TUNGSTEN CARBIDE BALL VALVE COMPONENTS WITHSTAND SAND SLURRY TEST

TUNGSTEN CARBIDE BALL VALVE COMPONENTS WITHSTAND SAND SLURRY TEST

HOUSTON – Watson Grinding & Mfg. and Oil States Industries announce metal seated ball valve with tungsten carbide coating was unaffected by sand slurry test environment.

The 2-1/16” 5,000 psi 4130 alloy steel ball valve with tungsten carbide coated ball and seat components spent approximately 50 hours in service.

The API 6AV1 Class II test specification consists of 50hours flow with a sand slurry media flowing through the valve, then subsequently 500 open/closed cycles with sand slurry flowing through.  The acceptance criterion of zero leakage was met.  Test media was a water/sand mixture; with which the specification has strict requirements for sand particle size, sand content, and viscosity.  Test temperature was ambient, pressure was 5000psi maximum.

The purpose of the R&D was to study the amount of leakage.  This test was performed for no specific application; however, emergency shut-down valves (ESDVs) require this certification.

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Oil States Industries, Inc. is a subsidiary of Houston, TX based Oil States International, Inc.

About Oil States: Oil States International, Inc. is an energy services company with a leading market position as a manufacturer of products for deepwater production facilities and certain drilling equipment, as well as a provider of completion services and land drilling services to the oil and gas industry.  Oil States is publicly traded on the New York Stock Exchange under the symbol “OIS”.

For more information on the Company, please visit Oil States International’s website at http://www.oilstatesintl.com.

Watson Grinding & Mfg. is a full-scale machine shop offering a multitude of processes and solutions.  Watson specializes in the precise application of carbide and ceramic thermal spray coatings via High Velocity Oxygen Fuel (HVOF) and Plasma (APS) Thermal Spray applications. The addition of a robotic thermal spray facility and on-site ISO 17025:2005 metallurgical laboratory in recent years have made Watson Grinding a leader in the precise application of thermal spray coatings dramatically extending the service life of parts in highly corrosive or wear-intensive environments.   Strategic investments and technical innovations have consistently enhanced Watson’s capabilities and wide array of services.

For more information on the Company, visit www.watsongrinding.com.