Services & CapabilitiesMetal Stamping ServicesFour Slide Stamping ServicesPast ProjectsStamping of a Stainless Steel Flapper ValveFour Slide Wire Forming of Hard Drawn Wire RingMetal Stamped Steel Valve PlateFour Slide Stamping of a Brass Brush HolderFourslide Forming of a Steel Compression LimiterStamped Steel Bar Adjusting PinMetal Stamping of a Cord Terminal Assembly

Stamping of a Stainless Steel Flapper Valve for the Compressor Industry

At Excel Spring & Stamping we specialize in high volume custom metal stampings. The project highlighted here represents a production run of over 5,000,000 to date. This stamped component was designed for use as an intake valve on an air compressor. These valves were stamped from Sandvik 7C27Mo2, a hardened and tempered martensitic stainless steel, which is alloyed with molybdenum.

The finished valve measures .483" (±.003") wide and .0080"( ±.0004") thick. After the flapper valves were stamped, they were treated in our proprietary flapper valve finishing process. This finish gives the valve excellent fatigue strength, while maintaining the required flatness. Complete flatness of the flapper valve is critical to achieving compressor performance and service life. Finally, the parts were stacked on a custom fixture, and the stacks carefully packed in cartons. At Excel Spring & Stamping, we have become well-known in the compressor industry for our high quality flapper valve stamping and finishing. For more information about this custom metal stamping project, see the table below, or contact us directly.

  Stainless Steel Flapper Valve
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Stainless Steel Flapper Valve
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Stainless Steel Stamping Project Highlights

Product Name Flapper Valve UMC Intake
Product Description This stamped component is a flapper valve for an air compressor.
Capabilities Applied/Processes Primary:
Special Flapper Valve Finishing
Flatness Inspection
Special Packaging for Part Protection
Equipment Used to Manufacture Part 35 Ton Punch Press
Overall Part Dimensions Width: 0.483" ± 0.003
Thickness: 0.0080" ± 0.0004
Tightest Tolerances ± 0.0004"
Angular: ± 0.5°
Material Used Sandvik 7C27Mo2 Flapper Valve Steel (Strip Steel)
  • Hardened and Tempered Martensitic Stainless Steel Alloyed with Molybdenum
Material Finish
  • Special Flapper Valve Finishing
In process testing/inspection performed Dimensional Inspection - 100% Flatness
Edge Radius
Industry for Use Air Compressor
Volume Over 5,000,000 to date
Delivery Location Tennessee
Standards Met Customer Specifications, 2D CAD Drawing
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