The present disclosure describes a an integrated tree watering and support system. In particular, the disclosed tree watering system can include a fill tube and a configuration of water storage units. The system can better promote hydration and aeration of tree roots, allow for versatile watering conditions, and provide stability and support to the tree. The fill tube can receive rainwater, hose water, or even water from alternative irrigation systems and can cater to varying environmental conditions. The water storage unit can deliver water and air directly to the root ball of the tree, enabling increased root health and growth. Moreover, by placing the root ball of the tree on top of the water storage unit, stability and support are provided to the tree, which can prevent subsidence and enhance overall tree stability.

A drainage pipe fitting includes a cuff that permits the fitting to be coupled with pipes or fittings of various sizes. The cuff includes a plurality of sloped surfaces. For example, the cuff may include a first set of sloped surfaces and a second set of sloped surfaces on an interior of the cuff for receiving different-sized pipes or fittings on the interior of the cuff. The cuff may also include a third set of sloped surfaces, a fourth set of sloped surfaces, and a fifth set of sloped surfaces on an exterior of the cuff for receiving further pipes or fittings of different sizes on the exterior of the cuff. If desired, the cuff can include more or less sets of sloped surfaces. In some cases the sloped surfaces are arranged on internal and external fins of the cuff.

A grate (111)-covered gutter (110) of a paved part of the earth's surface (100) is temporarily closed off by means of a closing organ (130), the gutter (110) being connected to a sewage pipe (120). Thus, the draining away of contaminating liquid can be prevented. The closing organ (130) includes a valve (131 fitted rotatably in the gutter (110). The valve (131) can be in a first stable position wherein the valve (131) seals. The valve can also be in a second stable position in which the valve (131) releases the gutter (110) for the discharge of liquid (rainwater) to the sewage pipe.

A flexible check valve for fluid-handling systems that prevents reverse flow but allows downstream flow of fluid comprises a dome that fits within a pipe and includes a concave surface. The flexible check valve further includes a flexible seat that fits within the pipe and includes a. convex surface. The flexible seat is deformable from a closed position, that prevents reverse flow, to an open position, that allows downstream flow, when an upstream pressure acts on the flexible seat and exceeds a downstream pressure and when, in the closed position, the concave surface of the dome is oriented downstream and the convex surface of the flexible seat is oriented upstream. A housing is connected to the dome and the flexible seat and is connectable to the pipe. A seal is formed between the concave surface and the convex surface when the flexible check valve is in the closed position.

A modular plug for installation into large diameter pipelines that provides a reliable and secure seal within the pipeline to be serviced thereby increasing the safety of the people working on the secured side of the plug. The plug is modular in construction and suited for easy installation within large pipelines. The plug is generally formed as a large circular plate formed from modular sections. Along the division lines the plug pieces include grooves and a gasket therein. Reinforcing jacks extend outwardly from the plug and exert pressure against the pipeline to retain the plug geometry and position. Also, around the periphery of the plug is shown an inflatable rubber seal.

A dual action retractable screen includes a first screen portion with a first screen portion perforated surface connected to the hinge mount via a horizontal hinge, which allows the first screen portion to rotate within a substantially horizontal plane. The screen also has a second screen portion with a second screen portion perforated surface and a latch pin. A vertical hinge connects the first screen portion to the second screen portion and allows the second screen portion to rotate within a substantially vertical plane. The screen also includes a latch mount that connects to the curb inlet and has a latch saddle that receives the latch pin. The screen operates in two modes: (1) a closed mode where the latch pin is disposed of in the latch saddle, inhibiting rotation about the horizontal hinge; and (2) an open mode where the latch pin is dislodged from the latch saddle, permitting rotation about the horizontal hinge and about the vertical hinge.

Protective drain covers are disclosed, including stiffening members at one end or at opposing ends to increase rigidity in one direction while leaving the other direction flexible. The increase rigidity in the one direction improves the ability to handle and accurately position the protective drain cover for use, while the flexibility in the other direction allows the protective drain cover to be rolled up for storage and future use. The stiffening member(s) can be used as hand-holds to assist in the placement of the heavy protective drain cover and then removal of protective drain cover after use.

A drain assembly comprises a shroud, a shank, and a frame. The drain assembly may further comprise a shim with an angled top surface. The frame may have an angled bottom surface. A rotational orientation of the angled top surface of the shim relative to the shank and a rotational orientation of the angled bottom surface of the frame relative to the shank may be independently adjustable, thereby allowing for the top surface of the frame to be both angularly and rotationally adjusted relative to a central axis of the drain assembly independent of the positional height of the shank. The drain assembly may further comprise a cover having bendable tabs. The bendable tabs may be disposed around a periphery of the cover and may be configured to contact an angled inner surface of an upper bowl of the shroud, such that the bendable tabs bend around the frame, thereby locking the cover onto the frame.

The present invention relates to a curb, grate, and combination curb and grate inlet temporary filtering system to filter silt, sedimentation and debris from runoff entering a storm water drainage system. The invention comprises a body sized to fit over the inlet and includes one or more support members encapsulated with a filter material that assists in the filtering of water entering the storm sewer inlet.

A mechanical closure device comprises an enclosure having four sides, a top and bottom and defining a discharge opening at the bottom. A floodgate assembly is interiorly removably mounted to the enclosure and comprises a pair of doors pivoted on a hinge assembly between an opened position and closed position. In the closed position, the doors seal against the flange to prevent passage of water through the discharge opening. A discharge drain assembly is preferably disposed on one door and has an opened and a closed position. An appendage is provided to facilitate opening and of the door. Upon removal, the floodgate assembly is stably positionable on a multipositionable service rack. A multipurpose tool is employed unlatching the floodgate doors and slidably removing the floodgate assembly.