DN65 Fluorine-Lined Anti-Corrosion Ball Valve Price, Dedicated for Strong Acids and Alkalis
Combining the structural integrity of carbon or stainless steel with the chemical inertness of advanced fluoropolymers, this valve delivers long service life and leak-free performance.The main Ball valve product names of China Ball valve Network include:Flange Fluorine-lined Ball Valve,Forged Brass Ball Valve (Butterfly Handle Type),Pneumatic Discharge Ash Ball Valve,Pneumatic Discharge Stuff Ball Valve,Pneumatic Fixed Ball Valve,Pneumatic Flange Ball Valve,Three-plate Socket Welded Ball Valve,Two-plate Brass Ball Valve,Inner Thread Two-plate Ball Valve,Two-plate Inner-thread Drawing Down Ball Valve.
Price Analysis for DN65 Fluorine-Lined Ball Valves
The market price for a DN65 fluorine-lined ball valve generally ranges between $120 and $450 USD per unit for standard manual configurations. However, pricing varies significantly based on several critical factors:
Lining Material Quality: Valves lined with standard FEP (F46) are typically more economical ($120 - $220 USD), suitable for temperatures up to 150°C. High-performance PFA-lined models ($250 - $450+ USD) cost more due to superior thermal tolerance (up to 200°C) and higher stress-crack resistance.
Body Housing Material: Cast steel (WCB) bodies offer a cost-effective baseline. Upgrading to stainless steel (CF8/304 or CF8M/316) for highly corrosive external environments will increase the base price by 30% to 50%.
Actuation and Controls: A standard manual handle or worm gear is included in the base price. Equipping the valve with a pneumatic or electric actuator, positioner, or limit switch box can increase the total assembly cost to $500 – $1,200+ USD.
Manufacturing & Testing Standards: Valves tested to international standards such as API 598 or EN 12266-1 with high-voltage spark testing (typically 15kV to 20kV) carry a premium due to strict quality assurance.
Key Features & Material Options for Strong Acids and Alkalis
The core strength of the DN65 lined ball valve lies in its dual-layer construction: a pressure-bearing outer metal shell and an inner protective lining that completely isolates the metal from the aggressive medium.
Fluoropolymer Lining Options
PTFE (Polytetrafluoroethylene): Outstanding chemical resistance against almost all chemicals. Ideal for static seals and heavy-duty lining applications up to 180°C.
FEP (Fluorinated Ethylene Propylene / F46): Offers low friction and exceptional anti-corrosion properties up to 150°C. It is the most common lining choice for strong acids like hydrochloric acid and sulfuric acid.
PFA (Perfluoroalkoxy): Melt-processability ensures a seam-free, uniform layer with minimal permeability. It retains mechanical strength at elevated temperatures (up to 200°C–260°C) and is preferred for ultra-pure or high-temperature corrosive fluids.
Technical Specifications Summary
Nominal Diameter: DN65 / 2.5 Inch (65 mm)
Pressure Rating: PN10, PN16, Class 150
Connection Type: Flanged (ANSI B16.5, DIN, or JIS standards)
Tightness Class: ISO 5208 Rate A / API 598 (Zero leakage / Bubble tight)
Applicable Media: Hydrochloric acid, concentrated nitric acid, hydrofluoric acid, aqua regia, sodium hydroxide, chlorine gas, and active organic solvents.
Technical Advantages in Corrosive Applications
1.Zero Metallic Contact: The fluid only touches the non-reactive fluoropolymer lining and the lined ball, preventing metallic contamination and structural failure.
2.Low Operating Torque: The low friction coefficient of PTFE/FEP linings ensures smooth rotation and easy automation with smaller actuators.
3.Integral Molding Technology: Advanced high-pressure injection molding locks the lining securely into the valve body's dovetail grooves, preventing lining collapse under vacuum conditions.
4.Reliable Stem Sealing: Multiple V-ring PTFE packing assemblies combined with Belleville spring loading ensure dynamic stem seal integrity.
Procurement & Selection Tips
To ensure you receive an accurate quote and a valve suited for your system, provide your supplier with the following details:
Medium Details: Chemical composition, concentration percentage, and presence of suspended solids.
Operating Conditions: Maximum working temperature, working pressure, and potential vacuum presence.
Flange Dimensions: Specify ASME B16.5, EN 1092-1, or GB/T standard to ensure proper bolt alignment.
Spark Test Verification: Ensure the factory performs non-destructive high-voltage spark testing on the lining before shipment to guarantee the absence of pinholes.
Do you still need to know or purchase the following ball valve products:
