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Expanding Classification
Classifications of Hose Couplings
Hose couplings, also known as
hose adapters
, are used for connecting one end of a hose to another end of a hose. It is also used to connect a hose to a tap. Most hose couplings are used in many simple applications, such as in garden hoses as well as irrigation sprinklers, which are mostly found at home. However, there are several hose couplings which are used in more complicated applications, such as in fire hoses.
So what are the different types of hose couplings used around the world today? And for what applications do these
hose adapters
are used for?
Hose Couplings for Garden Hoses
There are currently two types of hose couplings used for garden hoses. These are the hoselink and the hozelock. A Hoselink is a bayonet type connector utilizing a 0 Ring compression to provide a watertight connection for home and commercial garden hoses, while a Hozelock makes use of a push-fit connector.
Hose Couplings for Fire Hoses
For fire hoses, there are different types of hose couplings used around the world, and each are usually different from each other. These include:
Storz (Germany)
This type of hose coupling involves a "quarter turn coupling", or "sexless coupling", commonly used to connect to fire hydrants, easy to connect, no particular male or female end, lugs are on inside of coupling.
Guillemin Symmetrical Clutch (France and Belgium)
Also known as a DSP, this type of hose coupling involves a "quarter turn" and "sexless" (symmetrical). A ring in each end with two protuberances outside; when the ring turns, the protuberances lock to the hook of the other hose. This type of hose coupling can be fastened by by hand, but it is also possible to use a tricoise wrench.
NST or National Standard Thread and Expansion Ring (USA)
Also known as National Hose thread (NH), this is one of the most common types of hose couplings in the US used for fire hoses. It involves a male and a female straight thread which can be screwed together while the connection is sealed with a gasket.
The Expansion Ring, on the other hand, is commonly used on lay flay fire hose, it has the advantage of providing no flow restriction, as the expansion ring is expanded to match the inner diameter of the hose. These types of hose couplings, however, are installed with special machinery using a drawbar expander.
Hose Couplings for other Uses
Other than garden hoses and fire hoses, there are also a number of
hose adapters
used for different types of applications. These include:
Air King and Ground Joint (Air Hoses)
The Air King is a universal hose coupling used for air hoses. This involves a malleable iron or brass "quarter turn" "sexless coupling" usually found on pneumatic tools like jackhammers.
A Ground Joint, or also known as the "Boss", is a hose coupling is primarily used for compressed air or steam. It consists of a stem, wing nut and spud. It seals as a soft copper seat located in the spud is drawn against the stem by tightening the wing nut.
Cam and Groove (Petroleum)
A Cam and groove is a quick connect fluid transfer hose coupling that consists of a male "adapter" and female "coupler". The "adapter" has a groove on the outside that is engaged by the "cam arms" on the outside of the "coupler" to effect a seal against the gasket inside the "coupler". They are most commonly found in petroleum or chemical applications.For more information visit to our site at http://www.hosekings.com
About the Author
Elbert Lawson is a American entrepreneur and businessman involved in a varied group of companies that include telecommunications, retail, banking and insurance, technology, and auto parts manufacturing businesses. He is also a writter about business deals.
Why are there so many denominations of Christianity? Can't they all just get along?
Christianity has the Roman Catholics, The Eastern Orthodox, the Episcopalians, the Lutherns, the Baptists, the Methodists, the Seventh Day Adventists, the Jehovah Witnesses, the Pentacostals, the Mormons, the Non-Denominationals, etc., etc.
Instead of coming together, Christianity seems to have spread further and further apart over differences in interpretation of Jesus and the Bible. Some of those ideas radically different than the mainstream, if there is a mainstream anymore.
Look at this historical classification scheme and tell me that Christianity is a cohesive faith. http://en.wikipedia.org/wiki/Christian_denomination#Historical_schisms_and_methods_of_classification_scheme
There are so many splinters and those splinters seem to be expanding over time. So, what will Christianity look like in another 100 years?
You forgot the snake handlers.
To me the multitude of Christian Church's means: the people that think they are absolute right, are absolutely wrong. Religion and spiritual belief change over time. 100 years from now, it could look like anything.
SHOULDER SEPARATION /AC JOINT - Everything You Need To Know - Dr. Nabil Ebraheim