The Midland Haldex PURest Air Dryer Assembly, part number DA34160 or N4253J (OEM), is a five-stage desiccant air dryer for heavy-duty air brake systems. The multi-treatment cartridge handles 34 SCFM flow capacity at a maximum working pressure of 150 psi, with a safety relief set at 175 psi and secondary pressure protection at 235 psi. Inlet air temperature range is -40°F to +175°F, and internal purge volume is 210 cu. in. The integrated turbo protection circuit introduces just a 2 psi pressure drop at 15 SCFM and 120 psi. A 95W heater element (12/24 volt) prevents freezing in cold operation. This unit mounts without a bracket; inlet port is positioned on the left. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
5-stage multi-treatment desiccant cartridge for thorough air system drying
34 SCFM flow capacity at 150 psi maximum working pressure
Safety relief pressure: 175 psi; secondary pressure protection: 235 psi
Integrated turbo protection with 2 psi pressure drop at 15 SCFM / 120 psi
95W heater element (12/24 volt) rated for -40°F to +175°F inlet air temperature
210 cu. in. internal purge volume; mounts without bracket, inlet port on left
Tech Specs
- Heater 12/24 Volt, 95W
- OEM Part Number N4253J
- Stages of Drying 5
- Internal Purge Volume 210 cu. in.
- Inlet Air Temperature -40°F to +175°F
- Maximum Working Pressure 150 psi
- Safety Relief Pressure 175 psi
- Secondary Pressure Protection 235 psi
- Flow Capacity 34 SCFM
- Integrated Turbo Protection Pressure Drop 2 psi @ 15 SCFM / 120 psi
- Mounting Without bracket; inlet port - left
