Methods, apparatus, and systems involving wastewater treatment systems are provided. Plastic grids, with first and second legs are provided. These first and second legs have distal ends separated from each other. Flat pipes are also provided for wastewater treatment systems.

The present invention is provided with a water stop device, wherein comprising: a main body, a transmitting element and a sealing element; the main body is disposed with an inlet passage, a diversion passage and a confluence passage in the axial direction in order; the diversion passage is connected to the confluence passage by a normal-open hole; one end of the sealing element is coupled to the transmitting element in transmitting way, such that the sealing element moves between a first position and a second position along the axial direction of the confluence passage; the diversion passage is connected to the confluence passage when the sealing element is situated in the first position; the sealing element closes the confluence passage when the sealing element is situated in the second position. The present invention can occupy small space such to decrease the diameter of the inlet pipe efficiently.

A portable grooming device is detachably coupled to a shower, sink, or bathtub and includes a shower head style, flow-through hair-comb and flexible hose, through which water will travel, making the act of washing, conditioning, and combing one's hair, easier, more enjoyable, more effective, and more convenient. The portable grooming device includes a flexible hose configured to be detachably coupled to an existing water-supply source, and a comb in fluid communication with the flexible hose wherein the comb is detachably mated to the hose. Advantageously, the comb is configured to discharge fluid outwardly and away therefrom.

A fail-safe water saving shower enclosure system includes a showerhead, shower faucet, power adapter, an active infrared sensor, electromagnetic activated fluid valve and shower walls. The infrared sensor installed on one shower wall aims at the opposite shower wall that has the showerhead. The enclosure is electronically partitioned into a restrictive flow zone and free flow zones. When a bather is not present within the restrictive flow zone, the showerhead flows at a free flow rate set at the shower faucet. When the bather does not need water, he simply moves towards the restrictive flow zone. The sensor signals the normally open electromagnetic valve to shut off water from reaching the showerhead. The free flow of water resumes when the bather moves towards the showerhead. The showerhead always receives a full flow of water without the presence of a bather, despite a failure of the disclosed components or power loss.

A controlling mechanism for a three-way valve includes a transmission axis movably received in the valve and having first teeth formed on a free end thereof. A rotation axis is movable and intermittently rotatable in the valve and having second teeth integrally formed on the rotation axis to correspond to the first teeth. A spring is received inside the valve to provide a recoil force to the rotation axis to maintain the second teeth of the rotation axis to be in contact with the first teeth of the transmission axis so that movement of the transmission drives the rotation axis to move and rotate simultaneously for selectively blocking the inlet of the valve.

Certain exemplary embodiments can provide a system that comprises a valve coupled to a water supply to a showerhead. The valve is constructed to turn a water flow on and off to the showerhead. The system comprises a first switch mounted outside of a shower stall. The first switch can be constructed to, responsive to a first user action, cause the valve to turn the water flow on.

The present invention discloses a water discharge structure having a reset function which includes a body internally provided with a water flowing channel, a water outflow end of the body is provided with a first water outflow channel and a second water outflow channel; a button arranged on the body, and a reset spring arranged between the button and the body; a movable element coupled with and fitting the button; and a center shaft coupled with and fitting the movable element, an end of the center shaft is provided with a blocking element, a third spring is provided between an end of the center shaft and the body, and the body is internally provided with a reset device to drive the movable element to reset. A pull-out head includes the above-mentioned water discharge structure having a reset function, and the present invention has the function of memory.

A water control system including a showerhead and a tub faucet. The faucet has a valve configured to automatically restrict fluid flow through the faucet and direct fluid to the showerhead as a function of a parameter, such as a predetermined water temperature. The faucet has many modes of operation, including a Reset Mode, an Auto-Divert Mode, a Bypass Mode, and a Cold Mode. A flow control device generates minimal back-pressure when in the Reset Mode such that water does not undesirably back flow to a shower head.

There is provided a plastic infiltration unit comprising: a top deck which extends in a plane, at least one pillar extending from the top deck for supporting the top deck, wherein the top deck is provided with at least one integrated connector arranged to connect the plastic infiltration unit with another at least one integrated connector, of another plastic infiltration unit in a side by side arrangement.

A handheld shower unit with the water outlet state switched through a key, comprises a water outlet assembly mounted at one end of a housing and provided with water outlet channels, a water inlet pipe communicates with the water outlet channels through a switching valve which comprises a valve body, the key, a transmission swing rod, a sliding rod, a reset spring, a driving disc, a driving shaft, a ratchet wheel, a pawl, and a water distribution pan which is provided with water distribution holes corresponding to different water inlets; the key is pressed which rotates the transmission swing rod, which pushes the sliding rod, which rotates the driving disc so that the pawl hinged to the driving disc can drive the ratchet wheel to rotate, which then drives the driving shaft and the water distribution pan to rotate. Single-hand operation, high switching speed and high reliability can be achieved.