| Product Line | Brakes |
| Category Name | Air Brake Valves |
| Part Type | Check Valve |
| Alternate Part Name | Air One-Way Check Valve, Air Line Check Valve, One-Way Valve, Air Check Valve |
| Model | SC-1 |
| OEM Part Number | KN23040 |
| Application Type | Heavy Duty Trucks, Semi-Trucks |
| Body Type | Straight |
| Delivery Port Size | 3/4-14 NPT (Male) |
| Supply Port Size | 3/4-14 NPT (Female) |
| Material | Brass |
| Length | 2.31 in. |
| Maximum Operating Temperature | 250 deg. F (121 deg. C) |
| Minimum Operating Temperature | -40 deg. F (-40 deg. C) |
| Net Weight | 0.48 lb. |
| Cross References | 170.KN23040, 5396-KN23040, 5396KN23040, EM-40680, EM40680, EMDKN23040N, KN23040, LCV-4068, LCV4068, R955KN23040N, RKN23040, ZZKN23040 |
| Intended Application | - One-way check valve used in air brake systems to allow air flow in one direction and prevent flow in the opposite direction.
- Main applications:
- Air brake systems in commercial vehicles
- Separation of air circuits.
- Applications in air suspension systems
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