Archive of ‘Blog’ category

Jamesbury® High Performance Butterfly Valves in stock at Duncan Company

Jamesbury® Wafer-Sphere high-performance butterfly valves provide long-lasting tight shut-off capability, excellent flow characteristics, and long service life.  Available in a wide choice of materials for a broad range of applications.  API-607 (Fire-tite) & CE Marked versions available.

Duncan carries in stock many automation accessories available for quick shipment.

  • Soldo Limit Switch Boxes
  • ASCO Solenoid Valves
  • YTC Smart Positioner
Contact us today for help with your applications!


Habonim Cryogenic Ball Valve with ABZ Spring Return Electric Actuator

We recently had a customer come to us to help resolve a current problem they were having with a competitor’s valve and actuator, they were having failure on multiple valve systems.

This application was for Natural Gas at a power station and they needed a heavy duty Spring Return Electric actuator for this cryogenic application.  Since our initial shipment, we have sold over 200 of these units.

Do you have an application giving you problems?  If so, contact us at the Duncan Company and ask how we can help get you the right valve for your application!

Resilient Seated & High Performance Butterfly Valves available at Duncan Company

Duncan Company can help you with your Butterfly Valve needs from Resilient Seated Butterfly Valves to High Performance and anything in between such as Damper Valves or Sanitary Butterfly Valves we have it all.

Having trouble finding a valve in stock for quick delivery?  Contact us at Duncan Company and our inside technical staff can help solve your problems.

Quadbeam S20 Hygienic Suspended Solids Sensor can help Dairy Plants increase Yields & Efficiency!

Quadbeam Technologies S20 Hygienic Suspended Solids Sensor

Locating the exact point of transition between product and water or different products can be challenging with many plants relying solely on time and flow calculations.

A Quadbeam Sensor will quickly and accurately identify the interface time after time which could mean any or all of the following to your process:

  • Faster Change Times giving to reduced down time
  • Increased Yields
  • Decreased waste treatment
  • Decreased water consumption

With the use of a Quadbeam sensor you get to change at the actual point you want to, not a theoretical point.  Quadbeam’s four beam ration metric technology self compensates for change caused by contamination or sensor surface or aging of the instrument.

Contact us at Duncan Company for more information or help with your applications!


Application:  Gypsum Slurry at a Generating Station

For corrosive applications, both the choice of lining material and the method of lining are critical considerations.

PFA lining material is melt-processible, meaning that this lining material can be locked to the valve body and plug using cast-in dovetail recesses and machined grooves.  (PTFE cannot be locked in.)

  • PFA Temperature range is rate to 400°F
  • Chemical inertness
  • Excellent permeation resistance
  • Low coefficient of friction
  • Toughness
  • Flexibility

3-Way Mixing Electric Actuated Ball Valve with Sharpe/VSI available at Duncanco

1.5″ 3-way 150# Flanged Full Port Ball Valve with 120V Electric Actuator was built for a 3-way mixing application.  Our customer wanted control with reliability, the switches are for full open/closed signal.


  • Full Port Design, bodies rated to 600CWP
  • Valve designed for many applications involving diverting or mixing
  • Valve available in Threaded, Socket Weld & 150# Flanged
  • Traceability on Body & End piece castings (CMTR)
  • Control Module:  Direct Digital control input 4-20mA or 1-20VDC from controller
  • Housing:  Nema 4, watertight, corrosion-resistant, powder coated, rubust aluminum die cast
  • Position Indicator:  Mechanical dome type with visible red/yellow close/open indicator
  • Ambient Temp Range:  -31°F to 150°F
  • Certification and Approvals:  CE, NEMA4, NRTL, CSA File 226201

New Hayward TBH Series Ball Valve available at Duncanco

Typical Applications but not limited to, municipal water and water treatment, clean water technology, chemical transfer and processing, aquatic and animal life support systems, mining and mineral processing, metal plating/surface finishing, marine, pulp and paper, landfills/environmental infrastructure and other demanding applications.

Natural Gas Processing Solutions with Cascho Control Valves & Regulators

Model HP-1+6+S — most commonly applied to develop a constant differential pressure across a rotating shaft seal to provide proper sealing and lubricating conditions over varying pressure ranges.  *For gaseous and non-flashing, non-cavitating liquid services.

Ranger QCT  —  is a universal control valve that is applicable in most control valve applications, especially steam.  It provides longer life on difficult services where conventional ball or globe control valves have problems with body or trim wear.  It provides noise control for gaseous service, and cavitation and flashing control for liquid service.  It is able to withstand temporary distortions due to “thermal shock” without compromising continued control of the process.

Model 2296  —  is capable of handling air, gases, oils, water, oxygen, steam and many corrosive process fluids.  With optional construction it is suitable for cryogenic service.


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