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Positive Choke Valves

A long-time standard for safety and reliability in the oilfield, Thornhill-Craver UNIBOLT Positive Chokes are designed for maximum performance under critical conditions.

Thornhill Craver UNIBOLT Positive Chokes are available for pressures up to 20,000 psi with either alloy steel or 12% chrome stainless steel body. They are provided with a ring-groove or taper type seal depending on size and pressure. Bean sizes can be specified from 1/64" to 2". Engineered for heavy duty, maintenance- free performance, the Thornhill Craver UNIBOLT Choke is commonly selected for a number of applications, including:

Well testing
Process facilities

The UNIBOLT coupling between the blanking plug and the body is a unique design feature that ensures superior reliability and safety over other methods. The connection is made by means of the UNIBOLT interlocking shelf design rather than by conventional threads or flanges.

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Cameron is a leading provider of flow equipment products, systems and services to worldwide oil, gas and process industries. Leveraging its global manufacturing, engineering and sales and service network, Cameron works with drilling contractors, oil & gas producers, pipeline operators, refiners and other process owners to control, direct, adjust, process, measure and compress pressures and flows.

Our Facilities

Engineered Equipment maintains three stocking warehouses convenient to major production areas.

EEI Warehouse
Casper, Wyoming

EEI Warehouse
Farmington, New Mexico

EEI Warehouse
Williston, North Dakota