Relay Valve R-12 (1) 3/4in-14 Supply Port (4) 1/2in-14 Delivery Ports (1) 1/4in-18 Service Port 3 psig Cracking Pressure Aluminum
- Part number: LRV-3590
- OE MFG: MACK
- OEM Reference: 20QE48
- Cross Reference: MACK : 20QE48, 5396-A86472, 750-11664; OTHER : A86472
- Product Class: Air Valves & Kits
The PAI LRV-3590 is an R-12 relay valve with one 3/4in-14 supply port, four 1/2in-14 delivery ports, and one 1/4in-18 service port. As heavy duty diesel truck parts, relay valves manage compressed-air flow in a pneumatic control system, directing supply air toward delivery circuits when the service signal is applied. This valve has a 3 psig cracking pressure and aluminum construction, useful details for matching the required configuration. MACK lists 20QE48 as the OEM reference, with 5396-A86472 and 750-11664 as additional cross-references.








