Globe Valve Basics and How They Function
2025-08-07
Introduction to Globe Valves
Globe valves are essential flow control devices designed for precise throttling and reliable shut-off in piping systems. At Hanno Valve, we engineer high-performance globe valves that meet the most demanding industrial requirements for steam, water, oil, and gas applications. This comprehensive guide explores their working principles, key features, and our specialized product offerings.
How Globe Valves Function
Operating Principle
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Flow Regulation: A movable disc (plug) adjusts against a stationary ring seat
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Direction Change: Fluid makes two 90° turns through the valve body
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Precise Control: Linear stem motion enables fine flow adjustment
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Positive Shut-off: Metal-to-metal or soft seating ensures zero leakage
Key Components
| Part | Function | Hanno Material Options |
|---|---|---|
| Body | Pressure containment | WCB, CF8M, Duplex |
| Bonnet | Stem sealing | Forged steel, stainless |
| Disc | Flow regulation | 13Cr, Stellite, PTFE |
| Seat | Sealing surface | 304SS, 316SS, 17-4PH |
| Stem | Motion transmission | 410SS, Monel, Inconel |
Hanno Valve Globe Valve Product Line
Technical Specifications
| Series | Size Range | Pressure Class | Temp Range | Flow Characteristic |
|---|---|---|---|---|
| HV-G100 | ½"-24" | 150#-2500# | -29°C~425°C | Equal percentage |
| HV-G200 | 2"-36" | 150#-900# | -196°C~650°C | Linear |
| HV-G300 | ¼"-12" | 800#-4500# | -50°C~1000°C | Quick opening |
Special Features
✔ Anti-cavitation trim (multi-stage pressure reduction)
✔ Bellows seal for zero-emission applications
✔ OS&Y design for visual stem position
✔ Fire-safe construction (API 607 certified)
Globe Valve Selection Guide
By Application
| Industry | Recommended Series | Special Requirements |
|---|---|---|
| Power Gen | HV-G300 | High pressure/temp |
| Oil & Gas | HV-G200 | Cryogenic service |
| Chemical | HV-G100 | Corrosion resistance |
| Marine | HV-G200 | Bronze bodies |
Performance Comparison
| Feature | Hanno Standard | Industry Average |
|---|---|---|
| Shut-off Class | ANSI VI | ANSI IV |
| Cycle Life | 100,000+ | 50,000 |
| Leak Rate | <0.01% | <0.1% |
| Repair Time | <2 hours | 4-8 hours |
FAQ: Globe Valve Fundamentals
Q: When should I choose a globe valve over other valve types?
A: Globe valves are ideal when you need:
| Requirement | Globe Valve | Alternative |
|---|---|---|
| Precise throttling | Excellent | Poor (gate valve) |
| Frequent operation | Good | Fair (ball valve) |
| High pressure drop | Acceptable | Avoid (butterfly) |
| Bubble-tight shutoff | Excellent | Good (plug valve) |
Hanno Valve recommends globe valves for:
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Steam systems requiring flow control
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Feedwater regulation in power plants
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Process control in chemical plants
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Fuel oil handling systems
Why Choose Hanno Globe Valves?
✔ Patented low-torque design reduces actuator costs
✔ Modular construction for easy maintenance
✔ Full range of end connections (flanged, SW, BW, threaded)
✔ Smart valve options with position feedback
✔ 30-year design life in standard services
Get Expert Valve Solutions Today
For technical specifications or application consulting:
📞 Tel: +86-18906880767
📧 E-mail: [email protected]
With over two decades in valve manufacturing, I personally guarantee Hanno globe valves deliver unmatched control precision and reliability. Contact our engineers for your flow control requirements!
