Description
MODEL 9 CHECK VALVE (3/4" NPT)
PART NUMBER(S):
Fleet Products: 107799-G3 | OE: 107799, BW107799, V1092448, R955107799N, S-E856 | Automann: 170.107799
DESCRIPTION:
Model: Model 9 / AD-9 Air Dryer Check Valve
Engines: Universal fit for air brake-equipped diesel engines
Vehicles: Freightliner, Volvo, Mack, Blue Bird, MCI Coaches
• Port Size: 3/4" NPT
• Direct-fit for AD-9 and Model 9 dryers
• One-way valve to prevent purge cycle backflow
• Mounting Style: Drop-in, fits old style AD-9 end covers
Applications: Used in AD-9 style air dryer systems for medium- and heavy-duty commercial trucks and buses. Prevents backflow from air tanks during purge cycles, preserving system pressure and protecting compressor integrity.
CROSS-REFERENCE(S):
107799, 107799-G3, BW107799, 060-107799, V1092448, 1092448, 170.107799, 745-107799, AV107799, G1012639, R955107799N, WA107799, TKL107799, LKT-1213, 1213, S-E856, SE856, BX107799, BEN107799, BAN107799, AT107799TEC, ZAC107799, ST-107799, PH-107799, FP-107799, PP-107799, PHD-107799, VIP-107799, AS-107799, TR-107799, SC-107799, TP-107799, FC-107799, HDA-107799, E-BN107799N, BER-107799, 107799BXW, GTA107799, GTA-107799, TLA107799, 8210884004, 4313557, BND107799, TWDBEN107799, 107799, KN20561, N30161AH, BNS107799, 107799, 107799BXW, 1092448, 4313557, 745-107799, 8210884004, 9515101339, AT107799TEC, AV107799, BAN107799, BEN107799, BND107799, BW 107799, BW107799, BX107799, G1012639, GTA-107799, GTA107799, 060-107799, R955107799N, S-E856, SE856, TLA107799, TWDBEN107799, V1092448, WA107799, ZAC107799
A cross-reference listing means this part can replace the listed numbers based on manufacturer or distributor data. Always verify dimensions and specs before purchase.
IMPORTANT INSTALLATION NOTES:
Only compatible with old-style AD-9 end covers — do not use with updated models
Always depressurize the system fully before removing or installing the check valve
Use thread sealant suitable for air brake systems on all NPT fittings
Confirm 3/4" NPT port size aligns with mating connection on dryer housing
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Warranty Information
