Thursday, 09 September 2010
Weco unions13/06/2008 | Administrator

Weco Unions Weco Unions also referred to as Wing Unions are pipe connectors often used in offshore industry.   They are available in threaded or butt-welded ends for pressures up to 20,000 p [ ... ]


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Valves

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Butterfly Valves - Overview
07/06/2008 | Administrator

Butterfly Valves A Butterfly valve is an on-off valve or a shut-off valve. Butterfly valves are quarter turn valves with a straight through flow configuration. For large sizes butterfly valves offer  [ ... ]


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Materials

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Nickel piping
08/06/2008 | Administrator

Nickel Piping Nickel is highly resistant to various reducing chemicals and is unexcelled in resistance to caustic alkalies. Nickel 200 (UNS N02200/W.Nr. 2.4060 & 2.4066) is commercially pure (99 [ ... ]


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Specials

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Strainers
09/06/2008 | Administrator

Strainers - An Overview A strainer is a device used to mechanically remove solids from flowing fluid by utilizing a perforated plate or mesh.  Strainers are installed upstream of pumps, compress [ ... ]


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Stress

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Stress Critical Lines
07/06/2008 | Administrator

Stress Critical lines Flexibility as defined in the design codes is a measure of the ability of a piping system to absorb its own expansion and that of connected equipment to ensure that the loadings [ ... ]


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Backflow Preventer PDF Print E-mail
Written by Administrator   
Thursday, 05 June 2008 09:28

Backflow Prevention Assembly

Backflow is the reversal of flow of nonpotable water or other substances through a cross-connection and into the piping of a public water system or consumer's potable water system. A cross-connection is a connection between a potable water system and any system containing nonpotable water.

There are two types of backflow - back pressure and back siphonage.

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Last Updated ( Saturday, 03 January 2009 22:22 )