The Midland Haldex 286370X is an R-8 relay valve designed to control both spring brakes and service brakes in heavy-duty air brake systems. It features a 2-port delivery configuration with 1/2" delivery ports, supply ports at 3/4" (x2) and 1/4" (x1), a 1/4" control port, and 90° port rotation. Crack pressure is 3 PSI. A 1/8" balance port is located under the exhaust cover. Core group designation is 121RLV. Compatible repair kit: part number 287370K. A CoreFree option is available under part number 286370RX. Sold by Pro Gear and Transmission, call us to confirm proper fit for your application.
A refundable core charge of $28.00 applies to this item and will be collected at checkout. The core charge is refunded upon receipt of your returned core, subject to its condition; customer is responsible for return shipping. Call us at (877) 776-4600 for details.
A factory handling fee of $25.00 per unit is added at checkout.
Features
Controls both spring brakes and service brakes
2-port delivery with 1/2" delivery ports
Supply ports: 2 at 3/4", 1 at 1/4"; control port: 1/4"
90° port rotation; core group 121RLV
3 PSI crack pressure
1/8" balance port located under the exhaust cover
CoreFree option available as 286370RX; repair kit 287370K
Tech Specs
- Supply: 2 @ 3/4", 1 @ 1/4"
- Delivery: 2 @ 1/2"
- Control: 1/4"
- Port Rotation: 90°
- Core Group: 121RLV
- Crack Pressure: 3 PSI
- Dimensions (H x W x L): 5.38" x 6.5" x 6.5"
