DOE FOR THE CUSTOMER Chris Vandegrift V.P. of Engineering Selas Heat Technology.

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Presentation transcript:

DOE FOR THE CUSTOMER Chris Vandegrift V.P. of Engineering Selas Heat Technology

4BZR Regulator December 2013 Objective:  Launch the 4BZR – ½” regulator  Conduct performance tests with various conditions: flow rate, pressure variation, washer weights, spring properties and diaphragms.  Meet or exceed the current standard for constant pressure output from the regulator

4BZR Before Summer 2013 ½” Balanced Zero Regulator Erratic performance on shut-off

“On-Target with minimum variance.” “Operating with minimum variance is achieved only when a process displays a reasonable degree of statistical control.” -Walter A. Shewhart Variation

Virtual Fishbone 5

Design of Experiments (DOE) Design of experiments is a branch of applied statistics that deals with… –Planning –Conducting –Analyzing –Interpreting …controlled tests to evaluate the factors that impact the output of the regulator.

4BZR DOE – Main Effects Main Nut Setting Seal Nut Setting Seal Washer Diameter

4BZR After DOE

4BZR Response Optimizer Optimal Settings

4BZR Component Recommendation Seal diaphragm bolt circle1.75” Steel retaining washer I.D.1.125” Steel retaining washer O.D.2.0” Steel retaining washer bolt circle1.5” Cork gasket I.D./O.D./B.C. Same as steel retaining washer Seal diaphragm bagging0.310” Seal washer I.D.0.203” Seal washer O.D.0.687” Paper seal gasket washer I.D.0.203” Paper seal gasket washer O.D. Lock washer type#10 “star” lock washer Main diaphragm bolt circle6.5” Main diaphragm pan diameter3.25” Seal diaphragm nut setting 0.649” below top of lower body Main diaphragm nut setting 0.068” above top of lower body Recommended Components Modified Assembly Tools

4BZR Test Rig Objective: To test Balanced Zero Regulators performance against quality standards. The ability to digitally record and display test data.

4BZR Marketing Claim Tests

Thank you!

Questions?