In a process plant, the general function of a control valve is to restrict the opening of the valve so it affects the flow or pressure of the liquid or gas that is passing through it.

In any given application, an installed valve, has one fundamental variable – the position of the moving element, which could be a profiled ball, plug, or sleeve in the valve. That single moving element determines the exposed orifice that allows greater or lesser flow through the valve, which in turn provides the control of the process.

The valve itself may be extremely sophisticated with exotic body and seat material, or it may have complex flow patterns that allow for a high pressure drop or some other complex feature. However, the fundamental requirement to move the valve stem to position the control element remains the same regardless of whether it’s a simple or a sophisticated valve.

A control valve actuator is used to move the valve stem (which is attached to the internal control element) to the desired position and hold it in place. In addition to the act of moving and holding positions, there are many other parameters to that movement which determine the best type of actuator that should be used for every specific application. For example, other important considerations might include speed, repeatability, resolution, and stiffness.

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The above pictures feature Valtorc International’s: Ball Valves Series and  V-Port Ball Valves and 3-Way PVC Ball Valves

*** Important Update for December 2010 ***

Dec 1, 2010 – Effective as of 09/27/2010, H.R. 5297 (the Small Business Jobs and Credit Act of 2010) had a substantial (and welcome) impact on Section 179.  The biggest impact is that it increased Section 179’s limits (essentially doubling them). This means a substantial boost to your bottom line this year.  But to get the deduction for tax year 2010, you have to act now, as once the clock strikes midnight on 12/31/2010, Section 179 can’t affect your 2010 profits anymore.Additionally, a “$179 bonus per $10,000 financed” is being offered thru 12/31/2010.  This means you can get your equipment, vehicles, and/or software now (and thus get to take advantage of Section 179 in 2010), and get bonus cash as well.

Click here for details: Section 179 Qualified Financing.

For more information on Section179 and information on ARRA certificates please visit the following websites: – More information on Section 179 – ARRA information and tracking money

Click here to download Valtorc International’s ARRA certificate

Check out the demo our friends over at the ECO Group, LLC came up with below, a full packaged system ready to go.  Featuring various parts and the Valtorc series pneumatic actuators:

And then they have a nice video on YouTube covering the automation, view that below:

To view more, check out the ECO Group, LLC’s website by clicking here.

Please be sure to check out this months issue of Valve World magazine.  You can get a copy here:

Or, check out the preview below:

Here is some other news featured Valtorc International on Valve World Magazine:

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