Powell cryogenic valves use extended bonnets to keep the packing at a workable temperature, with materials selected for toughness at low temperature and seats designed to stay tight through thermal cycling. They appear across LNG, air separation and industrial gas installations.
A stored cryogenic valve is only as good as its storage. Moisture in an extended bonnet is the classic failure mode, and impact test certification is the classic documentation requirement.
Brand disclosure. Powell is a trademark of its respective owner. Louisiana Valve Buyer is an independent purchaser of surplus equipment and is not affiliated with, authorised by, sponsored by or endorsed by Powell or its owner. We do not provide manufacturer service, repair authorisation, calibration, pressure certification or product compatibility statements.
Inspection points
What decides the price
Impact testing
Charpy impact test certification is expected. If you have it, say so.
Bonnet condition
Look for water marks and corrosion inside the extended bonnet.
Seat and disc
Cryogenic seats are delicate. Photograph the seat area through the bore.
What to send
Making the review quick
A wide photograph of the whole unit, a close photograph of the valve nameplate, and the model number if you have it. If there are several identical units, one set of photographs and a quantity is enough.
If the equipment is already separated, keep the parts together and label them as a set. A matched pair is worth more than two orphans.
Questions sellers ask
Do you buy cryogenic valves that have been stored outdoors?
Sometimes, at a reduced price. Tell us how long and how they were protected.
Are Powell cryogenic valves still supported?
That is a manufacturer question, not ours. We buy the valve as surplus equipment and make no service claim.