Unicima A105 Forged Steel Globe Valve Class 800 – Reliable Flow Control for High-Pressure Systems
07/03/2026The Unicima A105 Forged Steel Globe Valve Class 800 is designed for industrial piping systems requiring precise flow control under high pressure and temperature conditions. Manufactured from ASTM A105 forged carbon steel, the valve offers superior mechanical strength, reliable sealing performance, and long service life. Designed in accordance with API 602 and API 598 standards, the valve is widely used in steam systems, oil & gas pipelines, chemical processing plants, and power generation facilities.
1. Introduction
The Unicima A105 Forged Steel Globe Valve Class 800 is widely used in industrial piping systems that require precise flow regulation, high pressure resistance, and reliable sealing performance.
Manufactured according to API 602 standards, the valve body is made of ASTM A105 forged carbon steel, providing excellent mechanical strength and durability under demanding operating conditions.
With a plug-type disc and handwheel operation, the Unicima globe valve ensures accurate flow control while minimizing leakage and pressure loss within the system.
Typical applications include:
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Steam systems
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Oil & gas pipelines
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Chemical processing plants
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Power plants
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High-pressure industrial pipelines
2. Valve Construction
The Unicima forged steel globe valve consists of several precision-engineered components designed for durability and performance.
Main Components
Body
Material: ASTM A105 Forged Steel
Provides structural strength and pressure resistance.
Disc
Material: A276 Type 410 Stainless Steel
Designed for tight shut-off and efficient sealing.
Stem
Material: A276-410 Stainless Steel
Transmits motion from the handwheel to the valve disc.
Gasket
Material: SS304 + Graphite
Ensures tight sealing between the body and bonnet.
Gland Packing
Material: Flexible Graphite
Prevents leakage around the stem.
Bonnet
Material: A105 Carbon Steel
Connected to the body using high-strength bolts.
Handwheel
Material: Malleable Iron
Provides easy manual operation.
Additional components include:
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Bonnet bolts
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Gland bolts
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Gland flange
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Gland nut
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Yoke sleeve
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Sleeve washer
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Handwheel nut
3. Technical Specifications
Design Standards
| Item | Standard |
|---|---|
| Design | API 602 |
| Inspection & Testing | API 598 |
| Threaded End | ASME B1.20.1 |
| Pressure-Temperature | ASME B16.34 |
Pressure & Temperature
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Pressure Class: 800 LB
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Shell Test: 21 MPa
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Sealing Test: 15 MPa
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Air Leakage Test: 0.6 MPa
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Operating Temperature: -29°C to 425°C
Size Range : 3/8″ – 2″
Example dimensions:
| NPS | L (mm) | H (mm) | W (mm) |
|---|---|---|---|
| 3/8″ | 79 | 166 | 100 |
| 1/2″ | 79 | 166 | 100 |
| 3/4″ | 92 | 167 | 100 |
| 1″ | 111 | 196 | 120 |
| 1 1/2″ | 152 | 251 | 160 |
| 2″ | 172 | 290 | 180 |
4. Key Advantages
High Pressure Resistance
Forged steel construction ensures excellent strength in high-pressure applications.
Reliable Sealing Performance
Stainless steel seating surfaces combined with graphite sealing provide tight shut-off.
Long Service Life
High-quality materials improve corrosion and wear resistance.
Precise Flow Regulation
Globe valve design allows better throttling control compared to gate valves.
Easy Maintenance
Service-friendly construction simplifies maintenance and repairs.
5. Applications
The Unicima A105 globe valve is widely used in:
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Power plants
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Industrial steam systems
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Oil & gas facilities
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Petrochemical plants
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Refinery pipelines
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High-pressure piping systems
6. Conclusion
The Unicima A105 forged steel globe valve, Class 800, is an ideal solution for industrial systems requiring high durability, high-pressure resistance, and precise flow control.
Designed in accordance with API 602 standards and manufactured from high-quality materials, the valve ensures stable operating performance, long service life, and high operational safety.
