API 6D Metal Seated Ball Valve, ASTM A105N, 8 * 6 IN, 150 LB

Product Name: API 6D Metal Seated Ball Valve
Design Standard: API 6D
Body Material: ASTM A105N
Size: 8 x 6 Inch, DN200 x DN150
Pressure: Class 150 LB, PN20
End Connection: RF Flanged
Operation: Gear Box

The ball and seat of the metal-seated ball valve utilize a metal-to-metal sealing mechanism. Depending on service conditions and user requirements, advanced hardening technologies can be applied to the ball and seat, including HVOF coating, nickel-based alloy spray welding, high-nickel alloy spray welding, tungsten carbide alloy spray welding, and cobalt-based hard alloy spray welding. These technologies enable the sealing face material to withstand temperatures ranging from 540°C to 980°C while offering excellent wear and impact resistance.
The seat is constructed from stainless steel with stellite alloy overlay welding, while the ball, also made of stainless steel, undergoes treatments such as hard chrome plating, vacuum coating, tungsten-titanium alloy, or stellite alloy overlay welding. These processes ensure superior heat and wear resistance. KOSEN’s innovative ball manufacturing process achieves high accuracy and an ultra-smooth mirror surface finish.
Another key feature is the spring-preloaded seat, ensuring reliable sealing and stable operating torque. The valve design emphasizes safety, sealing reliability, and operational flexibility.

Technical Specification

» Size Range: NPS 1/2–36 Inch (DN15–DN900)
» Temperature Range: -29°C to 300°C
» Pressure Range: Class 150-900 LB (PN10–PN160)
» Materials: 
  Cast Carbon Steel, Stainless Steel, Duplex Steel;
  ASTM A105N, A352 LF2, A182 F304, F304L, F316, F316L, F51, etc.
» Trim Materials: 13%Cr, SS 304, SS 304L, SS 316, SS 316L, and custom Options
» Mediums: Water, Gas, Oil, etc
» End Connections: Flanged (RF, RTJ), Welded
» Operation: Handle, Worm Gear, Electric, Pneumatic
» Design Standards: API 6D, BS 5351, ASME B16.34
» Face-to-Face: ASME B16.10
» Flanged Connection: ASME B16.5, ASME B16.47
» Butt Welded End: ASME B16.25
» Testing and Inspection: API 598, API 6D
» Fire Safety: API 607, API 6A

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