Monel Check Valve for Float Zone Crystal Growers
Hand-operated monel alloy check valve preventing backflow in inert gas lines of float zone crystal growers for semiconductor material processing. Falls under HTS 8481.80.5090 as other hand-operated valves of materials neither steel nor plastic.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If electrically or pneumatically actuated
Non-hand-operated process valves classify under automatic control subheadings.
If for use as parts in testing apparatus like wafer probers
Parts of Chapter 90 testing equipment take precedence over general valve classification.
If primarily copper tubing with minimal valve function
Copper alloy tube/pipe fittings without full valve mechanism fall under Chapter 74.
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Import Tips & Compliance
• Certify monel composition (Ni-Cu alloy) with mill test reports to differentiate from steel classifications
Related Products under HTS 8481.80.50.90
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