Pressure Protection Valve (75 psig Open, 70 psig Closed) Inlet Port 1/4in-18 NPT Outlet Port 1/4in-18 NPT Mack Multiple Use Application
- Part number: 802649
- OE MFG: HALDEX COMMERCIAL VEHICLE SYSTEMS
- OEM Reference: 90554107
- Cross Reference: MACK : 19QE2109, 4333-790331C91, 5396-90554107, 5846-90054473, 5886-90554107, 7883-90554107; NAVISTAR : 790331C91; OTHER : 9005-54-107, 90554107, E-4324, F4HS2A435DA, S-C088 | PAI : 802649E
- Product Class: Air Valves & Kits
The PAI 802649 is a Haldex pressure protection valve listed for Mack multiple-use applications. Pressure protection valves are heavy duty diesel truck parts that regulate air-system flow by opening at a specified pressure and closing as pressure falls, preserving pressure in protected circuits. This valve is described with a 75 psig opening pressure, 70 psig closing pressure, and matching 1/4 in-18 NPT inlet and outlet ports, details that distinguish its configuration. Haldex Commercial Vehicle Systems identifies 90554107 as the OEM reference; Mack cross-references include 19QE2109 and 4333-790331C91.








