The Midland Haldex KN28071X is a relay valve designed for air brake systems on heavy-duty trucks and trailers. It features two 1/2-inch supply ports, two 1/2-inch delivery ports, and dual control ports sized at 1/4-inch and 1/8-inch. Crack pressure is rated at 4.0 plus or minus 1 PSI. A built-in anti-compounding two-way check valve handles spring brake control without requiring external components. The valve cover can be rotated to suit installation requirements. OEM cross-reference number is N30100AD. Bracket is not included. Call us to confirm proper fit for your application.
A refundable core charge of $50.40 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.
Features
Two 1/2-inch supply ports and two 1/2-inch delivery ports
Dual control port sizes: 1/4-inch and 1/8-inch
Crack pressure: 4.0 plus or minus 1 PSI
Built-in anti-compounding two-way check valve for spring brake control
Rotatable valve cover for flexible installation orientation
OEM cross-reference: N30100AD | Bracket not included
Tech Specs
- Supply (2): 1/2"
- Delivery (2): 1/2"
- Control (2): 1/4" and 1/8"
- Crack Pressure: 4.0 +/- 1 PSI
- OEM Part Number: N30100AD
- Core Group: 225
- Notes: Bracket not included
