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Koso Kent Introl Limited (KKI)
Koso Kent Introl Limited (KKI) is a specialist design and manufacturing company, producing surface and subsea control valves for severe service applications.

Based in Brighouse, West Yorkshire, UK, KKI valves, actuators and instruments are used across a wide range of global applications, including in the oil and gas, petrochemical, power and utilities industries. KKI products are used in almost every major oil and gas producing region around the world.

History
The company was originally formed in 1967 under the name Introl Ltd, by Edward Singleton, with the intention of offering improved designs for conventional control valves that would incorporate bespoke features to meet the needs of customers. The KKI philosophy is: ‘quality through design, production and customer service.’

Nihon KOSO Co. Ltd. of Japan purchased the company in 2005, from then-owners Vecto Gray and renamed the company Koso Kent Introl Limited in 2007. Previous owners have included George Kent Group (1971 – 1974, when the company traded as Kent Introl Ltd); Brown Boveri of Switzerland (1975 – 1985, when the company traded as BBC Kent Process Control Ltd, Introl Control Valves); ABB (1985 – 2000); Vetco Gray UK Ltd, an ABB Group company (2000 – 2005, when the company traded as Kent Introl, a Division of Vetco Gray UK Ltd.).

Portfolio
The company’s full range of products includes:


 * Single-seated globe valves
 * Double-seated globe valves
 * Three-way valves
 * Globe/angle cage-guided control valves
 * High performance rotary control valves
 * Surface choke valves
 * Subsea choke and control valves
 * Butterfly valves
 * Actuators and instruments
 * Trim options, including multi-spline trims and low noise trims

In addition to control and choke valves, other products manufactured include valve actuators, subsea systems, valve velocity control systems, valve anti-surge systems, instrumentation, factory automation systems, volume boosters, chemical pumps and production services.

Testing services
Valve testing (body hydrostatic testing; body gas testing; PR2 qualification testing (to API6A/ISO-10423/ISO-13628-4); fugitive emission testing (to ISO15848-1). Valve maintenance (emergency or scheduled, on or off location)

Manufacturing plants
KKI manufactures from its plant in Brighouse, West Yorkshire, UK, with global sales and application support from specialist sales teams complemented by selected channel partners throughout the world.

Currently KKI has three production sites in Brighouse, from which all design, manufacturing, testing and aftercare services are provided. Their newest site opened in 2011, covers an area of 18,000 square feet and houses the KKI Aftercare facility.

As of November 2011, KKI employed 146 people.

Famous visitors to the KKI’s Brighouse site include:

 * Prime Minister Sir Harold Wilson, who officially opened the Brighouse factory in 1976.
 * Prince Edward, The Duke of Kent who officially opened factory No.2 in 1982.
 * Michael Heseltine, then Secretary of State for Industry in Margaret Thatcher’s government, who visited the company in 1985.