Valves at Work in SCR Systems

TLX Technologies developed a coolant control valve to keep DEF (diesel exhaust fluid) within its optimal temperature range.

Customer Problem

A manufacturer of off-road logging vehicles needed a valve to control the flow of coolant in an SCR (selective catalyst reduction) thermal management system. The valve needed a flow rate of 0.5 L/s and compatibility with coolant system pressures as high as 500 kPa. Because logging vehicles operate in harsh environments, the valve needed to withstand conditions that included dirt, debris, vibration, and submersion in water.

The TLX Solution

TLX developed two versions of the valve to suit the varying environments that logging vehicles were likely to encounter. One had an IP65 rating, making it dust-tight and water-resistant; the other had an IP67 rating, making it dust-tight and fully submersible in water to one meter for up to 30 minutes. Due to the tendency for debris to contaminate the coolant, each version also included a custom diverter to route debris away from critical internal valve components.

View Design Solution

Coolant Control Valve

Operating range: 12-24 Vdc
Maximum flow rate: 0.5 L/s
Coolant temperature range: -40°C to 110°C (-40°F to 230°F)
Current draw: 2.5 A max
Response time: < 1 sec
Maximum pressure: 500 kPa

All TLX components are customized to fit system requirements, meaning technical specifications are unique to each customer and design. Examples given on our website are for illustration purposes only.

Working with TLX

Experienced partner of industry leaders, first-tier suppliers, and OEMs
Direct access to our design and engineering team
Localized production in USA and China
Dependable single-source solution from design to delivery

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Our Process

Step 1 / Initial Review

Our engineering team works directly with you to determine the viability of your program and identify the best solution based on your specifications.

Step 2 / Quote

Quotes include all costs related to your project - tooling, prototype, piece part, production and project specific costs.

Step 3 / Design Review & Prototypes

Our engineering team reviews the design with you and makes any adjustments needed. Prototypes are built according to design specifications for testing.