VINVAL Class 800 forged steel ball valve – structure and applications

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VINVAL Class 800 Ball Valve – Structure, Working Principle, and Industrial Applications

15/04/2026

🔷 Overview of VINVAL Class 800 Ball Valve

The VINVAL Class 800 ball valve is a forged steel high-pressure ball valve designed for demanding industrial applications such as:

Oil & gas industry
Steam systems
Chemical plants
High-pressure pipelines

👉 With a pressure rating of Class 800, this valve is widely used in systems requiring high safety and tight sealing performance.

⚙️ Structure of VINVAL Class 800 Ball Valve

The Class 800 ball valve consists of the following main components:

1. Body

Material: ASTM A105, F304, F316
Forged steel construction
High strength and pressure resistance

2. Ball

Precision machined
Highly polished surface
Ensures tight sealing when closed

3. Seat

PTFE / RPTFE / metal materials
Wear and heat resistant

4. Stem

Connects to handle or actuator
Anti-blowout design

5. Packing / Gasket

Graphite or PTFE
Prevents external leakage

🔧 Working principle

The Class 800 ball valve operates as follows:

The handle rotates 90°
The ball rotates with the stem
When the bore is aligned → full flow
When perpendicular → flow is blocked

👉 Advantages: fast operation, high sealing performance, low pressure drop.

🌟 Advantages of VINVAL Class 800 Ball Valve

✔️ High pressure resistance

Suitable for Class 800 and above
Safe operation in harsh conditions

✔️ Excellent sealing performance

Precision sealing design
Minimizes leakage risk

✔️ High durability

Forged steel construction
Resistant to deformation

✔️ Easy operation

90° quick opening/closing
Compatible with electric/pneumatic actuators

📊 Industrial applications

🔹 Oil & gas industry

Oil pipelines
Gas distribution systems

🔹 Chemical plants

Corrosive chemical handling
Industrial process lines

🔹 Steam systems

High-pressure steam lines
Boiler systems

🔹 Power plants

Auxiliary high-pressure systems

⚠️ Selection notes

Choose correct material (A105, F304, F316)
Verify pressure rating (Class 800)
Select proper seat material for temperature
Prefer API/ASME certified products

🏁 Conclusion

The VINVAL Class 800 ball valve is an ideal solution for:

High-pressure systems
High-temperature environments
Oil & gas and chemical industries

👉 Proper selection helps:

Improve system safety
Reduce leakage risks
Extend pipeline service life

📞 Contact Information

Phuc Minh Engineering Co., Ltd (PM-E) specializes in supplying VINVAL industrial valves, Class 800 ball valves, piping equipment, and fittings that meet international standards.

🌐 Website: pm-e.vn
📧 Email: info@pm-e.vn
📱 Hotline: +84 907 450 506 – +84 902 720 814 – +84 979 737 351

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