Off-Road Exhaust Aftertreament | Parker Fluid Control Division

- Exhaust Aftertreatment

Ammonia Dosing

Custom engineered solution for solid urea based ammonia dosing systems.

Alternative to traditional liquid-based SCR systems
Normally closed direct-acting valves housed in a custom plastic body
Temperature, pressure, and ammonia sensing
IP67 water resistance coils
Helps improve NOx reduction efficiency at lower exhaust temperatures

DEF/AdBlue Valves

Diesel exhaust fluid control for marine vessels, mining, oil & gas, rail, and large scale stationary diesel generator sets.

Control DEF between multiple SCR system tanks with cartridge style 2-way normally open & normally closed solenoid valves
Provide air assist for DEF dosing with additional cartridge style 2-way normally closed air valve
Designed for use with remote & buffer tank SCR systems
DEF Control Valves are suitable for SCR systems in high horsepower diesel engine applications

High Horsepower DEF Control Manifold

Space-saving normally closed DEF control valves designed for packaging multiple units into a manifold solution.

Operating Voltage: 9-32V (for nominal 12 & 24 volt systems)
Variable PWM Control (voltage dependent)
Fluid Temperature Range: -10°C to 60°C
Ambient Temperature Range: -40°C to 85°C
Max. Operating Pressure Differential: 7 bar
Orifice Size: 2.0mm

Hydrocarbon Dosing (Air Assist)

Parker's patented Hydrocarbon Dosing System controls the dosing of diesel fuel into the exhaust upstream of the DOC to allow efficient regeneration of the DPF.

Eliminates the need for injector cooling lines while offering unmatched atomization for improved fuel evaporation
Reduces unwanted fuel coking at the nozzle by utilizing air purge sequencing
Valve control manifold can be mounted away from high-temperature and high-vibration exhaust areas to improve reliability
No moving parts, no electrical parts on the exhaust
Fewer components and ease of assembly help optimize system cost savings

Hydrocarbon Dosing (Airless)

Custom Hydrocarbon Dosing System for the transportation industry featuring airless injector, diesel dosing valve, and safety fuel shut-off valve.

No coolant lines required
Cracking type prevents carbon penetration
No electric connector to nozzle
No sealing surface to compromise the nozzle

SCR Coolant Control Valves

Remote mount amd integrated DEF tank heating control valves for a wide range of On-Road and Off-Road vehicles.

Flexible Coil Orientation allows easy installation in tight spaces
Error proof mounting prevents costly DEF (Diesel Exhaust Fluid) system problems caused by backwards installation
Debris resistant design retains valve performance when exposed to coolant contamination
Metallic yoke & coil over molding avoids cracking as a result of thermal expansion

Thermal Regeneration

Parker's active thermal regeneration solutions provide precise atomization and fuel delivery for burner system applications. They offer fully integrated, tested, and calibrated components resulting in smaller packaging envelopes, improved reliability, and lower installed costs.

The Air Atomization Module (AAM) manages the fuel, atomization air, and purge air that is sent to the burner.
The Fuel Delivery Module consists of a positive displacement gerotor style fuel pump and a safety shutoff valve. The pump has the ability to draw from a fuel tank or can be used as a booster pump in the engines return fuel circuit.
The Integrated Combustion Air Valve (CAV) controls the air flow provided to the burner. The air is generally provided by a Variable Geometry Turbocharger (VGT).