Triple Eccentric Butterfly Valve
A triple-eccentric butterfly valve is a metal-seated butterfly valve with three geometric offsets that eliminate seat rubbing and give zero-leakage, high-temperature performance.
What is a Triple Eccentric Butterfly Valve
The three offsets let the disc cam onto a metal seat without sliding contact, so it seals tight at high temperature and holds fire-safe ratings. It replaces gate valves in many high-temperature isolation duties.
Materials & standards
- Metal seat (SS/STL) for zero leakage
- 316L / alloy body
- ANSI / DIN / JIS flange faces
- Fire-safe design
- High-temperature packing
Typical applications
- Steam and heat-transfer isolation
- High-temperature process; Power and boiler duty
- Fire-safe isolation; replaces gate valves
- General industrial on/off
Triple Eccentric Butterfly Valve at a glance
| Sealing | Zero-leakage, metal seat |
|---|---|
| Temperature | High-temperature rated |
| Relative cost | Higher than soft-seated |
| Best use | High-temp, leak-tight, fire-safe isolation |
Frequently asked questions
What makes it triple-eccentric?
Three geometric offsets that eliminate seat rubbing so the metal seat seals without friction wear.
Where is it used instead of a gate valve?
In high-temperature, leak-tight, fire-safe isolation where a gate valve is slow and prone to leakage.
Is it fire-safe?
Yes, metal-seated triple-eccentric designs are specified fire-safe for steam and hydrocarbon duty.
Last updated: 2026-10-08
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