Full welded ball valve, all welded ball valve, big size ball valve,

B3 fully welded ball valves are widely used in oil, nature gas pipelines and the industries of liquefied gas, coal gas, etc. as open/close control valves. The fully welded body design has no bolted bonnet or body joints that can ensure no potential body joint leak for environmental concern. Also forged steel body assures uniform fine grain structure and toughness free from inevitable cast valves defects such as porosity, gas hole. The design of seat seal uses unique two-level soft seal and metal to metal seal to form triple sealing; the design of seat piston is accurately calculated to ensure seal reliability with small open/close torque and easy operation.

Design Standard:     API 6D, ASME B*6.*4, BS ***1, API **8, MSS SP**2
Face to Face:          ASME B*6.*0, API 6D, EN **8
End Connection:      ASME B*6.*5, ASME B*6.5, DIN ***1
Inspection and Test: API 6D, API **8

Size:                    2" ~ *4"(DN*0 ~ DN**0)
Rating:                 ANSI **0lb ~ ***0lb 
Body Materials:     Forged carbon steel, Forged Stainless Steel
Trim:                    A**5+ENP, *3Cr, F**4, F**6
Operation:            Lever, Gear, Electric, Pneumatic, Hydraulic         
Design Features

Full bore or reduced bore design
Forged body and ball, welded body
Double block & bleed
Trunnion mounted ball, Blowout-proof stem
Emergency sealant injection
Cavity pressure self relief
Fire safe design to API **7/API 6FA
Anti-static to BS***1