Airframe & Powerplant B737 CHECK VALVE DEACTIVATOR Used to hold open check valve (M913-1 or 4663-8) during heat exchanger and plenum/diffuser assembly cleaning using C21003. Tool allows airplane to provide pneumatic air to run C21003 (as opposed to using a ground air source). TAGS: 21 OEM PN:: C21006-1 TOMX PN:: N/A TOOL TAG: SPL-2462 Related posts Fuel tank access tableTERMOHIGROMETER LOGGERCF34-10E ENGINE STAND ADAPTER KITPISTOLA DE CALOR BOSCHInterior Panel GageLock Aleron Actuator B757Vapor Barrier Caps and Plugs…SLIDE SAFETY SIGNOVERSPILL COLLECTION KITWeighing Scale – 100KG