The U.S. aircraft register, updated daily
Parts

Seal Valve

No failure report names the seal valve. 5 FAA approvals let 3 companies make a replacement seal valve, Zevco INC holding the most (2).

Approved replacement parts 5 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a seal valve and sell it as an approved part for the models named. These are the companies holding such approvals for a seal valve:

For these models most: Dornier Luftfahrt Gmbh 328 (4), Dornier 328 (2).

MakerPartReplacesFitsGrantedStatus
Circor Aerospace, INC.Seal Valve Pax ZCV178ZCV178Dornier 328-100, 328-3002013-01-29current
Circor Aerospace, INC.Seal Valve ZCV177ZCV177Dornier 328-100, 328-3002013-01-29current
Jet Avion Corporation A Heico Aerospace CompanySeal-Valve (P05) JA1327M50P051327M50P05General Electric CF6-80C2, -80E Series Models2005-12-08current
Zevco INCSeal Valve Pax ZCV 178Dornier ZCV 178Dornier-Werke 328-1001994-10-31current
Zevco INCSeal Valve Crew ZCV 177Dornier ZCV 177Dornier-Werke 328-1001994-10-31current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.