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How did street' originate in the plumbing term street ell?

A "street ell" may have gotten it's name because it describes a 90˚ fitting particularly useful in tight, street ditches. When installing water pipes under a street, or from a water service, again under the street, into a home or business, this street ell allows one to change pipe direction with one less fitting, and in less space, than with a standard ell. A "street ell" may have gotten it's name because it describes a 90˚ fitting particularly useful in tight, street ditches. When installing water pipes under a street, or from a water service, again under the street, into a home or business, this street ell allows one to change pipe direction with one less fitting, and in less space, than with a standard ell.


Can copper dwv attach to a cast iron drain system without a dielectric union?

yes. A no-hub coupling or FERNCO (brand name) coupling work well.


Which one of the following is the name of the point at which an expansion vessel connects to a central heating system?

The point at which an expansion vessel connects to a central heating system is called the "expansion vessel connection" or "expansion tank connection." This connection allows the expansion vessel to accommodate the thermal expansion of water in the system, maintaining pressure and preventing damage. Proper installation at this point is crucial for the efficient operation of the heating system.


What is service mains in power transmission system?

A 'service mains' is not associated with an electricity 'transmission' system, but with a low-voltage 'distribution' system. The service mains is the name given to the cable that connects a building to the low-voltage mains supply.


What is the name for the peace of skin betwene the tumb and the pointer finger?

The piece of skin between the thumb and the pointer finger is called the "webbing" or "interdigital membrane." This area is more pronounced in some animals, like certain birds and reptiles, but in humans, it is a small fold of skin that connects the two digits. It aids in grip and dexterity.