A triple offset butterfly valve combines three offsets between the disc, seat and shaft so the disc lifts clear of the seat before rotating. That allows a metal seat to give tight shutoff without rubbing, which is why the design has displaced gate valves in many isolation duties.
Refining, LNG, power and high-temperature process service use triple offset valves for isolation where a soft seat would fail. They are expensive, they are specified with care, and when a unit is revamped they come out as complete, documented assemblies.
We buy triple offset butterfly valves in any quantity — single items, mixed pallets or whole cribs, including valves that need repair and assemblies that are missing parts. We do not require a clean inventory before reviewing a list.
| Common patterns | Metal seated and laminated seat designs, Fire safe and API 607 tested patterns, Wafer, lugged and double flanged, High temperature and cryogenic variants |
|---|---|
| Typical service | Refining isolation, LNG and cryogenic, Power generation |
| What we look at | Size, class, body material, seat design, temperature rating, actuation and certification. Triple offset buyers ask for documentation, so tell us what exists. |
| What to keep | Keep the valve closed and protected, keep the actuator, and keep the test and material certificates with the valve. A triple offset valve with a damaged seat laminate is a workshop job, so protect it in transit. |
Patterns and variants
What turns up most often
Variants matter because they change the buyer pool. A standard pattern sells to a rebuilder or a plant with the same service; a specialised trim sells to a much smaller group but often at a higher price. If you are unsure which variant you have, the nameplate or the trim marking will usually say.
Before it leaves site
How to protect the value
Keep the valve closed and protected, keep the actuator, and keep the test and material certificates with the valve. A triple offset valve with a damaged seat laminate is a workshop job, so protect it in transit.
Where they come from
Industries and services
- Refining isolation
- LNG and cryogenic
- Power generation
Most of the surplus we see comes from plants that have replaced equipment for a reason that has nothing to do with the valve: a unit was re-rated, a line was re-piped, a control loop was upgraded or a project was re-scoped. The valve is simply the part that has to move.
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Read →Questions sellers ask
Do you buy triple offset valves without certificates?
Yes, but certification changes the price materially. Fire safe and material certificates are the first thing a rebuilder asks for.
What condition is acceptable?
Complete, undamaged and preferably stored closed. Seat laminate damage is the main thing that reduces value.
Are actuated triple offset valves purchased?
Yes. A complete assembly with a gearbox or actuator is the normal form for these valves.