China API check valves supply to Abu Dhabi project

Fluid control specialist Dynamic Fluid Control (DFC) has completed the manufacture of China API valves, China API cast steel check valves, China API stainless steel check valves, China API alloy steel check valves, China API cast steel industrial valves, and China API forged steel check valves, worth over $1-million, supply for seawater pipelines associated with Borouge 2, the world’s largest cast steel plant under construction in Abu Dhabi.
The supply china API cast steel check valves, Size ranges from 1/2 inch to 36 inch, Pressure range from 150LB to 2500LB, have been delivered to site for installation.
DFC was awarded the contract because of its ability to design china API cast steel check valves to corrosion-resistant specification, and to execute manufacture check valve to stringent quality standards of API602, BS1868.
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The Borouge design was based on YC valve standard API check valves for dirty water, which is able to manage suspended solids and, in this case, sea sand.
Borouge 2 is an expansion of the original Borouge plant at Ruwais, Abu Dhabi, commissioned in 2001 as a joint venture between oil company Abu Dhabi National Oil Company and Central European olefins producer Borealis.
Work on the expansion project began in December 2007. When completed in 2010, the expansion valve supply project will triple the existing yearly capacity to about two-million tons of polyolefins.
Of the biggest Borouge 2 contracts awarded so far one has been to Italian polypropylene plant engineering design and construction company Technimont. The contract will oversee the establishment of three new Borstar technology polyolefins units, materials handing facilities, labora- tory facilities and a marine unit.
A second contract has been awarded to Spanish general contractor Tecnicas Reunidas for the check valve supply construction of utilities and offsites.
The consulting engineering company for the utilities and offsites contract, a British company, chose South African-designed and manufactured YC valves for API check valve relief duties in the large-diameter pipelines of the utilities’ seawater cooling system.
These comprise two 2 100-mm glass reinforced cast steel check valve lines supplying headers in the closed-circuit cooling water unit, and four 1 600-mm polyethylene discharge lines. The pipelines require special API check valves with high volume air intake and discharge capabilities.
Total seawater flow within the system will be about 101 200 m3/h.
Against competition from supply check valves worldwide, the YC valves were considered to exhibit the most favourable flow characteristics for the application of valve supply, the company reported.
DFC faced several challenges during supply of check valves, such as the selection of the correct materials for application in seawater, which entailed a chloride concentration of 34 000 parts per million.
Working closely with the consulting engineers, DFC designed a YC product supply from carbon steel  check valve equivalent to standard API600, or API6D, with a pitting resistance number exceeding 40 and with stainless steel 400 trim.
In addition to carefully selected construction materials, the API check valve bodies also needed precise fabrication to avoid any residual collection of suspended solids that could cause crevice corrosion.
Fabricating machine times were substantially longer than normal because of steel hardness some 3,5 times that of the more generally used 316L stainless steel.
A third challenge arose from the proxi- mity of the installation area to the desert. To counter the ingress of sand into the API valves and pipelines, a special gooseneck discharge pipe was designed using two 90° elbows.