| Product Line | Brakes |
| Category Name | Air Brake Valves |
| Part Type | Pressure Proportioning Valve |
| Alternate Part Name | Relay Valve |
| Model | BP-R1 |
| OEM Part Number | 65146 |
| Application Type | Heavy Duty Trucks, Semi-Trucks |
| Compatible Repair Kit Part Number | F224639, 106932 |
| Control Port Size | 1/8-27 NPT |
| Delivery Port 1 Size | 1/2-14 NPT |
| Delivery Port 2 Size | 1/2-14 NPT |
| Delivery Port 3 Size | 3/8-18 NPT |
| Delivery Port 4 Size | 3/8-18 NPT |
| Exhaust Port Size | Dust Shield |
| Mounting Bracket Dimension | 0.40 in. x 0.96 in. Slot (x4) |
| Service Port Size | 1/4-18 NPT |
| Supply Port 1 Size | 1/2-14 NPT |
| Supply Port 2 Size | 1/2-14 NPT |
| Universal Mounting Bracket Included | Yes |
| Material | Metal Alloy |
| Valve Body Configuration | 2 SUP / 4 DEL (2H + 2V) |
| Crack Pressure | 5.5 psi |
| Maximum Operating Temperature | 200 deg. F (93 deg. C) |
| Minimum Operating Temperature | -40 deg. F (-40 deg. C) |
| Net Weight | 3.28 lb. |
| Cross References | 065146N, 170065146, 65146, 65146X, 745-065146, 745065146, BX65146N, EBN065146N, EM56880, LBP-5688, LBP5688, R955065146N |
| Intended Application | - Tractor trucks with air brake systems to optimize braking when the truck operates without an attached trailer (bobtail mode).
|
