2″-4500LB-BW Open Die Forged Globe Valve

Product Technical Data Sheet

Product Name: Open Die Forged Globe Valve – Pressure Seal Bonnet
Model / Size: 2″ – 4500LB – BW / Open Die Forged Body / Pressure Seal Bonnet

1. 일반적인

This product is a high‑pressure, open die forged globe valve with butt‑weld ends and a pressure seal bonnet (self-sealing) , designed for the most severe service conditions. The open die forging process ensures a homogeneous grain structure, eliminating porosity and providing superior mechanical properties compared to cast valves. The pressure seal bonnet utilizes internal pressure to enhance sealing, making it the standard choice for high‑temperature and high‑pressure applications. Suitable for critical applications in power generation (boiler feedwater, main steam), oil & gas (high‑pressure pipelines, wellheads), petrochemical, and nuclear power plants.

2. Basic Parameters

3. Design & Manufacturing Standards

4. Main Component Materials

Note: Open die forging provides superior grain flow and mechanical properties essential for 4500LB service. All wetted parts are 100% traceable with material test reports.

5. Dimensions & Weight (Approximate)

*Note: Dimensions and weight are approximate and subject to final engineering. Class 4500 valves require manufacturer-specific dimensional verification.*

6. Operating Data

7. 특징

1. Pressure Seal Bonnet (Self-Sealing)
   The pressure seal bonnet is the standard design for high-pressure, high-temperature globe valves (Class 1500 and above). As internal pressure increases, the sealing force between the bonnet and body increases proportionally, providing a leak‑tight seal under all operating conditions. This design eliminates the need for large bolted flanges, reducing weight and envelope size while improving high‑pressure integrity.
2. Open Die Forged Construction
   The valve body and bonnet are manufactured through open die forging, which refines the grain structure, eliminates internal defects, and provides superior strength and fatigue resistance essential for 4500LB service. This process ensures material integrity and full pressure containment reliability.
3. Class 4500 Pressure Rating
   Designed and tested to ASME B16.34 Class 4500, capable of withstanding pressures up to 75.6 MPa (10,960 psi) at ambient temperature. Suitable for ultra‑high‑pressure applications such as boiler feedwater isolation, main steam stop valves, and high‑pressure gas injection systems.
4. High‑Temperature Capability
   Available in F22 (2¼Cr-1Mo) and F91 (9Cr-1Mo-V) forged alloy steels for service up to 610°C (1130°F). Seating surfaces are hardfaced with Stellite 6 or 21 to maintain sealing integrity under thermal cycling and erosion.
5. Butt‑Weld Ends
   Butt‑weld connections (ASME B16.25) provide permanent, leak‑free joints essential for high‑pressure and high‑temperature systems. Eliminates potential flange leakage risks associated with gasketed connections.
6. Stellite Hardfaced Seating Surfaces
   Disc and seat ring are hardfaced with cobalt‑chromium alloy (Stellite), providing exceptional resistance to wear, erosion, and galling under high differential pressure and high‑velocity flow conditions.
7. Outside Screw & Yoke (OS&Y) Design
   Stem threads are located outside the pressure boundary, protecting them from media corrosion and allowing visual indication of valve position. Stem is non‑rotating with rising motion.
8. Backseat Facility
   Integral backseat allows packing replacement under full line pressure, enabling in‑line maintenance without system shutdown. In pressure seal designs, the backseat also serves as a secondary seal during bonnet removal.
9. Blow‑out Proof Stem
   Stem retention design prevents blowout under pressure, ensuring operator safety in high‑pressure environments.
10. Full Material Traceability
    All pressure‑containing parts are 100% traceable with certified material test reports (MTRs) per EN 10204 3.1, ensuring compliance with critical service requirements.
11. NACE MR0175 Compliance (Optional)
    Available with materials and heat treatment certified for sour gas service (H₂S) in accordance with NACE MR0175 / ISO 15156.

8. Optional Features & Upgrades

9. Ordering Information

Please confirm the following when placing an order:

1. Size & Pressure: 2″ – Class 4500;
2. 차체 및 보닛 소재: A105 (standard) / F22 (high temp) / F91 (ultra‑high temp) / F316L (corrosive);
3. 보닛 유형: Pressure Seal (self-sealing) – standard for Class 4500;
4. Trim Material: 13Cr / F304 / F316 / Stellite hardfaced;
5. End Connections: Butt‑Weld ends (ASME B16.25) – specify pipe schedule;
6. Face‑to‑Face Dimension: ASME B16.10;
7. 작업: Handwheel / Gear operator / Electric actuator (specify voltage and control);
8. NACE Compliance: Yes / No – specify MR0175 or MR0103;
9. 온도 범위: Operating temperature for material selection;
10. Testing Requirements: Hydrostatic / High‑pressure gas / NDE requirements;
11. Special Requirements: Bellows seal, special hardfacing, certification packages.

보증:

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