Category: Blog

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


Forum-Accuseal Severe Service Metal Seated Valves now available at Duncan Company

Accuseal™ manufactures Severe Service metal-seated ball valves for a wide variety of tough applications in Power Plants, Refineries, Chemical Plants and Paper Mills.

Accuseal™ isolation valves are designed and manufactured to provide tight shutoff in high temperature, high pressure, erosive, corrosive, abrasive and high-cycle applications.

Available in 1/2in to 36in, 150# to 4500# Class, with unidirectional or bidirectional shutoff.  Optimized ball and seat geometry and Omni-lap 360 assure tight shutoff and maximize valve life.


International Cheese Tech Expo April 18 & 19 – Duncan will be there, Booth 648!

Duncan Company will be in Booth 648 at the International Cheese Tech Expo, Wisconsin Center, Milwaukee, WI.   If you are attending be sure to stop by and see what new products we have added to our offerings.  We will have Factory Reps from Asco, Fairchild & Yokogawa in our booth along with our salesmen, so we have plenty of experts to help answer all your questions!

Be sure to stop by and enter in a chance to win a Bluetooth Wireless Speaker!

2018 International Cheese Technology Exposition



Duncan Co can provide Sanitary Ball Valves for Breweries and Distilleries

sanitary valves for breweries and distilleries

Brewers and distillers obsess over cleanliness, and for good reason.  Sediment trapped in the tanks, pipes or valves can be a potential source for contamination.  Because of this, caustic cleaning is carried out regularly, usually followed by a steam cleaning for sterilization.

That is why stainless steel sanitary valves are your best choice, they can withstand the high temperatures and chemical attack and can be manufactured with smooth surfaces that leave no microbes to hide.

duncan sanitary valves  

Valves used in brewing are either threaded or use the tri-clover clamp design, which is preferred because it’s difficult to get sediment out of threads.

We can help you control your flow with manual or actuated valves.  Contact us today for more information on how we can help you!