5 Essential Tips for Selecting the Right Triple Eccentric Butterfly Valve
Choosing the right triple eccentric butterfly valve is crucial for ensuring leak-proof performance, durability, and efficiency in high-pressure applications. Whether you work in oil & gas, power plants, or chemical processing, these expert tips will help you make the best decision.
1. Understand Your Application Requirements
Before selecting a valve, consider:
✔ Fluid Type (water, steam, oil, corrosive chemicals)
✔ Pressure & Temperature Range (Class 150 to Class 2500)
✔ Flow Control Needs (On/Off or Throttling)
Example:
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For high-temperature steam, choose a metal-seated valve (SS316, Inconel).
-
For water treatment, an EPDM-seated valve may suffice.
STV Recommendation:
🔹 36″ Flange Butterfly Valve (DI Body, 95800 Disc, EPDM Seat)
✅ Ideal for water & wastewater
✅ Ductile Iron body for durability
✅ EPDM seat for tight sealing
2. Choose the Right Seat Material
The seat material determines sealing performance and longevity.
| Seat Material | Best For | Max Temp |
|---|---|---|
| EPDM | Water, mild chemicals | 120°C (248°F) |
| PTFE | Corrosive fluids | 200°C (392°F) |
| Stainless Steel | High-pressure steam, oil & gas | 600°C (1112°F) |
Tip: For fire-safe applications, choose metal-seated valves with graphite backup.
3. Check Valve Size & Pressure Class
✔ Size (2″ to 80″) – Match pipe diameter.
✔ Pressure Rating (ANSI Class 150 to 2500) – Ensure it handles system pressure.
Example:
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A 36″ valve is common in water distribution.
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Class 600+ valves are used in refineries.
STV’s 36″ Valve Specs:
📏 Size: 36″ (DN900)
⚡ Pressure: 150 LB (PN16)
🔧 Body Material: Ductile Iron
4. Consider Actuation (Manual vs. Automated)
✔ Manual (Lever/Gear) – For easy-access, low-frequency use.
✔ Pneumatic/Electric Actuators – For remote control & automation.
STV Offers:
🔹 Custom actuation solutions (including fail-safe options).
5. Verify Certifications & Quality Standards
Ensure the valve meets:
✔ API 609, ISO 9001, CE (for global compliance).
✔ Fire-safe testing (API 607/6FA) if needed.
Why Choose STV?
✅ API & ISO Certified Manufacturing
✅ Custom Designs Available
✅ Competitive Pricing & Fast Delivery
Final Recommendation
For water, wastewater, and general industrial use, STV’s 36″ Flange Butterfly Valve is an excellent choice.
📞 Contact STV for Expert Valve Selection Help!
🌐 www.stvvalves.com
✉ sales@stvvalves.com