CNC Machining of Stainless Steel Jacketed Adjustable Valve for the Polymer Industry

A polymer industry customer approached Precision Machine Company, Inc to CNC machine four stainless steel jacked adjustable valves. The client came to PMC because, off the shelf, the valves they chose would not work properly on their machinery. In order to make the stainless steel valves perfect for the customer we put them through a series of initial processes that included: CNC milling and turning, fabrication and TIG welding. The valves, which measured 5″ in diameter and 20″ in length, were then given a black oxide coating and hydrostatic tested. After inspection, the valves were sent to the client’s North Carolina location.

For more information about this project please see the details below. To learn about our other services please contact Precision Machine Company, Inc. today.

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CNC Machining of Stainless Steel Jacketed Adjustable Valve Project Highlights

Product Description
This stainless steel valve is a custom valve as off the shelf products would not work for our client.
Capabilities Applied/Processes
CNC Milling
CNC Turning
Welding: TIG
Hydrostatic Testing
Bench work
Secondary Operations:
Black Oxide Coating
Equipment Used to Manufacture Part
CNC Mill
CNC Lathe
Welding Equipment
Overall Part Dimensions
Length: 20"
Diameter: Ø5"
Tightest Tolerances
Material Used
Inner Body: 316 Stainless Steel
Outer Jacket: 304 Stainless Steel
Stem: 17-4PH Stainless Steel
Seat: Stellite
Packing: PTFE
Max Material Finish
In process testing/inspection performed
Hydrostatic Testing
Inspection Performed:
First Article
Estimated Part Weight
(Approximately) 45 pounds
Industry for Use
Delivery Location
North Carolina
Standards Met
Customer supplied specifications
Welding Per ASME Code B31.3
Product Name
1-1/2" Polymer Valve

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