The U.S. aircraft register, updated daily
Parts

Manual Valve

No failure report names the manual valve. 3 FAA approvals let 3 companies make a replacement manual valve, Airesearch Tucson Div holding the most (1).

Approved replacement parts 3 parts manufacturer approvals

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

For these models most: Boeing 747 (2), Bombardier CL-600 Challenger and CRJ (1).

MakerPartReplacesFitsGrantedStatus
Aero Fluid ProductsManual Valve 2416T100-160B97000-9The Boeing Company 747-200B Series, 747-200F Series,...2013-07-23current
Aerocontrolex Group, Transdigm INCManual Valve 2416T100-160B97000-9The Boeing Company 747-200B Series, 747-200F Series,...2011-06-29current
Airesearch Tucson DivManual Valve 131400-2Bombardier 131400-2Bombardier, Inc. CL-600-1A11 (CL600), CL-600-2A12...1992-04-15current

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.