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PAI · Air System
802631
In stock · ships from Knoxville
This is a pressure protection valve for heavy‑truck air systems.
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Other applications
Other applications
Aftermarket replacement for Mack pressure‑protection valve 25168267; direct cross‑reference to QE 20QE2326AP3. May also fit other trucks using a 85/67 psi protection valve, but only the Mack CH application is confirmed by an aftermarket supplier.
Part data verified against 3 catalog sources
Numbers this part supersedes or interchanges with. Showing 3 of 3.
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It isolates the primary air reservoir from the secondary circuit; if pressure in the secondary side drops below the valve’s closing set point (67 psi), the valve shuts to preserve air for braking. The valve opens at 85 psi to allow recharging once supply pressure returns. It is commonly replaced when the valve fails to hold pressure or leaks, and it is supplied with pre‑applied thread sealant on the ports.
Part Number: 802631
PRESS VALVE, MAK20QE2326AP3
Unit: ea
Vendor: PAI Industries
Dealer: KP Services Crossville
Compatibility, alternatives, and more
Parts commonly needed alongside air system
