The U.S. aircraft register, updated daily
Parts

Sleeve Valve

No failure report names the sleeve valve. 3 FAA approvals let 2 companies make a replacement sleeve valve, Turbo Technologies LLC holding the most (2).

Approved replacement parts 3 parts manufacturer approvals

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

MakerPartReplacesFitsGrantedStatus
Turbo Technologies LLCSleeve – Valve, Speed Gov 542208TT542208Hamilton Sundstrand 54H60-91, 54H60-1172024-07-02current
Extex Engineered Products INCSleeve-Valve Speed Gov 542208TA542208Hamilton Sundstrand 54H60-91, 1172016-09-07current
Turbo Technologies LLCSLEEVE-VALVE SPEED GOV T542208542208Hamilton Standard Division 54H60-91, -1172005-03-13current

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.