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For more than 60 years, we’ve provided control valve solutions to a wide variety of applications in the automation markets. We’ve designed our valves to handle all types of extreme conditions in diverse industries ranging from chemical, power generation, and industrial gas, to oil and gas, metals and minerals, and pulp and paper.  Furthermore, our products are manufactured to meet or exceed all industry standards and are backed by the highest level of commitment and customer-friendly service.


The chemical industry is fraught with difficult applications. Many applications involve corrosive media requiring exotic alloys, while other applications submit valves to extreme temperatures requiring even further design considerations.

The G100 Series products are designed specifically with these grueling conditions in mind. Bodies are available in most castable alloys, while trims can be provided in an even wider variety of materials. Whether you prefer the “quick change” trim of the G130, the all metallic construction (no soft body seals) of the G120, or one of our many application-specific designs, KOSO HAMMEL DAHL has a solution for you.

Industrial Gas

The separation and capture of high purity fractionated industrial gases is often accomplished through the use of cryogenic liquefaction and distillation of air. The air is super-cooled to temperatures in the -300°F to -450°F range. As the air temperature is reduced, the individual gases liquefy and are collected. The extreme temperatures and process control equipment required to achieve them require specific design considerations.

We’ve worked with large companies in the industrial gas segment for many years, which helped ensure our products were perfected specifically to meet their needs. As a result, we created the V817 Series, a premier control valve for cold box services. Our experience in the industrial gas industry further led to the application of the G100 Series products in other areas and technologies.

Power Generation

The demands of today’s power generation industry require proven reliability, yet still be an affordable solution. The most difficult applications involve high pressures, high temperatures, and nearly full-rated pressure drops. Most services require precise stable control to maintain the plant at peak efficiencies.

At KOSO HAMMEL DAHL, we’ve been solving the industry’s most difficult applications for decades. Our VeCTor™ Velocity Control Trim is time proven and has provided the power industry with final control solutions on applications ranging from boiler feedwater recirculation and bypass to steam turbine bypass.

Oil & Gas

The Oil & Gas industry presents control valve manufacturers with a wide array of challenging applications. Products must be designed to tackle the most severe conditions, ranging from high pressure, extreme temperatures, and erosion to velocity, cavitation, and noise.

Our products are uniquely designed to handle high-pressure encountered on compressor and booster pump stations. With our VeCTor™ Velocity Control Trim products, we take on some of the most difficult applications in the production, storage, and transportation of oil and natural gas. We have valve designs and years of experience serving cryogenic applications as low as -480ºF, which can be applied to handle compressed liquefied natural gas (LNG) services and other extremely low temperature fluid processes, which can be applied to handle compressed liquefied natural gas (LNG) services and other extremely low temperature fluid processes.

Metal & Minerals

In the metal and minerals industry, the combination of the erosive slurry, corrosive chemicals, and elevated temperatures and pressures present a difficult application for any valve. For example, the refining of bauxite into alumina (aluminum oxide) requires the use of lime and caustic soda. The bauxite is ground and mixed with chemicals then heated (400°F – 450°F) in digesters at pressures up to 500 psi.

The Series V701 has been successfully applied for decades in the metals and minerals industry. Designed to handle difficult services involving erosive fluids and slurries, its expanded body and Venturi seat ring construction minimizes erosion in even the toughest applications.

Pulp & Paper

The pulp and paper industry demands reliable control valves that can continuously handle corrosive and erosive liquids and abrasive slurries flowing under high pressure and high temperatures. Furthermore, valves in paper mills are often subject to other grueling conditions, including the splashing of pulp and alkalines, vibrations created by refiners and pumps, pressure shocks, crystallization and scaling, and impurities such as sand and metal wires.