| Product Line | Brakes |
| Category Name | Air Brake Valves |
| Part Type | Pressure Protection Valve |
| Model | PR-4 |
| OEM Part Number | 20QE2326A |
| Application Type | Heavy Duty Trucks, Semi-Trucks |
| Delivery Port Qty | 2 |
| Delivery Port Size | 1/4-18 NPT |
| Supply Port Size | 1/4 -18 NPT |
| Material | Die-cast Zinc |
| Closing Pressure | 70 psi |
| Crack Pressure | 85 psi |
| Net Weight | 0.60 lb. |
| Cross References | 170.16100V, 17016100V, 20QE2326A, 32222, 918330, LPR-3712, LPR3712 |
| Intended Application | - Heavy duty truck air brake systems, especially on Mack vehicles and other commercial equipment that rely on pneumatic systems for safe and efficient operation.
- Key Functions:
- ?? Brake system protection
- ?? Compressed air distribution
- ?? Prevents leaks in auxiliary circuits
- ?? Maintains vehicle safety.
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