| Product Line | Brakes |
| Category Name | Air Brake Valves |
| Part Type | Check Valve |
| Alternate Part Name | Twin Check Valve, Two-Way Check Valve, Dual Check Valve |
| Model | DC-4 |
| OEM Part Number | 289296 |
| Application Type | Semi-Trucks, Heavy Duty Trucks |
| Delivery Port 1 Size | 3/8-18 NPT (Female) |
| Delivery Port 2 Size | 1/4-18 NPT (Female) |
| Supply Port 1 Size | 3/8-18 NPT (Male) |
| Supply Port 2 Size | 3/8-18 NPT (Female) |
| Material | Die-cast Zinc |
| Maximum Operating Temperature | 200 deg. F (93 deg. C) |
| Minimum Operating Temperature | -40 deg. F (-40 deg. C) |
| Net Weight | 0.70 lb. |
| Cross References | 170289296, 20QE2199, 289296, 289296N, 745-289296N, 745289296N, 9340990050, BX289296N, EM40630, KN25080, KN25090, LCV-4063, LCV4063, RKN25090, S9340990050 |
| Intended Application | - Used in air brake systems and other pneumatic systems on heavy vehicles, allowing a single circuit to be supplied from two separate air sources. Its primary function is to direct compressed air from the highest pressure source, ensuring continuous flow and avoiding interruptions in critical systems.
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