Archive of ‘Blog’ category

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!

Yeary Controls – 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!


The Williston Basin Petroleum Conference, organized by the North Dakota Petroleum Council will take place from May 22nd thru May 24th 2018 at the Bismarck Event Center in Bismarck,ND USA.  The conference will cover areas like energy supply and demand, to highly technical Bakken talks, to managing community impacts.

willison basin petroleum conference

Duncan’s New Space Saving Mounting kit for Jamesbury® HPBFV now available!

Duncan Company has developed a new Space Saving Mounting kit for the Jamesbury® High Performance Butterfly valves for sizes 2.5 thru 8 inch.  This new bracket is made of Stainless Steel that eliminates the 2pc coupler for a direct mount.  (On a 4″ valve, the difference in space is almost 4″ in height).

Jamesbury High Performance Butterfly Valve Mounting Kit

Duncan will be stocking these and for large projects we can get them within 7 working days, if needed.  There is a lot of Pros and almost no Cons moving to this mounting kit style.

Contact us today for more information at


1 2 3 12