| Product Line | Brakes |
| Category Name | Air Brake Valves |
| Part Type | Dash Valve |
| Alternate Part Name | Dash Control Module / Manifold Dash Valve |
| Model | MV-3 |
| OEM Part Number | 800257 |
| Application Type | Heavy Duty Trucks, Semi-Trucks |
| Delivery Port 2.1 Size | 3/8 PTC |
| Delivery Port 2.2 Size | 3/8 PTC |
| Exhaust Port Size | 3/8 PTC |
| Mounting Hole Qty | 4 |
| Mounting Hole Size | Ø .275 in. |
| Supply Port 1.1 Size | 3/8 PTC |
| Supply Port 1.2 Size | 3/8 PTC |
| Material | Engineering Grade Composite (EGC) |
| Button(s) Included | Yes |
| Maximum Operating Temperature | 200 deg. F (93 deg. C) |
| Minimum Operating Temperature | -40 deg. F (-40 deg. C) |
| Tractor Trip Pressure | 30 ± 10 psi |
| Trailer Override Pressure | 25 ± 5 psi |
| Trailer Trip Pressure | 35 ± 10 psi |
| Net Weight | 1.50 lb. |
| Cross References | 170.800257WF, 2014785C93, 3592131C91, 745-800257, 745800257, 800257, 802620, 802620E, S-16929, S16929 |
| Intended Application | - Designed to efficiently manage the parking brake system on trucks and trailers with air brakes. Its main function is to control the air supply to the tractor and trailer parking brake system, allowing safer operation and reducing the number of pipes and valves required compared to traditional systems.
- Main functions:
- ? Tractor protection
- ? Trailer service brake control
- ? Parking system
- ? Trailer parking only
- ? Trailer recharging with spring brakes activated on the tractor
- ? Isolation of primary and secondary air tanks
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