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Reverse flushing can be done automatically: the backwash is done by hydraulic valve opening and hydraulic cylinder pistons, which are controlled by the backwash controller. The anti-flushing controller can accurately control the hydraulic valve and hydraulic cylinder according to the differential pressure value from the filter inlet and outlet, and the power of the controller comes from the pressure of the line itself.
Glasses, also known as eyeglasses or spectacles, are devices consisting of glass or hard plastic lenses mounted in a frame that holds them in front of a person's eyes, typically using a bridge over the nose and arms which rest over the ears. Glasses are typically used for vision correction, such as with reading glasses and glasses used for nearsightedness. Safety glasses provide eye protection against flying debris for construction workers or lab technicians; these glasses may have protection for the sides of the eyes as well as in the lenses. Some types of safety glasses are used to protect against visible and near-visible light or radiation. Glasses are worn for eye protection in some sports, such as squash. Glasses wearers may use a strap to prevent the glasses from falling off during movement or sports. Wearers of glasses that are used only part of the time may have the glasses attached to a cord that goes around their neck, to prevent the loss of the glasses.
Audi, a German company that makes cars and motorcycles, dates back to the 19th century. Initially located in Saxony four car companies - zwickau city (zwickau) audi (audi) and horch (horch) motors, chemnitz - sigma city (chemnitz - siegmar) rover auto company (wanderer) and DKW zschopau city car companies, for the progress of the German car industry has made outstanding contributions.
The backboard carries a 1.5 inch steel H frame which provides for extra stability while playing for the hoop. There are nylon bushings at intervals of connection point about the backboard, and contains strength increasing ? inch thick steel plate for rim mounting. The Goalsetter Contender features a 4 inch square post, a 1 piece structural post, as well as a steel construction post. It has die formed extension arms, it's wide grip one piece extension arm which extension arms effective counter backboard shaking. The pole itself may be adjusted from 6 feet to 10 feet, and there is a 2.5 foot extension from post to backboard.
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