48" ASME Class 300 Fully Welded Trunnion Mounted Ball Valve - Full Port Design
48" ASME Class 300 Fully Welded Trunnion Mounted Ball Valve - Full Port Design - Image 2
48" ASME Class 300 Fully Welded Trunnion Mounted Ball Valve - Full Port Design - Image 3

48″ ASME Class 300 Fully Welded Trunnion Mounted Ball Valve – Full Port Design

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Description

48″ ASME Class 300 Fully Welded Trunnion Mounted Ball Valve – Full Port Design
Description: 48-inch (1,219 mm) NPS fully welded trunnion mounted ball valve for ASME 300LB pressure class. Monolithic welded body construction with trunnion-supported ball mechanism. Equipped with pneumatic double-acting actuator.
Key Specifications:

  • Valve Type: Fully Welded Trunnion Mounted Ball Valve

  • Nominal Size: 48″ NPS

  • Pressure Rating: ASME 300LB

  • Design Standard: API 6D / ASME B16.34

  • End Connection: Butt Weld (ASME B16.25)

  • Sealing Direction: Bidirectional

  • Fire-Safe: API 6FA Standard (API 607 Optional)

  • Body Material: ASTM A105 Forged Carbon Steel

  • Ball Material: ASTM A182 F316/316L SS

  • Stem Material: ASTM A182 F316/316L SS (Blowout-Proof)

  • Trunnion Material: ASTM A182 F316/316L SS

  • Seat Material: 316 SS + Reinforced PTFE (RPTFE)

  • Leakage Class: API 6D Class VI Standard (ISO 5208 Class A Optional)

  • Temp Range: –29°C to +180°C (RPTFE dependent)

  • Anti-Static: API 6D Compliant

  • Actuator: Pneumatic Double-Acting

  • Air Supply: [Specify: e.g., 4–7 bar g]

  • Accessories: Positioner, Limit Switches, Solenoid Valve, Lock-Up Valve, Manual Override

  • Coating: Sa 2.5 Blast + FBE
    Performance Data:

  • Hydro Test: 75 bar (API 598)

  • Seal Test: 0 bub/min N₂ @6 bar (API 6D VI)

  • Fire Test: 30min@760°C (API 6FA)

  • Cycles: >1,000 (ISO 5208)
    Features:

  • Welded body eliminates flange leaks

  • Trunnion design reduces operating torque by 60-70% vs floating ball

  • Spring-energized RPTFE seats with metal secondary seal

  • 316L SS trim with <0.5 µm Ra surface finish

  • Bidirectional sealing independent of pressure
    Applications: Oil/gas transmission pipelines, compressor stations, power plant steam lines (≤180°C), LNG transfer, sour gas (NACE MR0103 compliant).
    Compliance: API 6D, ASME B16.34, PED 2014/68/EU Cat. IV, NACE MR0103, SIL 2/3 (w/actuator).
    Ordering Code: 48-TMV-300LB-A105-316RPTFE-DA

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