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A drain cleaner, also known as drain opener, refers to a person, device, or product used to unblock sewer pipes or clear clogged wastewater drains.This term typically applies to chemical, enzymatic, or mechanical tools such as commercial chemical cleaners, plumber’s snakes, drain augers, bio-enzyme solutions, or toilet plungers.
Alkaline drain openers primarily contain sodium hydroxide (lye) and some may contain potassium hydroxide. They may appear in liquid or solid form. Solid formulations of corrosive alkaline drain cleaners are composed of a caustic substance (often sodium hydroxide or potassium hydroxide), aluminum particles, and 'additives.'
PMG manholes in a city street, Perth, Western Australia Manhole being used to access sewer Installation of a fiber-optic manhole in Brooklyn, New York An uncovered manhole in Beirut, Lebanon. A manhole (utility hole, maintenance hole, [1] or sewer hole) is an opening to a confined space such as a shaft, utility vault, or large vessel.
A sanitary manhole under construction. A sanitary manhole (sewer manhole, [1] sanitary sewer manhole [2] or sewer maintenance hole [3]) is a manhole that is used as an access point for maintenance and inspection of an underground sanitary sewer system. Sanitary manholes are sometimes used as vents to prevent the buildup of pressurized sewage ...
Hunters and restaurant workers in the area said they had not noticed the manhole-size opening in the hours before Pollard disappeared, leading rescuers to speculate that the sinkhole was new.
A manhole cover is a removable plate forming the lid over the opening of a manhole, an opening large enough for a person to pass through that is used as an access point for an underground vault or pipe. It is designed to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.
Elizabeth Pollard is thought to have fallen into the abandoned mine through a sinkhole while looking for her cat, rescuers say.
A H-20 highway loading packaged metering manhole during installation. Packaged metering manholes (PMMs) are an outgrowth of the fiberglass manholes developed in the 1960s. . Packaged metering manhole factories integrate a primary device (typically a flume [1] or weir [2]) into a fiberglass ma
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