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XSelector® Sizing Program
Use our online portal or our mobile apps to size products to help achieve optimum performance for your application.
COL Series
Product Type
Heat Exchanger
Solution
Hydraulic Oil Cooling
Application
Industrial Applications
Technology
Air Cooled, Brazed Aluminum
Off-Line Fluid Conditioning System — Air-Cooled Cooling & Filtration with Integral Pump
The Thermal Transfer Products COL Series is an air-cooled off-line fluid conditioning system that provides independent cooling and filtering of system oils. Built around reliable, high-performing screw pump technology, it runs as a self-contained loop — often called an off-line or “kidney loop” conditioning circuit — so it cools and filters the reservoir continuously without depending on the main system’s flow. That makes it ideal for large hydraulic reservoirs, lube systems, and gearboxes where consistent oil temperature and cleanliness are critical.
Each package integrates the pump, motor, air-cooled heat exchanger, and optional filtration on one unit. Choose the standard brazed aluminum P-BAR™ bar-and-plate core, or the optional T-BAR™ extruded-tube core for high-viscosity fluids to reduce pressure drop. Other options include cartridge-style in-line filters for contamination control and thermostat temperature sensors for automatic fan or system control.
The COL Series has a maximum operating pressure of 250 PSI and a maximum operating temperature of 300°F without a filter, or 230°F with a filter. TTP’s XSelector® sizing program — available online and as a mobile app — helps configure and size the right package for your reservoir volume, heat load, and filtration needs.
Consult catalog for additional sizes and technical information.
Product Features
- Ideal for independent cooling and filtering of system oils
- Low noise screw pump technology
- Bar and plate Brazed Aluminum P-BAR core
- Complete Motor/Pump/Filter all included in package
| Ratings | |
|---|---|
| Pump flows | From 9.5–45 GPM |
| Maximum Operating Pressure | 130 PSI |
| Maximum Operating Temperature | 200°F |
| Maximum Viscosity | 150 cst (Standard core) 320 cst (T-BAR core) |
| Configuration | |
|---|---|
| Complete Motor/Pump/Filter all included in package | |
| Fluid Compatibility | Petroleum Water/ethylene glycol Cutting oils Water-oil emulsions Water-Ethylene Glycol emulsions Mineral oil HLP and HLVP Ecologic fluids HETG-HEPG-HEE Lubrication high viscosity oils MIL-H, SKYDROL/HFDR phosphate ester (Standard pump seals are not compatible with phosphate ester. Special pumps with EPDM seals are required.) |
| Materials | |
|---|---|
| Mounting Feet | Steel |
| Standard Core | Aluminum |
| Fanguard and Shroud | Steel |
| Connectors | Aluminum |
| Fan | Aluminum Hub, Plastic Blades |
| Motor | NEMA |
| Product Options | |
|---|---|
| Cartridge-style filters | |
| Clogging filter indicators | |
| T-BAR core | |
| Temperature sensors |
- All catalog product is available with short lead-times
- Expert application engineers are available to select and size the right product for your application
- XSelector®* is a great tool for optimizing the sizing of TTP coolers. Check out the Apple and Android app stores to download the XSelector App
- Our distributor One Status portal allows for on demand quoting of coolers and looking up order status
- Custom designs are available
* To register for XSelector® please go to www.thermaltransfer.com/get-in-touch/ and complete the XSelector® Inquiry form and submit.
Download the XSelector® for both Apple and Android formats by searching for XSelector® in their App Stores. You must first register for XSelector® before using it on mobile devices.
Documents
Frequently Asked Questions
It’s an air-cooled off-line fluid conditioning system from Thermal Transfer Products — a self-contained package with its own screw pump that cools and filters hydraulic or lube oil independently of the main system.
The unit runs as a separate loop (sometimes called a kidney loop) drawing oil from the reservoir, cooling and filtering it, and returning it. Because it has its own pump, it conditions the oil continuously and independently of the main system’s operation.
It gives consistent, dedicated cooling and filtration regardless of main-system flow, protects large reservoirs and lube systems, and can run during warm-up or idle periods. It’s ideal where oil temperature and cleanliness must stay tightly controlled.
The standard brazed aluminum P-BAR™ bar-and-plate core, or the optional T-BAR™ extruded-tube core for high-viscosity fluids, which reduces pressure drop.
Cartridge-style in-line filters for contamination control and thermostat temperature sensors for automatic control.
Maximum operating pressure is 250 PSI, and maximum operating temperature is 300°F without a filter or 230°F with a filter.
Configure the COL Series
Talk to an engineer at TTP.
Finding the right thermal management solution shouldn’t be a guessing game. Whether you need a quick price quote, technical specs, or a fully custom engine cooling system designed from the ground up, our team is ready to help.
Fill out the form below, and one of our application engineers will reach out to ensure your equipment stays cool under pressure.