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Flush tanks or cisterns usually incorporate a mechanism to release water from the tank and an automatic valve to allow the cistern to be refilled automatically. This system is suitable for locations plumbed with 12.7 or 9.5 mm ( 1 ⁄ 2 or 3 ⁄ 8 inch) water pipes which cannot supply water quickly enough to flush the toilet; the tank is needed ...
A cistern (from Middle English cisterne; from Latin cisterna, from cista 'box'; from Ancient Greek κίστη (kístē) 'basket' [1]) is a waterproof receptacle for holding liquids, usually water. Cisterns are often built to catch and store rainwater. [2] To prevent leakage, the interior of the cistern is often lined with hydraulic plaster. [3]
A suction caisson can effectively be described as an inverted bucket that is embedded in the marine sediment.Attachment to the sea bed is achieved either through pushing or by creating a negative pressure inside the caisson skirt by pumping water out of the caisson; both of these techniques have the effect of securing the caisson into the sea bed.
A dual flush toilet; note the two buttons at the top of the cistern. A dual flush toilet is a variation of the flush toilet that uses two buttons or a handle mechanism to flush different amounts of water. The purpose of this mechanism is to reduce the volume of water used to flush different types of waste.
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A low-flush toilet (or low-flow toilet or high-efficiency toilet) is a flush toilet that uses significantly less water than traditional high-flow toilets. Before the early 1990s in the United States, standard flush toilets typically required at least 3.5 gallons (13.2 litres) per flush and they used float valves that often leaked, increasing their total water use.
The group of cisterns forms a rectangular space measuring 127 m (417 ft) x 102 m (335 ft) (12,945 m 2 (139,340 sq ft)). Each cistern is composed of a vaulted space, 102 m (335 ft) long, 7.4 m (24 ft) wide and 7 m (23 ft) high (excluding the vault), with a total capacity of 60,000 m 3 (2,100,000 cu ft). There are fifteen individual cisterns ...
A portable water tank is usually set up near or front of an attack engine, [1] or possibly next to a supply engine. [2] This enables tenders to quickly drop off their load of water and return to the fill site as soon as possible. They are designed to be set up in around a half-minute with two firefighters.