574-256-5001 or 1-800-832-5653 Control Products for Shot Peening
and Blast Cleaning Processes
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 Products to control the media flow rate in shot peening and abrasive blast cleaning machines
Products for media flow control
MagnaValves Control the media flow rate of steel shot or grit with the MagnaValve (tm). These magnetic valves have no moving parts but work by applying a magnetic field to restrict the flow of steel media. Application of a control signal will control the flow of media for excellant process control. MagnaValves have been the industry accepted method of media flow control since 1978 and are used in aerospace, automotive, medical and many other industries. All MagnaValves are factory calibrated to your specified media and can be re-calibrated when required to meet annual Nadcap compiiance.
Flow Sensors

Measure the flow rate of both steel and non-ferrous media with our selection of media flow sensors. These sensors are ideal for less critical applications where extremely high accuracy is not required. Note: these sensores cannot be factory calibrated since their installation affects the signal response. Means to perform in-situ catch-weigh tests should be considered in advance.
Test Boxes Many times a MagnaValve or control is returned to EI and the evaluation is "No fault found" or "Customer misadjustment, no defects found". You can eliminate lost production time by performing a functional test in your maintenance facility. Note: additional equipment would be required to perform a catch-weigh media flow rate calibration. Contact or customer service department for assistance.
Almen Products

John Almen, an engineer at Buick Motor Division of General Motors designed a system of process control in 1942. His test gage, holder and strips were described in his U.S. Patent 2,350,440 and later adopted by SAE in J 442. These devices are now industry standards of process control and EI has the largest inventory of gages, holders and strips in the world supported by distributors in over 25 foreign countries.

Note: the #2 Almen gage must be used for pre-bow measurements of Almen strips. Other methods, such as laser beams etc, do not yield the same values as the #2 gage and do not meet the requirements of SAE J442, J443, AMS2430 etc and therefore are invalid and should be avoided.
Aircraft Paint Stripping Concern for the environment has led to the transition away from chemical paint stripping of aircraft to the use of abrasive media such as plastics and low density grains, wheat starch etc. EI has developed a special aluminum test coupon and aero-Almen gage for this process. Blasting at intensities high enough to cause 0.005" arc height of the test coupon should be avoided. To learn more about training for aircraft paint stripping download (pdf) chapter 5 of the US Airforce Manual on Paint Stripping.

 
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