On-Road

Solutions for On-Road Trucks and Buses

From fuel systems to engine and mounting equipment to exhaust aftertreatment, Parker's Fluid Control division has the most demanding of applications covered.

Fuel Systems
Engine and Mounting Equipment
Exhaust Aftertreatment

Fuel Systems

Anti Surge Valve

Engine protection valve designed for quick release of redundant turbo air when engine speed is reduced.

Voltage Range: DC 24V +/-10%
Max. Operating Pressure Difference: 2.5 bar at the voltage range

Bi-Fuel Directional Control Valve (RTT)

3/2 way direct operated Solenoid valve for LNG fuel systems designed to provide flow diversion of diesel and/or natural gas. The unit prevents backflow when the valve is de-energized and leakage when the valve is energized.

Flow sequence: ON – OFF
Fluid Media: Natural gas, Diesel fuel, Bio fuel (max 7%)
Nominal Operating Voltage: 24V
Ambient Temperature: -30°C up to 120°C (operating and storage)
Vent Gas Temperature: -30°C up to 120°C

CNG Pressure Regulators

Used on-board CNG powered vehicles including medium and heavy-duty trucks, bus fleets, transit vehicles, delivery trucks, and a growing number of CNG applications. For additional information, click the Learn More link or download the Installation, Operation, and Maintenance Manual here.

All-inclusive design reduces installation time and results in fewer connections & leak points
Piston-style regulator with integrated heat exchanger and pressure relief valve offers enhanced performance
Integrated solenoid shut-off valve, coalescing filter, and optional pressure sensors for ease of assembly
Optimized to maintain stable pressures and high flow at low tank pressures
Extreme low-temperature seals ensure reliable operation in severe environmental conditions
CSA, ECE-R110, and INMETRO certified

Learn More

Fuel Cut-Off Valves

Safety shut-off valve for LNG fuel systems designed to stop fuel flow to the engine when ignition is switched off.

Alternative to traditional liquid-based SCR systems
Wide range of application
Suitable for LNG Trucks, Buses and Marine applications

High Pressure Safety Shut Off Valve

High-pressure, high-flow, two-way normally closed valves offer all stainless steel construction with optimum performance.

Bubble-tight maximum allowed leakage
ISO 15500/ECE R110 approval in process

LNG HPDI TSOV & Check Valve

Normally closed LNG HDPI Tank Shutoff and Check Valves.

Stainless steel bodied with NBR seals
Maximum operating Pressure Differential of 300 Kgf/cm2 (TSOV) and 350 Kgf/cm2 (Check)
Orifice Size: 5mm (TSOV) and 4.7mm (Check)

Low Pressure Safety Shut Off Valve

Offering exceptionally high flow, Parker's two-way, normally closed valve is specifically designed for low-pressure CNG applications.

Bubble-tight maximum allowed leakage
ECE R110 approved valve, 3/8" and 1/2" NPT available

LPG Tank Control Valves

Used on-board propane powered vehicles including school buses, transit vehicles, delivery trucks, and a growing number of propane autogas applications.

Individual tank mounted supply and return valves
Piloted piston valve designs with an excess flow valve and check valve for enhanced performance
On-engine fuel rail valving incorporates both supply and bleed solenoid valves
Meets UL125 performance requirements
LPG Control Valves are suitable for many clean transportation applications