Stainless Steel Triple Offset Butterfly Valves Description
A stainless steel triple offset butterfly valve is a precision-engineered valve designed for critical applications requiring zero leakage, extreme corrosion resistance, and long-term durability.
Core Design: Combines three-dimensional offset geometry (radial, axial, and angular eccentricity) with stainless steel construction (e.g., SS304/SS316/904L).
Key Function: Ideal for bi-directional shutoff and throttling in pipelines handling aggressive media (acids, alkalis, seawater) or ultra-clean processes (pharmaceutical, food-grade).
Structural Innovations & Material Advantages
Unique 3D Offset Mechanism
|
Offset Type |
Function |
|---|---|
|
1st Offset |
Valve stem positioned behind the sealing face, eliminating sliding friction |
|
2nd Offset |
Stem axis offset from pipe centerline, reducing wear during operation |
|
3rd Offset |
Conical sealing surface ensures metal-to-metal contact without wear |
Premium Stainless Steel Materials
Body & Disc: ASTM A351 CF8M (SS316) / CF3M (SS316L), with optional electropolishing for hygienic applications.
Seat & Seal:
Metal Seats: Stellite 6 overlay for temperatures up to 600°C (1112°F).
Soft Seats: PTFE or PEEK for cryogenic (-196°C) or ultra-clean environments.
Corrosion Resistance: Passes ASTM G48 pitting resistance test (PREN ≥40 for seawater applications).
Stainless Steel Triple Offset Butterfly Valves specification
|
Application |
General |
|
Temperature of Media |
Normal Temperature |
|
Power |
Manual |
|
Media |
Water, acid, alkali, oil steam |
|
Structure |
BUTTERFLY |
|
Connection |
Flange Ends |
|
Body material |
Stainless Steel |
Stainless Steel Triple Offset Butterfly Valves
Why Choose Stainless Steel Triple Offset Valves?
1. Technical Superiority
- Zero Leakage: Exceeds API 598 and ISO 5208 standards, leakage rate ≤ 10 ppm.
- High Pressure/Temperature: Rated for Class 600 (PN100) and -196°C to +600°C.
- Low Maintenance: Self-adjusting seat design reduces downtime by 70% compared to gate valves.
2. Cost-Efficiency
- Lifecycle Savings: 5-year warranty with 100,000+ cycle durability, reducing replacement frequency.
- Energy Saving: Cv value 30% higher than conventional valves, cutting pump energy costs.
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