Duplex Stainless Steel Butterfly Valve DN65 Price, Seawater Desalination Grade
Price Range
Currently, the price of a seawater desalination-grade duplex stainless steel butterfly valve DN65 generally ranges from $200 to $600 USD. The final cost depends on several key factors:
Material Grade: Grade 2205 duplex steel offers great value, typically priced between $200 and $400. Grade 2507 super duplex steel, which provides superior resistance to pitting and crevice corrosion, costs between $400 and $600.The main Butterfly Valve product names of China Butterfly Valve Network include:Flange Ceramic Hard-sealed Butterfly Valve,Three Eccentric Multi-level Metal Hard-sealed Wafer Butterfly Valve,Pneumatic Desulfurization Wafer Butterfly Valve,Electric Desulfurization Flange Butterfly Valve,Sanitary Butterfly Valve,High Temperature Butterfly Valve,Hydraulic Control Check Butterfly Valve,Quick-installed Sanitary Butterfly Valve.
Seal Material: PTFE or EPDM rubber seals affect both cost and temperature tolerance.
Brand & Certification: Well-known brands and valves with class society or marine approvals (e.g., ABS, DNV) are priced higher.
Order Quantity: Bulk purchases can significantly lower the unit price.
Selection Advice
Seawater has high chloride content, which can cause pitting and stress corrosion in standard stainless steels. For reliable long-term operation, 2205 or 2507 duplex stainless steel is highly recommended. Also verify the pressure rating (PN10-PN25) and connection type (wafer or lug) to ensure compatibility with your system design.
Important Notes
An unusually low price may indicate substandard materials or simplified manufacturing, leading to leakage and corrosion risks. Always request material test reports and proof of seawater service testing from suppliers to ensure the valve performs reliably in demanding desalination conditions.
Note: Prices above are market references. Please request a current quote for accurate pricing.
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