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Bolted Bonnet Forged Bellows Seal Globe Valve – Velan

Product Details
Spec Detail
Size Range NPS 2 1/2 – 10 (DN 65 – 250)
Pressure Class ASME class 600 – 1500
Standard Connections Butt weld
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Premium Bolted Bonnet Forged Bellows Seal Globe Valve – Features & Benefits

As a trusted Velan Valve Supplier, Distributor, and Stockist, we provide high-performance Forged Bellows Seal Globe Valves engineered for extreme conditions. Designed for durability, safety, and efficiency, our valves are ideal for critical applications in oil & gas, petrochemical, and power plants.

Key Features & Benefits:

✔ Long Cycle Life Bellows (3000+ Cycles) – Constructed in Gr. 321 Stainless Steel or Inconel, rigorously tested for high-pressure & high-temperature (HPHT) conditions.

✔ Double-Layer Protection – Features a two-part bellows design for enhanced leak prevention and reliability.

✔ Secondary Stem Seals – Dual sealing system includes:

  • Backseat in open position

  • High-density graphite packing for superior stem sealing.

✔ Low Torque Operation – Optimized for smooth performance with:

  • Non-rotating stem (prevents bellows torsion)

  • Stem nut thrust bearings

  • Central lubrication system.

✔ Bellows Monitoring Port (Optional) – Allows connection to a plug for real-time bellows performance monitoring, ensuring early leak detection.

✔ Premium Forged Construction – Delivers higher toughness, strength, and fatigue resistance compared to cast alternatives, ensuring long-term safety.

✔ Guided Disc with Hardfaced Sealing – Seat & disc hardfaced with CoCr alloy, precision ground and lapped for a bubble-tight shut-off.

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