Duplex Steel Ball Valve, API 6D, A182 F51, 12 Inch, 1500 LB

Key Specifications / Features

We are a leading supplier of high-performance Duplex Stainless Steel Ball Valves, featuring metal-seated designs that meet the stringent requirements of API 6D. Our valves are constructed from durable ASTM A182 F51 material, offering excellent corrosion resistance and mechanical strength. Available in a 12-inch size (DN300) with a robust Class 1500 LB pressure rating (equivalent to PN250), they are equipped with RTJ flanged ends for secure and leak-tight connections.

The Metal-Seated Ball Valve employs a metal-to-metal sealing mechanism for both the ball and seat. Depending on service conditions and user requirements, various advanced ball and seat hardening technologies are used, including HVOF coating, nickel-base alloy spray welding, tungsten carbide alloy spray welding, and cobalt-base hard alloy spray welding. The sealing face material offers excellent heat resistance, typically ranging from 540°C to 600°C, with a maximum heat resistance of up to 980°C.
These materials also exhibit strong wear and impact resistance, ensuring durability under demanding conditions. The valve seat is made of stainless steel, with stellite alloy pile-up welding, while the ball is stainless steel, treated with hard chrome plating, vacuum coating, or tungsten-titanium alloy and stellite alloy welding to meet the required heat and wear resistance standards.
Our innovative ball manufacturing process achieves high-precision and super mirror surface processing, enhancing the valve's performance. A spring-preloaded seat design further ensures sealing reliability and stable operating torque, contributing to the valve's safety, sealing effectiveness, and ease of operation in various structural configurations.
 

Technical Specifications

» Size Range: NPS 2-36 Inch (DN50-DN900)
» Design Pressure: Class 150-900 LB (PN10-PN160)
» Materials:
   Carbon Steel, Stainless Steel, Duplex Steel, or Special Alloys (ASTM A105N, A350 LF2, A182 F304, F304L, F316, F316L, F51, etc.)
   Trim Materials: 13% Cr, SS 304, SS 304L, SS 316, SS 316L, and others
» End Connections: Flanged RF, RTJ, or Welded BW
» Operation: Manual handle, worm gear, electric, or pneumatic actuators
» Design and Manufacture: API 6D, BS 5351, ASME B16.34
» Face-to-Face Dimensions: ASME B16.10
» Flanged Connections: ASME B16.5, ASME B16.47
» Butt Welded Ends: ASME B16.25
» Fire Safety: API 607, API 6A
» Testing and Inspection: API 598, API 6D
» Temperature Range: -29°C to 300°C
» Medium: Suitable for water, gas, and oil

Product Features

» Advanced Ball and Seat Hardening Technology
» Flexible Valve Opening and Closing
» Fireproof Structure Design
» Double Block and Bleed (Metal Seated Trunnion Ball Valve)
» Reliable Sealing Performance
» Blow-out Proof Stem
» Corrosion Resistance and Sulfide Stress Resistance
» Optional Locking Device or Stem Extension
» Optional Direct Mounting to ISO 5211
» Full Port or Reduced Bore