Category: Blog

Kelair Inlet Vane Dampers available at Duncan Co

Inlet vane dampers are used for applications that require a reduction of expanded power and wear on heavy duty fans. Our inlet vanes pre-spin the air in the direction the fan blades are moving thus reducing energy consumption by the fan motors. Kelair’s unique central gearbox eliminates the damage prone external linkage of traditional inlet vane designs. Kelair offers dampers that are built specifically for each order and typically ship within 3-4 weeks depending on the actuator lead times.

We can help you with your application and provide a complete actuation package, contact us at 612-331-1776 or

Kelair Damper Valves for more information contact us at

Thermal Instruments new Flow Switch Model FS16

Thermal Instruments newest addition to their product line is the FS16 Flow Switch that will provide flow monitoring, multiple alarm set points, and a 4-20mA temperature output all in one instrument. The FS16 is very adaptable, as itis available for both liquid and gas applications, msall line sizes, to large piping applications. Excellent applications to apply the FS16 would be pump protection, valve monitoring, cooling water and heat exchangers.

For the complete article click here


Product integrity is one of the great benefits to use VCI Tank Blanketing. It also helps prevent internal tank corrosion by keeping oxygen out of your storage tanks.

VCI – Valve Components Inc – Duncan Company

VCI – Valve Components Inc safety products are now available at Duncan Co.

Products include Tank Safety Equipment: Tank Pressure & Vacuum Vents, Deflagration Arrestors, Detonation Arrestors, Emergency Vents, Gauge Hatches, Tank Blanketing Valves & Thermal Trip Valves.

VCI products, for more information contact us at Duncan Co

Click the above picture to download a brochure. For help with your applications, contact us!

Sharktooth Valves- Duncan Co

Duncan Company now represents Yeary Controls in Minnesota, North Dakota, Eastern South Dakota & Wisconsin. Yeary Controls specializes in the development, integration, and application of innovative valve technologies. Yeary has focused on valve solutions for the energy and process industries for over 40 years. They offer a range of control valves and accessories in sizes form 1/2″ up to 48″.

We can help you with your applications!

Yeary Controls/Sharktooth now available at Duncan Co.  For more information, please contact us at

Duncan & Arjay will be exhibiting at the 2019 SME MN Conference – Duluth, MN April 15-17

The 92nd Annual SME Minnesota Conference will be held at the Duluth Entertainment Convention Center, April 15-17, 2019. Duncan/Arjay will be exhibiting at Booth 85

The SME Minnesota Conference is the leading conference for regional collaboration and growth in the mining industry, specifically in the iron ore industry. Network with hundreds of your peers, gain exclusive access to the brightest minds in the mineral industry, participate in technical sessions, check out the latest products and most advanced solutions on the market.

For more information on how to register to attend, please visit:

Hy-lok offers High-Pressure Valves & Fittings rated to 60,000psi available at Duncan Company

Hy-Lok Needle Valve: Non-rotating Stem and bar stock body design options for Vee or Regulating stem tips

Ball Valve: One-piece, trunnion mounted style, ideal for severe duty application. 2-way, 3-way valve configurations.

Specifications: Max Operating Pressure: 60,000psi (4136 barg) @ 100F (30C)

Hy-lok High Pressure cone and thread fittings offer the capability to reach extreme high pressures (up to 60,000 PSI).

Cone and thread fittings are available in a Medium Pressure design, High Pressure design, and a Sour Gas option to meet your flow systems requirements.

Specifications: Complete range of elbows, tees and crosses available for all connection sizes

All sizes available up to 60,000 psi

Contact us at for more information

Arjay Automation, Div of Duncanco will be exhibiting at the MN Power Systems Conference – Nov 6, 2018

Arjay Automation, Division of Duncan Company will be exhibiting at the MN Power Systems Conference (MIPSYCON) on Tuesday, November 6th at RiverCentre – Hall A (175 W. Kellogg Blvd, St Paul, MN).  Event Hours are 4:30pm – 7:00pm.

Stop by to see what is new and how we can help solve your problems!