Q61Y-4500LB Forged Steel Hard Seal Welded Ball Valve (DN20-DN100)
Q61Y-4500LB Forged Steel Hard Seal Welded Ball Valve (DN20-DN100)
Product Overview
Key Features
- Forged Steel Construction: The 3-piece bolted body is precision-forged from A105, F304, or F316 steel, eliminating casting defects and ensuring superior pressure integrity and impact resistance.
- Metal Hard Seal Technology: The ball and seat are overlaid with Stellite alloy, providing excellent resistance to high temperatures (up to 425°C / 800°F), wear, and particle erosion, significantly extending service life compared to soft-seal alternatives.
- Heavy-Duty Gear Operator: Equipped with a high-ratio worm gear mechanism to reduce operating torque, allowing for smooth and effortless manual operation even under high differential pressures.
- Anti-Blowout Stem Design: Features a high-pressure stem seal with multi-layer graphite packing to prevent external leakage and ensure safe operation under extreme conditions.
- Butt-Weld Ends (BW): Standard ASME B16.25 welding bevels allow for seamless integration into high-pressure piping systems, eliminating the risk of flange leakage.
- Full Bore Design: Unrestricted flow path minimizes pressure drop and turbulence, making it ideal for boiler main steam and high-pressure transfer lines.
Technical Specifications
| Parameter | Specification |
|---|---|
| Valve Type | Floating Ball, 3-Piece Forged Steel Ball Valve |
| Size Range | DN20 to DN100 (2" to 4") |
| Pressure Rating | ANSI 4500LB |
| Body Materials | A105 Forged Carbon Steel / F304 / F316 Forged Stainless Steel |
| Seat & Seal | Stellite Hard Alloy Overlay (Metal-to-Metal) |
| Temperature Range | -40°C to 425°C (-40°F to 800°F) |
| Connection Type | Butt Weld (BW) Ends |
| Operation | Manual Worm Gear (Pneumatic/Electric Actuators Available) |
| Applicable Media | High-Temp Steam, Boiler Feedwater, Oil & Gas, Chemical Fluids |
Applications
·Power Generation: Boiler main steam pipelines, high-pressure feedwater systems, and supercritical units.
·Petrochemical & Chemical: High-temperature and high-pressure synthesis gas, heat transfer oil, and corrosive media transfer lines.
·Oil & Gas: Ultra-high pressure extraction and gathering pipelines.
·Industrial Boilers: High-pressure steam isolation and control systems.
Customization & OEM Services
We offer comprehensive customization to meet your specific project requirements:
·Actuator integration (Pneumatic/Electric with explosion-proof options and feedback signals).
·Special alloy forged bodies (F304/F316) for corrosive environments.
·Extended stems and insulated jacket bodies.
·Full documentation package including API certification, material spectrometry reports, and English manuals for international projects.
Quality Assurance & Lead Time
Every Q61Y-4500LB valve undergoes rigorous hydrostatic strength, high-pressure gas tightness, and high-temperature cycle testing. Standard sizes (DN20-DN100) are readily available in stock for immediate dispatch. Customized or special material orders typically require a 5-10 day lead time. All products are backed by an 18-month warranty.
Contact Us for Technical Support
For detailed engineering support, sizing assistance, or a competitive quotation, please contact our sales team. We provide free technical consultation and complete documentation packages for domestic power plant projects and international export orders.