Davis Machine & Fabricating Co., Inc.

120" Diameter Butterfly Valve Body for the National Water & Sewer Industry

120 in Diameter Butterfly Valve Body for the National Water & Sewer Industry
120" Diameter Butterfly Valve Body for the National Water & Sewer Industry

Davis Machine & Fabricating was contacted by a national water and sewer industry customer to construct a 120" diameter butterfly valve body to accurate dimensions. This challenging project required manufacturing systems able to process such a physically large and heavy design. Our facilities were flexible enough to overcome the challenges posed by this project.

Our primary applied procedures were CNC machining and boring. We used a 14’ Vertical CNC Boring Mill along with a 5-axis Horizontal Boring Mill with rotary table, capable of producing the 8,000 lb. design. Our material was ductile iron, machined within dimensional tolerances of ±0.002." We also applied a 2-part epoxy coating and finished open surfaces to 63 – 125 RMS.

Quality control checks, including dimensional inspection and visual inspection were employed during and at the end of the production process. Volumes of 1 to 5 units per order were each delivered to various locations on 3 to 5 week lead times.

This customer received a comprehensive fabrication solution that did not shy away from challenging design requirements. Davis Machine & Fabricating remains committed to bringing successful production to demanding projects without sacrificing quality or accuracy. Contact us today to learn more and see how you can benefit.

Highlights of a Butterfly Valve Body Fabrication

Capabilities Applied/Processes
CNC Machining
  • Boring
Coating/Painting – 2-Part Epoxy Paint
Equipment Used to Manufacture Part
14’ Vertical CNC Boring Mill and a 5-Axis Horizontal Boring Mill with Rotary Table
Overall Part Dimensions
Outside Diameter: 120"
Weight: 8,000 lbs.
Tightest Tolerances
± 0.002"
Material Used
Ductile Iron
Material Finish
63 - 125 RMS Surface Finish Required
In process testing/inspection performed
Dimensional Inspection, Visual Inspection, In-Process Dimensional Inspection
Industry for Use
Water and Sewer
1 - 5
Delivery/Turnaround Time
3 - 5 Weeks
Delivery Location
Municipalities Throughout the United States
Standards Met
Customer Specifications, 2D CAD Drawing
Product Name
120" Butterfly Valve Body