated grease is sensed when it reaches a predetermined level, and an alarm is sounded to indicate that the accumulated grease should be removed.

Abstract: A cartridge filter unit particularly adapted for use in a swimming pool water purification system because of its modular design, includes a readily accessible filter body. By removing a cover, a core assembly including a solids entrapping device and an inexpensive, disposable filter cartridge contained therein may be easily withdrawn for cleaning or replacement without allowing solid pollutants collected by the filter to re-enter the system.

Abstract: An in-line filter unit is provided for use in a circulating fluid system. Such a unit is made essentially into one piece to insure watertight. A debris reservoir is provided to store the debris removed from the fluid. A diffuser is placed in the line of fluid flow for preventing direct contact by the fluid entering the unit with the filter and for preventing damage to the filter.

Abstract: A modular filter assembly for cleaning and polishing of potable waters including a fabric turbidity removal module and an adsorptive taste and odor removal module. The modules are connected in series so as to have turbidity removal prior to taste and odor removal to extend the operating life of the taste and odor removal module. The turbidity removal module includes a porous, fabric material assembly which is of a rolled or wrapped construction which provides a large filtration area to prevent its clogging prior to the utilization of the adsorptive capabilities of the taste and odor removal module. The turbidity removal module includes a flow grid assembly having inner and outer flow grid to maximize the distribution of the fluid being filtered over the filtration area of the module and to assure lateral flow of the filtered fluid through the module.