Here is a rewritten and improved version of the provided content in English, with added details to make it more natural and comprehensive, exceeding 500 characters: --- **Product Specifications:** - **Model No.:** DN15 - DN500 - **Connection Type:** Flange, Thread, Weld, Clamp - **Nominal Pressure:** PN1.0 - 32.0MPa - **Structure:** Fixed Ball Valve - **Function:** Blow-down Valve - **Application:** Suitable for industrial and water treatment systems - **Remote Control Accessories:** Limit Switch Box, EP-Positioner, Solenoid Valve - **Air Accessories:** Air Filter Regulator (AFR) - **Trademark:** Neutral brand or customizable options available - **Specification:** DN15 - DN500 - **HS Code:** 8481804090 **Additional Features:** - **Material Options:** CF8, WCB, CF8M, CF3, CF3M - **Drive Mode:** Pneumatic - **Flow Channel:** Tee Type - **Valve Type:** Eccentric Hemisphere Valve - **Operating Temperature Range:** High, Low, and Normal - **Acting Type:** Double Acting or Single Acting - **Operation Accessories:** Pilot Air Valve, Quick Exhaust Valve - **Certifications:** CE, ATEX, TS, API, ISO 9001 - **Packaging:** Wooden Case - **Origin:** China **Technical Parameters:** - **Working Pressure (PN):** 1.6 MPa - **Body Material:** WCB, CF8/CF8M/CF3/CF3M available - **Ball Material:** Stainless Steel (SS) - **Stem Material:** Stainless Steel (SS) - **Core Material:** Stainless Steel (SS) - **Seal Material:** PTFE, RPTFE, PPL available - **Packing Material:** RPTFE, Flexible Graphite - **Port Size:** DN25 - DN300 - **Flange Standard:** DIN PN16 - **Standards:** DIN 2543-2545 / DIN 2501 - **Testing Standards:** DIN 3230 / EN 12266 - **Medium Compatibility:** Water, Oil, Steam, Liquefied Gas - **Temperature Range:** -40°C to 290°C - **Operation Type:** Pneumatic **Pneumatic Actuator Specifications:** - **Actuator Type:** Scotch Yoke, Rack & Pinion - **Acting Mode:** Double Acting, Spring Return (FO/FC), 3-Position Type - **Manual Override:** Optional - **Optional Accessories:** Limit Switch Box, EP-Positioner, Solenoid Valve, Pilot Air Valve, Quick Exhaust Valve, Air Filter Regulator (AFR), Silencer, etc. **Note:** For more detailed drawings and technical specifications, please contact us directly. ![Cast Steel Pneumatic Eccentric Hemisphere Ball Valve Q640F](http://i.bosscdn.com/uploads/e4/63/cc/d484c53a8794a9df17cfc8e54e.jpg) --- This version provides a clearer, more professional structure while maintaining all original information and adding context to enhance readability and authenticity.

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