Fortpro is a trusted leader in the development and manufacturing of premium-quality truck parts designed to meet the demands of semi-trucks and heavy-duty trucks. Renowned for innovation, durability, and reliability, Fortpro products are engineered to enhance performance, safety, and efficiency across a wide range of trucking applications.
Whether you're seeking OEM replacement parts or upgrades, Fortpro provides a diverse selection of components backed by a global reputation for quality and innovation. Trust Fortpro for the parts you need to keep your vehicles on the road longer and stronger.
Basic Part Information5 attributes
| Product Line | Brakes |
|---|---|
| Category Name | Air Brake Valves |
| Part Type | Relay Valve |
| Alternate Part Name | Emergency Relay Trailer Valve |
| OEM Part Number | KN30400 |
Application/Fitment Attributes7 attributes
| Application Type | Semi-Trucks, Heavy Duty Trucks |
|---|---|
| Compatible Repair Kit Part Number | F224646 |
| Delivery Port Qty | 4 |
| Delivery Port Size | 3/8 in. NPT |
| Emergency Supply Port Size | 1/4-18 NPT |
| Service Port Size | 1/4-18 NPT |
| Supply Port Size | 3/4-14 NPT |
Dimensional/Physical Attributes1 attribute
| Material | Die-cast Aluminum |
|---|
Technical/Performance Attributes2 attributes
| Crack Pressure | 4.5 psi |
|---|---|
| Minimum Operating Temperature | -40 deg. F (-40 deg. C) |
Packaging / Logistics Attributes:1 attribute
| Net Weight | 2.84 lb. |
|---|
Intended Application
- Air Brake Systems: For trailers older than 121, converter platforms or exempt trailers.
- Automann: 170KN30400
- Haldex: KN30400, KN30400N
- Euclid: EMDKN30400N
- Freightliner: 4194297144
- International-Navistar: ZZKN30400
- Mack: 5396-KN30400
- Meritor: R955KN30400N
- PAI: EM-36100
