Abstract: A transition coupling assembly for use in the construction of a concrete floor containing vertical pipe stubs. A transition coupling body is used to cap a vertical pipe during the pouring of the slab. After the concrete floor is finished, a thin layer of concrete may be removed from above the cover and then the cover is removed to reveal an opening leading to the second end of the coupling. A second pipe may be connected to a second socket in the transition coupling to form a vertical pipe stub to provide a waste pipe for a toilet, sink, or other plumbing fixture.

Abstract: A grease or oil separator system that includes a grease interceptor body with a variable flow control assembly. The grease interceptor system is a large tank with an inlet for wastewater and a downstream outlet for passing the wastewater minus separated grease and oil into a sewer system. Inside the tank, the grease floats to the top so that it can be removed through an opening in the top wall that provides an access port for clean out. The pickup for the outlet is located toward the bottom of the tank near the bottom wall so that only water separated from the grease flows into the sewer system. The variable flow control assembly varies the size of an opening in a conduit inside the interceptor body. Varying the size of the opening controls the flow from the inlet into the tank.

Abstract: A grease or oil separator system that includes a grease interceptor body with a variable flow control assembly. The grease interceptor system is a large tank with an inlet for wastewater and a downstream outlet for passing the wastewater minus separated grease and oil into a sewer system. Inside the tank, the grease floats to the top so that it can be removed through an opening in the top wall that provides an access port for clean out. The pickup for the outlet is located toward the bottom of the tank near the bottom wall so that only water separated from the grease flows into the sewer system. The variable flow control assembly varies the size of an opening in a conduit inside the interceptor body. Varying the size of the opening controls the flow from the inlet into the tank.

Abstract: An adjustable drain assembly for adjusting the level and pitch of the frame so that, after installation, the frame can be adjust so that the strainer is level or flush with the finished floor surface. A retrofit kit for combining with a preexisting head already installed in a floor to provide an adjustable drain assembly is also disclosed.

Abstract: An adjustable drain assembly for adjusting the level and pitch of the frame so that, after installation, the frame can be adjust so that the strainer is level or flush with the finished floor surface. A retrofit kit for combining with a preexisting head already installed in a floor to provide an adjustable drain assembly is also disclosed.

Abstract: A water hammer arrestor having an insert molded plastic body with a metal attachment at one end to install to the supply line. A piston disposed inside the bore of the plastic body includes a flexible skirt that faces the water supply. The skirt includes a sharp edge that provides a scraping/cleaning action.

Abstract: A trap seal primer distribution unit capable of providing charges of water to two, three, or four sewer trap lines depending on the initial setting of the unit. The distribution unit comprises two main components. A lid for splitting the water from the trap seal primer valve removably attaches to a distribution body such that rotation of the lid into three alternate positions enables the distribution unit to alternately serve two, three, or four sewer trap lines.

Abstract: A trap seal primer valve for automatically charging water into a sewer line trap from a water line containing water under variable pressure.

Abstract: A trap seal primer distribution unit capable of providing charges of water to two, three, or four sewer trap lines depending on the initial setting of the unit. The distribution unit comprises two main components. A lid for splitting the water from the trap seal primer valve removably attaches to a distribution body such that rotation of the lid into three alternate positions enables the distribution unit to alternately serve two, three, or four sewer trap lines.